DeFi Rate midterm odds

2026 Midterm Election Odds Across Prediction Markets

Compare 45 live feeds covering control of Congress, House races, Senate races, governor contests and primary markets across Kalshi, Polymarket, Polymarket US, Gemini and OG. Use our US midterm hub to learn how and where to trade on the upcoming 2026 US elections.

Odds on Senate Balance of Power

Current probabilities across platforms with liquidity indicators

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Probability Over Time

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Outcome:
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U.S. House Control Odds: Democratic Party at 90.4%

LIVE
Updated 7 minutes ago · 7:48 AM PDT

Control of the U.S. House is one of the central national questions of the 2026 midterms. Democratic Party currently leads at 90.4%, ahead of Republican Party at 9.8%. DeFi Rate aggregates live pricing from Kalshi, Gemini Predictions, Polymarket US and OG and refreshes the board as district-level expectations change.

Largest Spread
3.05%
Republican Party → View arbs
Current Favorite
90.4%
Democratic Party +4.9%
30D Volume (Share)
K: — U: — G: — O: —
Momentum Leader
+4.9%
Democratic Party YTD change

Top prediction apps to trade on U.S. House control

Current U.S. House Control Odds

Current probabilities across platforms with liquidity indicators

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U.S. House Control Odds Over Time

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Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
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Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
RP
Republican Party
Kalshi Gemini
Buy @ K
9.8¢
Sell @ G
13¢
+3.20%
+3.05%
Yes
DP
Democratic Party
Gemini Polymarket US
Buy @ G
88¢
Sell @ U
89.8¢
+1.80%
+1.45%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
DP
Democratic Party
RP
Republican Party
Kalshi
A
90.4%
B
9.8%
+80.65%
Buy spread
DP
Democratic Party
RP
Republican Party
Polymarket US
A
89.9%
B
11.4%
+78.50%
Buy spread
DP
Democratic Party
RP
Republican Party
Gemini
A
87.5%
B
13.5%
+74.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

OG: Public OG contracts endpoint (Yes/No chance from contract data; no provider 24H volume field in this payload).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

U.S. Senate Control Odds: Democratic Party at 59.5%

LIVE
Updated 7 minutes ago · 7:48 AM PDT

Senate control remains a defining national question for the 2026 midterms. Democratic Party currently leads at 59.5%, ahead of Republican Party at 41.5%. DeFi Rate aggregates live pricing from Kalshi, Gemini Predictions, Polymarket US and OG as individual Senate races move.

Largest Spread
1.43%
Republican Party → View arbs
Current Favorite
59.5%
Democratic Party +11.0%
30D Volume (Share)
K: — U: — G: — O: —
Momentum Leader
+11.0%
Democratic Party YTD change

Top prediction apps to trade on U.S. Senate control

Current U.S. Senate Control Odds

Current probabilities across platforms with liquidity indicators

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U.S. Senate Control Odds Over Time

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Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
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Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
RP
Republican Party
Polymarket US Gemini
Buy @ U
41.4¢
Sell @ G
43¢
+1.60%
+1.43%
No
DP
Democratic Party
Gemini Polymarket US
Buy @ G
60¢
Sell @ U
59.8¢
-0.20%
-0.44%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
DP
Democratic Party
RP
Republican Party
Polymarket US
A
59.9%
B
41.4%
+18.50%
Buy spread
DP
Democratic Party
RP
Republican Party
Kalshi
A
59.5%
B
41.5%
+18.00%
Buy spread
DP
Democratic Party
RP
Republican Party
Gemini
A
59.5%
B
43.5%
+16.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

OG: Public OG contracts endpoint (Yes/No chance from contract data; no provider 24H volume field in this payload).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Republican House Seat Count Odds After the 2026 Midterms

LIVE
Updated 7 minutes ago · 7:48 AM PDT

This national board prices the number of House seats Republicans will hold after the 2026 midterms. Below 193 is currently the leading range at 31.5%, followed by 203-207 at 14.5%. DeFi Rate aggregates live Kalshi pricing across the complete seat-count distribution.

Largest Spread
0.00%
Current Favorite
31.5%
Below 193 +9.0%
30D Volume (Share)
$198.7K
K: 100.0%
Momentum Leader
+9.0%
Below 193 YTD change

Top prediction apps to trade on the 2026 House seat count

Republican House Seat Count Odds

Current probabilities across platforms with liquidity indicators

Sort:
B1
Below 193
Vol $53.9K Spread
Agg 31.5%
↑ +9.0%
K 31.5%
22
203-207
Vol $18.6K Spread
Agg 14.5%
↑ +1.0%
K 14.5%
12
198-202
Vol $12.0K Spread
Agg 13.5%
↓ -1.0%
K 13.5%
11
193-197
Vol $9.7K Spread
Agg 12.5%
↑ +1.0%
K 12.5%
22
208-212
Vol $9.9K Spread
Agg 12.5%
— +0.0%
K 12.5%
22
213-217
Vol $8.2K Spread
Agg 8.2%
↓ -1.6%
K 8.2%
22
218-222
Vol $23.9K Spread
Agg 2.5%
↓ -5.1%
K 2.5%
22
223-227
Vol $6.3K Spread
Agg 2.2%
↓ -2.7%
K 2.2%
A2
Above 237
Vol $15.1K Spread
Agg 1.6%
↓ -1.4%
K 1.6%
22
228-232
Vol $29.0K Spread
Agg 1.1%
↓ -1.5%
K 1.1%
22
233-237
Vol $12.1K Spread
Agg 1.0%
↓ -0.8%
K 1.0%
Outcome Aggregated Spread Volume Kalshi
B1
Below 193
31.5%
↑ +9.0%
$53.9K
Kalshi 31.5%
31–32¢ Vol $53.9K
22
203-207
14.5%
↑ +1.0%
$18.6K
Kalshi 14.5%
14–15¢ Vol $18.6K
12
198-202
13.5%
↓ -1.0%
$12.0K
Kalshi 13.5%
13–14¢ Vol $12.0K
11
193-197
12.5%
↑ +1.0%
$9.7K
Kalshi 12.5%
12–13¢ Vol $9.7K
22
208-212
12.5%
— +0.0%
$9.9K
Kalshi 12.5%
12–13¢ Vol $9.9K
22
213-217
8.2%
↓ -1.6%
$8.2K
Kalshi 8.2%
8.1–8.2¢ Vol $8.2K
22
218-222
2.5%
↓ -5.1%
$23.9K
Kalshi 2.5%
2.1–2.8¢ Vol $23.9K
22
223-227
2.2%
↓ -2.7%
$6.3K
Kalshi 2.2%
2–2.4¢ Vol $6.3K
A2
Above 237
1.6%
↓ -1.4%
$15.1K
Kalshi 1.6%
1.1–2¢ Vol $15.1K
22
228-232
1.1%
↓ -1.5%
$29.0K
Kalshi 1.1%
1–1.1¢ Vol $29.0K
22
233-237
1.0%
↓ -0.8%
$12.1K
Kalshi 1.0%
0.8–1.2¢ Vol $12.1K

Republican House Seat Count Probabilities Over Time

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Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

No cross-venue pairs available for this event.

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
B1
Below 193
22
228-232
Kalshi
A
31.5%
B
1.1%
+30.45%
Buy spread
B1
Below 193
A2
Above 237
Kalshi
A
31.5%
B
1.6%
+29.95%
Buy spread
B1
Below 193
22
223-227
Kalshi
A
31.5%
B
2.2%
+29.30%
Buy spread
B1
Below 193
22
218-222
Kalshi
A
31.5%
B
2.5%
+29.05%
Buy spread
B1
Below 193
22
213-217
Kalshi
A
31.5%
B
8.2%
+23.35%
Buy spread
B1
Below 193
11
193-197
Kalshi
A
31.5%
B
12.5%
+19.00%
Buy spread
B1
Below 193
22
208-212
Kalshi
A
31.5%
B
12.5%
+19.00%
Buy spread
B1
Below 193
12
198-202
Kalshi
A
31.5%
B
13.5%
+18.00%
Buy spread
B1
Below 193
22
203-207
Kalshi
A
31.5%
B
14.5%
+17.00%
Buy spread
22
203-207
22
228-232
Kalshi
A
14.5%
B
1.1%
+13.45%
Buy spread
22
203-207
A2
Above 237
Kalshi
A
14.5%
B
1.6%
+12.95%
Buy spread
12
198-202
22
228-232
Kalshi
A
13.5%
B
1.1%
+12.45%
Buy spread
22
203-207
22
223-227
Kalshi
A
14.5%
B
2.2%
+12.30%
Buy spread
22
203-207
22
218-222
Kalshi
A
14.5%
B
2.5%
+12.05%
Buy spread
12
198-202
A2
Above 237
Kalshi
A
13.5%
B
1.6%
+11.95%
Buy spread
11
193-197
22
228-232
Kalshi
A
12.5%
B
1.1%
+11.45%
Buy spread
22
208-212
22
228-232
Kalshi
A
12.5%
B
1.1%
+11.45%
Buy spread
12
198-202
22
223-227
Kalshi
A
13.5%
B
2.2%
+11.30%
Buy spread
12
198-202
22
218-222
Kalshi
A
13.5%
B
2.5%
+11.05%
Buy spread
11
193-197
A2
Above 237
Kalshi
A
12.5%
B
1.6%
+10.95%
Buy spread
22
208-212
A2
Above 237
Kalshi
A
12.5%
B
1.6%
+10.95%
Buy spread
11
193-197
22
223-227
Kalshi
A
12.5%
B
2.2%
+10.30%
Buy spread
22
208-212
22
223-227
Kalshi
A
12.5%
B
2.2%
+10.30%
Buy spread
11
193-197
22
218-222
Kalshi
A
12.5%
B
2.5%
+10.05%
Buy spread
22
208-212
22
218-222
Kalshi
A
12.5%
B
2.5%
+10.05%
Buy spread
22
213-217
22
228-232
Kalshi
A
8.2%
B
1.1%
+7.10%
Buy spread
22
213-217
A2
Above 237
Kalshi
A
8.2%
B
1.6%
+6.60%
Buy spread
22
203-207
22
213-217
Kalshi
A
14.5%
B
8.2%
+6.35%
Buy spread
22
213-217
22
223-227
Kalshi
A
8.2%
B
2.2%
+5.95%
Buy spread
22
213-217
22
218-222
Kalshi
A
8.2%
B
2.5%
+5.70%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Democratic Senate Seat Count Odds After the 2026 Midterms

LIVE
Updated 7 minutes ago · 7:48 AM PDT

This national board prices the number of Senate seats Democrats will hold after the 2026 midterms. Above 52 is currently the leading outcome at 35.5%, followed by 51 at 15.5%. DeFi Rate aggregates live pricing from Kalshi and OG across the full seat-count distribution.

Largest Spread
6.15%
Below 45
Current Favorite
35.5%
Above 52 +15.0%
30D Volume (Share)
$243.7K
K: 100.0%
Momentum Leader
+15.0%
Above 52 YTD change

Top prediction apps to trade on the 2026 Senate seat count

Democratic Senate Seat Count Odds

Current probabilities across platforms with liquidity indicators

Sort:
A5
Above 52
Vol $89.0K Spread
Agg 35.5%
↑ +15.0%
K 35.5%
51
51
Vol $15.8K Spread 5.5%
Agg 15.5%
— +0.0%
O 21.0%
K 15.5%
50
50
Vol $11.4K Spread 5.5%
Agg 13.5%
↓ -1.0%
O 19.0%
K 13.5%
52
52
Vol $41.3K Spread 5.5%
Agg 13.5%
↑ +1.0%
O 19.0%
K 13.5%
49
49
Vol $4.4K Spread 5.8%
Agg 9.2%
↓ -3.3%
O 15.0%
K 9.2%
48
48
Vol $11.1K Spread 5.9%
Agg 7.1%
↓ -3.4%
O 13.0%
K 7.1%
47
47
Vol $18.3K Spread 6.1%
Agg 4.0%
↓ -4.7%
O 10.0%
K 4.0%
B4
Below 45
Vol $26.2K Spread 6.2%
Agg 3.9%
↓ -4.1%
O 10.0%
K 3.9%
46
46
Vol $14.5K Spread 5.9%
Agg 2.2%
↓ -1.6%
O 8.0%
K 2.2%
45
45
Vol $11.8K Spread 5.2%
Agg 1.8%
↑ +0.3%
O 7.0%
K 1.8%

Democratic Senate Seat Count Probabilities Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

No cross-venue pairs available for this event.

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
A5
Above 52
45
45
Kalshi
A
35.5%
B
1.8%
+33.65%
Buy spread
A5
Above 52
46
46
Kalshi
A
35.5%
B
2.2%
+33.35%
Buy spread
A5
Above 52
B4
Below 45
Kalshi
A
35.5%
B
3.9%
+31.65%
Buy spread
A5
Above 52
47
47
Kalshi
A
35.5%
B
4.0%
+31.55%
Buy spread
A5
Above 52
48
48
Kalshi
A
35.5%
B
7.1%
+28.35%
Buy spread
A5
Above 52
49
49
Kalshi
A
35.5%
B
9.2%
+26.30%
Buy spread
A5
Above 52
50
50
Kalshi
A
35.5%
B
13.5%
+22.00%
Buy spread
A5
Above 52
52
52
Kalshi
A
35.5%
B
13.5%
+22.00%
Buy spread
A5
Above 52
51
51
Kalshi
A
35.5%
B
15.5%
+20.00%
Buy spread
51
51
45
45
Kalshi
A
15.5%
B
1.8%
+13.65%
Buy spread
51
51
46
46
Kalshi
A
15.5%
B
2.2%
+13.35%
Buy spread
50
50
45
45
Kalshi
A
13.5%
B
1.8%
+11.65%
Buy spread
52
52
45
45
Kalshi
A
13.5%
B
1.8%
+11.65%
Buy spread
51
51
B4
Below 45
Kalshi
A
15.5%
B
3.9%
+11.65%
Buy spread
51
51
47
47
Kalshi
A
15.5%
B
4.0%
+11.55%
Buy spread
50
50
46
46
Kalshi
A
13.5%
B
2.2%
+11.35%
Buy spread
52
52
46
46
Kalshi
A
13.5%
B
2.2%
+11.35%
Buy spread
50
50
B4
Below 45
Kalshi
A
13.5%
B
3.9%
+9.65%
Buy spread
52
52
B4
Below 45
Kalshi
A
13.5%
B
3.9%
+9.65%
Buy spread
50
50
47
47
Kalshi
A
13.5%
B
4.0%
+9.55%
Buy spread
52
52
47
47
Kalshi
A
13.5%
B
4.0%
+9.55%
Buy spread
51
51
48
48
Kalshi
A
15.5%
B
7.1%
+8.35%
Buy spread
49
49
45
45
Kalshi
A
9.2%
B
1.8%
+7.35%
Buy spread
49
49
46
46
Kalshi
A
9.2%
B
2.2%
+7.05%
Buy spread
50
50
48
48
Kalshi
A
13.5%
B
7.1%
+6.35%
Buy spread
52
52
48
48
Kalshi
A
13.5%
B
7.1%
+6.35%
Buy spread
51
51
49
49
Kalshi
A
15.5%
B
9.2%
+6.30%
Buy spread
49
49
B4
Below 45
Kalshi
A
9.2%
B
3.9%
+5.35%
Buy spread
48
48
45
45
Kalshi
A
7.1%
B
1.8%
+5.30%
Buy spread
49
49
47
47
Kalshi
A
9.2%
B
4.0%
+5.25%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

OG: Public OG contracts endpoint (Yes/No chance from contract data; no provider 24H volume field in this payload).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Which States Will Redistrict Before the 2026 Midterms?

LIVE
Updated 7 minutes ago · 7:48 AM PDT

This board tracks which states will complete redistricting before the 2026 midterms. Ohio currently has the highest implied probability at 97.9%, followed by California at 97.8%. DeFi Rate aggregates live Kalshi pricing as litigation and mapmaking deadlines develop.

Largest Spread
0.00%
Current Favorite
97.9%
Ohio +0.4%
30D Volume (Share)
$151.2K
K: 100.0%
Momentum Leader
+2.5%
Tennessee YTD change

Top prediction apps to trade on 2026 redistricting

State Redistricting Odds Before the 2026 Midterms

Current probabilities across platforms with liquidity indicators

Sort:
OH
Ohio
Vol $284 Spread
Agg 97.9%
↑ +0.4%
K 97.9%
CA
California
Vol $1.8K Spread
Agg 97.8%
↑ +0.2%
K 97.8%
FL
Florida
Vol $2.3K Spread
Agg 97.2%
↓ -0.2%
K 97.2%
TE
Texas
Vol $772 Spread
Agg 97.1%
— +0.0%
K 97.1%
LO
Louisiana
Vol $293 Spread
Agg 97.0%
↑ +0.8%
K 97.0%
NC
North Carolina
Vol $1.8K Spread
Agg 97.0%
↑ +1.9%
K 97.0%
TE
Tennessee
Vol $436 Spread
Agg 97.0%
↑ +2.5%
K 97.0%
MI
Missouri
Vol $93.0K Spread
Agg 4.7%
↓ -90.8%
K 4.7%
AL
Alabama
Vol $23.3K Spread
Agg 4.5%
↓ -84.0%
K 4.5%
VI
Virginia
Vol $1.9K Spread
Agg 3.3%
↓ -0.4%
K 3.3%
MI
Mississippi
Vol $525 Spread
Agg 3.0%
↑ +0.5%
K 3.0%
UT
Utah
Vol $11.6K Spread
Agg 3.0%
↓ -5.1%
K 3.0%
NY
New York
Vol $5.1K Spread
Agg 2.3%
↓ -0.3%
K 2.3%
KA
Kansas
Vol $278 Spread
Agg 2.1%
↓ -1.5%
K 2.1%
SC
South Carolina
Vol $137 Spread
Agg 1.8%
↓ -0.8%
K 1.8%
AR
Arizona
Vol $25 Spread
Agg 1.5%
↓ -1.0%
K 1.5%
GE
Georgia
Vol $263 Spread
Agg 1.5%
↓ -1.5%
K 1.5%
MI
Minnesota
Vol $0 Spread
Agg 1.5%
↓ -0.3%
K 1.5%
NE
Nebraska
Vol $1 Spread
Agg 1.5%
↓ -0.1%
K 1.5%
NJ
New Jersey
Vol $2 Spread
Agg 1.5%
↓ -1.0%
K 1.5%
IL
Illinois
Vol $3.0K Spread
Agg 1.4%
↓ -1.1%
K 1.4%
IN
Indiana
Vol $195 Spread
Agg 1.4%
↓ -1.5%
K 1.4%
WI
Wisconsin
Vol $1.1K Spread
Agg 1.4%
↓ -4.3%
K 1.4%
MA
Maryland
Vol $495 Spread
Agg 1.1%
↓ -1.4%
K 1.1%
WA
Washington
Vol $2.6K Spread
Agg 0.9%
↓ -4.1%
K 0.9%
Outcome Aggregated Spread Volume Kalshi
OH
Ohio
97.9%
↑ +0.4%
$284
Kalshi 97.9%
97.3–98.4¢ Vol $284
CA
California
97.8%
↑ +0.2%
$1.8K
Kalshi 97.8%
97.2–98.4¢ Vol $1.8K
FL
Florida
97.2%
↓ -0.2%
$2.3K
Kalshi 97.2%
96.2–98.2¢ Vol $2.3K
TE
Texas
97.1%
— +0.0%
$772
Kalshi 97.1%
96.2–98¢ Vol $772
LO
Louisiana
97.0%
↑ +0.8%
$293
Kalshi 97.0%
96–98¢ Vol $293
NC
North Carolina
97.0%
↑ +1.9%
$1.8K
Kalshi 97.0%
96.1–97.9¢ Vol $1.8K
TE
Tennessee
97.0%
↑ +2.5%
$436
Kalshi 97.0%
96–98¢ Vol $436
MI
Missouri
4.7%
↓ -90.8%
$93.0K
Kalshi 4.7%
3–6.3¢ Vol $93.0K
AL
Alabama
4.5%
↓ -84.0%
$23.3K
Kalshi 4.5%
2–7¢ Vol $23.3K
VI
Virginia
3.3%
↓ -0.4%
$1.9K
Kalshi 3.3%
2.6–3.9¢ Vol $1.9K
MI
Mississippi
3.0%
↑ +0.5%
$525
Kalshi 3.0%
2–4¢ Vol $525
UT
Utah
3.0%
↓ -5.1%
$11.6K
Kalshi 3.0%
2–4¢ Vol $11.6K
NY
New York
2.3%
↓ -0.3%
$5.1K
Kalshi 2.3%
1–3.5¢ Vol $5.1K
KA
Kansas
2.1%
↓ -1.5%
$278
Kalshi 2.1%
0.2–3.9¢ Vol $278
SC
South Carolina
1.8%
↓ -0.8%
$137
Kalshi 1.8%
1.7–1.8¢ Vol $137
AR
Arizona
1.5%
↓ -1.0%
$25
Kalshi 1.5%
1–2¢ Vol $25
GE
Georgia
1.5%
↓ -1.5%
$263
Kalshi 1.5%
1.1–1.8¢ Vol $263
MI
Minnesota
1.5%
↓ -0.3%
$0
Kalshi 1.5%
1.1–1.8¢ Vol $0
NE
Nebraska
1.5%
↓ -0.1%
$1
Kalshi 1.5%
1.1–1.8¢ Vol $1
NJ
New Jersey
1.5%
↓ -1.0%
$2
Kalshi 1.5%
1–1.9¢ Vol $2
IL
Illinois
1.4%
↓ -1.1%
$3.0K
Kalshi 1.4%
1.1–1.7¢ Vol $3.0K
IN
Indiana
1.4%
↓ -1.5%
$195
Kalshi 1.4%
1–1.8¢ Vol $195
WI
Wisconsin
1.4%
↓ -4.3%
$1.1K
Kalshi 1.4%
1.1–1.6¢ Vol $1.1K
MA
Maryland
1.1%
↓ -1.4%
$495
Kalshi 1.1%
0.4–1.8¢ Vol $495
WA
Washington
0.9%
↓ -4.1%
$2.6K
Kalshi 0.9%
0.1–1.7¢ Vol $2.6K

State Redistricting Probabilities Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

No cross-venue pairs available for this event.

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
OH
Ohio
VI
Virginia
Kalshi
A
97.9%
B
3.3%
+94.60%
Buy spread
CA
California
VI
Virginia
Kalshi
A
97.8%
B
3.3%
+94.55%
Buy spread
FL
Florida
VI
Virginia
Kalshi
A
97.2%
B
3.3%
+93.95%
Buy spread
TE
Texas
VI
Virginia
Kalshi
A
97.1%
B
3.3%
+93.85%
Buy spread
LO
Louisiana
VI
Virginia
Kalshi
A
97.0%
B
3.3%
+93.75%
Buy spread
NC
North Carolina
VI
Virginia
Kalshi
A
97.0%
B
3.3%
+93.75%
Buy spread
TE
Tennessee
VI
Virginia
Kalshi
A
97.0%
B
3.3%
+93.75%
Buy spread
OH
Ohio
AL
Alabama
Kalshi
A
97.9%
B
4.5%
+93.35%
Buy spread
CA
California
AL
Alabama
Kalshi
A
97.8%
B
4.5%
+93.30%
Buy spread
OH
Ohio
MI
Missouri
Kalshi
A
97.9%
B
4.7%
+93.20%
Buy spread
CA
California
MI
Missouri
Kalshi
A
97.8%
B
4.7%
+93.15%
Buy spread
FL
Florida
AL
Alabama
Kalshi
A
97.2%
B
4.5%
+92.70%
Buy spread
TE
Texas
AL
Alabama
Kalshi
A
97.1%
B
4.5%
+92.60%
Buy spread
FL
Florida
MI
Missouri
Kalshi
A
97.2%
B
4.7%
+92.55%
Buy spread
LO
Louisiana
AL
Alabama
Kalshi
A
97.0%
B
4.5%
+92.50%
Buy spread
NC
North Carolina
AL
Alabama
Kalshi
A
97.0%
B
4.5%
+92.50%
Buy spread
TE
Tennessee
AL
Alabama
Kalshi
A
97.0%
B
4.5%
+92.50%
Buy spread
TE
Texas
MI
Missouri
Kalshi
A
97.1%
B
4.7%
+92.45%
Buy spread
LO
Louisiana
MI
Missouri
Kalshi
A
97.0%
B
4.7%
+92.35%
Buy spread
NC
North Carolina
MI
Missouri
Kalshi
A
97.0%
B
4.7%
+92.35%
Buy spread
TE
Tennessee
MI
Missouri
Kalshi
A
97.0%
B
4.7%
+92.35%
Buy spread
MI
Missouri
VI
Virginia
Kalshi
A
4.7%
B
3.3%
+1.40%
Buy spread
AL
Alabama
VI
Virginia
Kalshi
A
4.5%
B
3.3%
+1.25%
Buy spread
OH
Ohio
LO
Louisiana
Kalshi
A
97.9%
B
97.0%
+0.85%
Buy spread
OH
Ohio
NC
North Carolina
Kalshi
A
97.9%
B
97.0%
+0.85%
Buy spread
OH
Ohio
TE
Tennessee
Kalshi
A
97.9%
B
97.0%
+0.85%
Buy spread
CA
California
LO
Louisiana
Kalshi
A
97.8%
B
97.0%
+0.80%
Buy spread
CA
California
NC
North Carolina
Kalshi
A
97.8%
B
97.0%
+0.80%
Buy spread
CA
California
TE
Tennessee
Kalshi
A
97.8%
B
97.0%
+0.80%
Buy spread
OH
Ohio
TE
Texas
Kalshi
A
97.9%
B
97.1%
+0.75%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
RV
Randy Villegas
Vol Spread 5.6%
Agg 90.4%
— +0.0%
Democratic Party
U 96.0%
K 90.4%
DV
David Valadao
Vol Spread 5.6%
Agg 9.4%
↓ -0.4%
Republican Party
U 15.0%
K 9.4%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
RV
Randy Villegas
Democratic Party
90.4%
— +0.0%
5.6%
Kalshi 90.4%
90–90.7¢ Vol $3.4K
Polymarket US 96.0%
85–96¢
Gemini
DV
David Valadao
Republican Party
9.4%
↓ -0.4%
5.6%
Kalshi 9.4%
8.8–10¢ Vol $17.6K
Polymarket US 15.0%
5–15¢
Gemini

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
DV
David Valadao
Republican Party
Kalshi Polymarket US
Buy @ K
10¢
Sell @ U
-5.00%
-5.10%
No
RV
Randy Villegas
Democratic Party
Kalshi Polymarket US
Buy @ K
90.7¢
Sell @ U
85¢
-5.70%
-6.61%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
RV
Randy Villegas
DV
David Valadao
Polymarket US
A
96.0%
B
15.0%
+81.00%
Buy spread
RV
Randy Villegas
DV
David Valadao
Kalshi
A
90.4%
B
9.4%
+80.95%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
AG
Adam Gray
Vol Spread 3.3%
Agg 93.3%
↑ +0.5%
Democratic Party
K 93.3%
G 92.5%
U 90.0%
KL
Kevin Lincoln
Vol Spread 2.0%
Agg 7.0%
— +0.0%
Republican Party
U 9.0%
K 7.0%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
AG
Adam Gray
Democratic Party
93.3%
↑ +0.5%
3.3%
Kalshi 93.3%
92.1–94.5¢ Vol $1.9K
Polymarket US 90.0%
89–90¢
Gemini 92.5%
91–94¢
KL
Kevin Lincoln
Republican Party
7.0%
— +0.0%
2.0%
Kalshi 7.0%
4.4–9.5¢ Vol $109
Polymarket US 9.0%
8–9¢
Gemini

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
AG
Adam Gray
Democratic Party
Polymarket US Kalshi
Buy @ U
90¢
Sell @ K
92.1¢
+2.10%
+1.18%
No
KL
Kevin Lincoln
Republican Party
Kalshi Polymarket US
Buy @ K
9.5¢
Sell @ U
-1.50%
-1.60%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
AG
Adam Gray
KL
Kevin Lincoln
Kalshi
A
93.3%
B
7.0%
+86.35%
Buy spread
AG
Adam Gray
KL
Kevin Lincoln
Polymarket US
A
90.0%
B
9.0%
+81.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
LF
Lois Frankel
Vol Spread 4.5%
Agg 94.5%
↑ +0.3%
Democratic Party
U 99.0%
K 94.5%
DA
Deborah Adeimy
Vol Spread 4.2%
Agg 5.8%
— +0.0%
Republican Party
U 10.0%
K 5.8%
Outcome Aggregated Spread Volume Kalshi Polymarket US
LF
Lois Frankel
Democratic Party
94.5%
↑ +0.3%
4.5%
Kalshi 94.5%
93.1–95.9¢ Vol $205
Polymarket US 99.0%
90–99¢
DA
Deborah Adeimy
Republican Party
5.8%
— +0.0%
4.2%
Kalshi 5.8%
4–7.6¢ Vol $144
Polymarket US 10.0%
1–10¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
DA
Deborah Adeimy
Republican Party
Polymarket US Kalshi
Buy @ U
10¢
Sell @ K
-6.00%
-6.07%
No
LF
Lois Frankel
Democratic Party
Polymarket US Kalshi
Buy @ U
99¢
Sell @ K
93.1¢
-5.90%
-6.83%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
LF
Lois Frankel
DA
Deborah Adeimy
Polymarket US
A
99.0%
B
10.0%
+89.00%
Buy spread
LF
Lois Frankel
DA
Deborah Adeimy
Kalshi
A
94.5%
B
5.8%
+88.70%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
ML
Matt Little
Vol Spread 4.8%
Agg 91.2%
— +0.0%
Democratic Party
U 96.0%
G 91.5%
K 91.2%
EP
Eric Pratt
Vol Spread 1.2%
Agg 8.8%
↑ +0.1%
Republican Party
U 10.0%
G 10.0%
K 8.8%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
ML
Matt Little
Democratic Party
91.2%
— +0.0%
4.8%
Kalshi 91.2%
90.1–92.3¢ Vol $781
Polymarket US 96.0%
89–96¢
Gemini 91.5%
89–94¢
EP
Eric Pratt
Republican Party
8.8%
↑ +0.1%
1.2%
Kalshi 8.8%
7.7–9.9¢ Vol $7
Polymarket US 10.0%
4–10¢
Gemini 10.0%
9–11¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
EP
Eric Pratt
Republican Party
Kalshi Gemini
Buy @ K
9.9¢
Sell @ G
-0.90%
-1.04%
No
ML
Matt Little
Democratic Party
Kalshi Polymarket US
Buy @ K
92.3¢
Sell @ U
89¢
-3.30%
-4.22%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
ML
Matt Little
EP
Eric Pratt
Polymarket US
A
96.0%
B
10.0%
+86.00%
Buy spread
ML
Matt Little
EP
Eric Pratt
Kalshi
A
91.2%
B
8.8%
+82.40%
Buy spread
ML
Matt Little
EP
Eric Pratt
Gemini
A
91.5%
B
10.0%
+81.50%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
EC
Emanuel Cleaver
Vol Spread 68.2%
Agg 91.1%
↑ +0.2%
Democratic Party
K 91.1%
G 73.0%
U 23.0%
RB
Rick Brattin
Vol Spread 0.7%
Agg 7.7%
↑ +0.1%
Republican Party
K 7.7%
G 7.0%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
EC
Emanuel Cleaver
Democratic Party
91.1%
↑ +0.2%
68.2%
Kalshi 91.1%
90.3–92¢ Vol $25.1K
Polymarket US 23.0%
23¢
Gemini 73.0%
73¢
RB
Rick Brattin
Republican Party
7.7%
↑ +0.1%
0.7%
Kalshi 7.7%
6.6–8.8¢ Vol $27.5K
Polymarket US
Gemini 7.0%
6–8¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
EC
Emanuel Cleaver
Democratic Party
Polymarket US Kalshi
Buy @ U
23¢
Sell @ K
90.3¢
+67.30%
+66.40%
Yes
RB
Rick Brattin
Republican Party
Gemini Kalshi
Buy @ G
Sell @ K
6.6¢
-1.40%
-1.50%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
EC
Emanuel Cleaver
RB
Rick Brattin
Kalshi
A
91.1%
B
7.7%
+83.45%
Buy spread
EC
Emanuel Cleaver
RB
Rick Brattin
Gemini
A
73.0%
B
7.0%
+66.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
CB
Christina Bohannan
Vol Spread 38.5%
Agg 79.5%
— +0.0%
Democratic Party
K 79.5%
U 77.0%
G 41.0%
MMM
Mariannette Miller-Meeks
Vol Spread 13.0%
Agg 22.5%
↑ +0.5%
Republican Party
U 25.0%
K 22.5%
G 12.0%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
CB
Christina Bohannan
Democratic Party
79.5%
— +0.0%
38.5%
Kalshi 79.5%
79–80¢ Vol $62.1K
Polymarket US 77.0%
76–77¢
Gemini 41.0%
1–81¢
MMM
Mariannette Miller-Meeks
Republican Party
22.5%
↑ +0.5%
13.0%
Kalshi 22.5%
22–23¢ Vol $19.6K
Polymarket US 25.0%
24–25¢
Gemini 12.0%
12¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
MMM
Mariannette Miller-Meeks
Republican Party
Gemini Polymarket US
Buy @ G
12¢
Sell @ U
24¢
+12.00%
+11.95%
Yes
CB
Christina Bohannan
Democratic Party
Polymarket US Kalshi
Buy @ U
77¢
Sell @ K
79¢
+2.00%
+1.21%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
CB
Christina Bohannan
MMM
Mariannette Miller-Meeks
Kalshi
A
79.5%
B
22.5%
+57.00%
Buy spread
CB
Christina Bohannan
MMM
Mariannette Miller-Meeks
Polymarket US
A
77.0%
B
25.0%
+52.00%
Buy spread
CB
Christina Bohannan
MMM
Mariannette Miller-Meeks
Gemini
A
41.0%
B
12.0%
+29.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
CH
Christina Hines
Vol Spread 1.5%
Agg 65.5%
— +0.0%
Democratic Party
K 65.5%
U 64.0%
MBJ
Michael Bouchard Jr.
Vol Spread 1.5%
Agg 34.5%
— +0.0%
Republican Party
U 36.0%
K 34.5%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
CH
Christina Hines
Democratic Party
65.5%
— +0.0%
1.5%
Kalshi 65.5%
65–66¢ Vol $1.3K
Polymarket US 64.0%
63–64¢
Gemini
MBJ
Michael Bouchard Jr.
Republican Party
34.5%
— +0.0%
1.5%
Kalshi 34.5%
34–35¢ Vol $703
Polymarket US 36.0%
35–36¢
Gemini

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
CH
Christina Hines
Democratic Party
Polymarket US Kalshi
Buy @ U
64¢
Sell @ K
65¢
+1.00%
+0.35%
No
MBJ
Michael Bouchard Jr.
Republican Party
Kalshi Polymarket US
Buy @ K
35¢
Sell @ U
35¢
+0.00%
-0.35%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
CH
Christina Hines
MBJ
Michael Bouchard Jr.
Kalshi
A
65.5%
B
34.5%
+31.00%
Buy spread
CH
Christina Hines
MBJ
Michael Bouchard Jr.
Polymarket US
A
64.0%
B
36.0%
+28.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
APL
Anna Paulina Luna
Vol Spread 6.5%
Agg 72.5%
— +0.0%
Republican Party
U 79.0%
K 72.5%
LG
Leela Gray
Vol Spread 1.5%
Agg 29.5%
— +0.0%
Democratic Party
U 31.0%
K 29.5%
Outcome Aggregated Spread Volume Kalshi Polymarket US
APL
Anna Paulina Luna
Republican Party
72.5%
— +0.0%
6.5%
Kalshi 72.5%
72–73¢ Vol $3.2K
Polymarket US 79.0%
70–79¢
LG
Leela Gray
Democratic Party
29.5%
— +0.0%
1.5%
Kalshi 29.5%
29–30¢ Vol $1.7K
Polymarket US 31.0%
22–31¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
LG
Leela Gray
Democratic Party
Polymarket US Kalshi
Buy @ U
31¢
Sell @ K
29¢
-2.00%
-2.29%
No
APL
Anna Paulina Luna
Republican Party
Kalshi Polymarket US
Buy @ K
73¢
Sell @ U
70¢
-3.00%
-3.73%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
APL
Anna Paulina Luna
LG
Leela Gray
Polymarket US
A
79.0%
B
31.0%
+48.00%
Buy spread
APL
Anna Paulina Luna
LG
Leela Gray
Kalshi
A
72.5%
B
29.5%
+43.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
GW
George Whitesides
Vol Spread 6.3%
Agg 92.7%
— +0.0%
Democratic Party
U 99.0%
K 92.7%
JG
Jason Gibbs
Vol Spread 5.8%
Agg 7.2%
— +0.0%
Republican Party
U 13.0%
K 7.2%
Outcome Aggregated Spread Volume Kalshi Polymarket US
GW
George Whitesides
Democratic Party
92.7%
— +0.0%
6.3%
Kalshi 92.7%
90–95.4¢ Vol $0
Polymarket US 99.0%
87–99¢
JG
Jason Gibbs
Republican Party
7.2%
— +0.0%
5.8%
Kalshi 7.2%
4.5–10¢ Vol $0
Polymarket US 13.0%
1–13¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
JG
Jason Gibbs
Republican Party
Polymarket US Kalshi
Buy @ U
13¢
Sell @ K
4.5¢
-8.50%
-8.57%
No
GW
George Whitesides
Democratic Party
Kalshi Polymarket US
Buy @ K
95.4¢
Sell @ U
87¢
-8.40%
-9.35%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
GW
George Whitesides
JG
Jason Gibbs
Polymarket US
A
99.0%
B
13.0%
+86.00%
Buy spread
GW
George Whitesides
JG
Jason Gibbs
Kalshi
A
92.7%
B
7.2%
+85.45%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
ES
Eric Sorensen
Vol Spread 51.5%
Agg 94.3%
↑ +0.5%
Democratic Party
U 99.0%
K 94.3%
G 47.5%
DV
Dillan Vancil
Vol Spread 5.3%
Agg 4.7%
— +0.0%
Republican Party
U 10.0%
G 5.0%
K 4.7%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
ES
Eric Sorensen
Democratic Party
94.3%
↑ +0.5%
51.5%
Kalshi 94.3%
93.7–94.9¢ Vol $1.1K
Polymarket US 99.0%
89–99¢
Gemini 47.5%
1–94¢
DV
Dillan Vancil
Republican Party
4.7%
— +0.0%
5.3%
Kalshi 4.7%
3.4–6¢ Vol $103
Polymarket US 10.0%
1–10¢
Gemini 5.0%
2–8¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
ES
Eric Sorensen
Democratic Party
Gemini Kalshi
Buy @ G
94¢
Sell @ K
93.7¢
-0.30%
-1.61%
No
DV
Dillan Vancil
Republican Party
Kalshi Gemini
Buy @ K
Sell @ G
-4.00%
-4.08%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
ES
Eric Sorensen
DV
Dillan Vancil
Kalshi
A
94.3%
B
4.7%
+89.60%
Buy spread
ES
Eric Sorensen
DV
Dillan Vancil
Polymarket US
A
99.0%
B
10.0%
+89.00%
Buy spread
ES
Eric Sorensen
DV
Dillan Vancil
Gemini
A
47.5%
B
5.0%
+42.50%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Texas Senate match up odds

Current probabilities across platforms with liquidity indicators

Sort:
DN2
Dem Nominee - 2
Vol $0 Spread
Agg 100.0%
↑ +35.5%
K 100.0%
DN
Dem Nominee
Vol $0 Spread
Agg 0.0%
↓ -35.5%
K 0.0%
Outcome Aggregated Spread Volume Kalshi
DN2
Dem Nominee - 2
100.0%
↑ +35.5%
$0
Kalshi 100.0%
Vol $0
DN
Dem Nominee
0.0%
↓ -35.5%
$0
Kalshi 0.0%
Vol $0

Texas Senate Odds: James Talarico at 59.5%

LIVE
Updated 6 minutes ago · 7:49 AM PDT

Texas is one of the most closely watched Senate contests of the 2026 cycle. James Talarico currently leads the winner market at 59.5%, with Ken Paxton at 40.5%. DeFi Rate aggregates live pricing from Kalshi, Gemini Predictions, Polymarket US and OG as the statewide race moves toward November.

Largest Spread
1.59%
Ken Paxton → View arbs
Current Favorite
59.5%
James Talarico +9.0%
30D Volume (Share)
K: — U: — G: — O: —
Momentum Leader
+9.0%
James Talarico YTD change

Top prediction apps to trade on the Texas Senate race

Current Texas Senate Winner Odds

Current probabilities across platforms with liquidity indicators

Sort:

Texas Senate Winner Odds Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
KP
Ken Paxton
Kalshi Polymarket US
Buy @ K
41¢
Sell @ U
43¢
+2.00%
+1.59%
Yes
JT
James Talarico
Polymarket US Kalshi
Buy @ U
59¢
Sell @ K
59¢
+0.00%
-0.59%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
JT
James Talarico
KP
Ken Paxton
Kalshi
A
59.5%
B
40.5%
+19.00%
Buy spread
JT
James Talarico
KP
Ken Paxton
Gemini
A
59.5%
B
40.5%
+19.00%
Buy spread
JT
James Talarico
KP
Ken Paxton
Polymarket US
A
59.0%
B
44.0%
+15.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

OG: Public OG contracts endpoint (Yes/No chance from contract data; no provider 24H volume field in this payload).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Maine Senate Odds: Troy Jackson at 67.5%

LIVE
Updated 6 minutes ago · 7:49 AM PDT

Maine’s Senate contest is one of the most active statewide general-election markets across prediction platforms. Troy Jackson currently leads at 67.5%, ahead of Susan Collins at 33.5%. DeFi Rate aggregates live pricing from Kalshi, Gemini Predictions, Polymarket US and OG as the race develops toward November.

Largest Spread
0.73%
Troy Jackson → View arbs
Current Favorite
67.5%
Troy Jackson +2.0%
30D Volume (Share)
K: — U: — G: — O: —
Momentum Leader
+2.0%
Troy Jackson YTD change

Top prediction apps to trade on the Maine Senate race

Current Maine Senate Winner Odds

Current probabilities across platforms with liquidity indicators

Sort:

Maine Senate Winner Odds Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
TJ
Troy Jackson
Polymarket US Gemini
Buy @ U
66¢
Sell @ G
67¢
+1.00%
+0.73%
No
SC
Susan Collins
Kalshi Polymarket US
Buy @ K
34¢
Sell @ U
35¢
+1.00%
+0.66%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
TJ
Troy Jackson
SC
Susan Collins
Kalshi
A
67.5%
B
33.5%
+34.00%
Buy spread
TJ
Troy Jackson
SC
Susan Collins
Gemini
A
68.0%
B
34.0%
+34.00%
Buy spread
TJ
Troy Jackson
SC
Susan Collins
Polymarket US
A
66.0%
B
36.0%
+30.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

OG: Public OG contracts endpoint (Yes/No chance from contract data; no provider 24H volume field in this payload).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Maine Senate Candidate Odds: Troy Jackson Leads

LIVE
Updated 6 minutes ago · 7:49 AM PDT

Kalshi’s candidate-specific Maine Senate market provides a deeper view than the party-winner contract alone. Troy Jackson currently leads at 67.5%, ahead of Susan Collins at 33.5%. DeFi Rate aggregates live pricing from Kalshi, Gemini Predictions, Polymarket US and OG for the named candidates as the November race evolves.

Largest Spread
0.73%
Troy Jackson → View arbs
Current Favorite
67.5%
Troy Jackson +3.0%
30D Volume (Share)
K: — U: — G: — O: —
Momentum Leader
+3.0%
Troy Jackson YTD change

Top prediction apps to trade on the Maine Senate race

Current Maine Senate Candidate Odds

Current probabilities across platforms with liquidity indicators

Sort:
TJ
Troy Jackson
Vol Spread 4.0%
Agg 67.5%
↑ +3.0%
O 70.0%
G 68.0%
K 67.5%
U 66.0%
SC
Susan Collins
Vol Spread 2.5%
Agg 33.5%
↓ -2.0%
U 36.0%
O 36.0%
G 34.0%
K 33.5%
AKI
Angus King III
Vol $6 Spread
Agg 0.1%
— +0.0%
K 0.1%
BB
Brian Bryant
Vol $0 Spread
Agg 0.1%
— +0.0%
K 0.1%
DK
Dan Kleban
Vol $2 Spread
Agg 0.1%
— +0.0%
K 0.1%
GP
Graham Platner
Vol $1.8K Spread
Agg 0.1%
↓ -0.1%
K 0.1%
JM
Janet Mills
Vol $2 Spread
Agg 0.1%
— +0.0%
K 0.1%
JG
Jared Golden
Vol $0 Spread
Agg 0.1%
— +0.0%
K 0.1%
MD
Mattie Daughtrey
Vol $0 Spread
Agg 0.1%
— +0.0%
K 0.1%
NS
Nirav Shah
Vol $2 Spread
Agg 0.1%
— +0.0%
K 0.1%
PD
Patrick Dempsey
Vol $0 Spread
Agg 0.1%
— +0.0%
K 0.1%
SG
Sara Gideon
Vol $9 Spread
Agg 0.1%
— +0.0%
K 0.1%
SB
Shenna Bellows
Vol $0 Spread
Agg 0.1%
— +0.0%
K 0.1%
SK
Stephen King
Vol $2 Spread
Agg 0.1%
— +0.0%
K 0.1%
VG
Valli Geiger
Vol $1 Spread
Agg 0.1%
— +0.0%
K 0.1%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini OG
TJ
Troy Jackson
67.5%
↑ +3.0%
4.0%
Kalshi 67.5%
67–68¢ Vol $86.8K
Polymarket US 66.0%
65–66¢
Gemini 68.0%
67–69¢
OG 70.0%
70¢
SC
Susan Collins
33.5%
↓ -2.0%
2.5%
Kalshi 33.5%
33–34¢ Vol $127.8K
Polymarket US 36.0%
35–36¢
Gemini 34.0%
33–35¢
OG 36.0%
36¢
AKI
Angus King III
0.1%
— +0.0%
$6
Kalshi 0.1%
0–0.1¢ Vol $6
Polymarket US
Gemini
OG
BB
Brian Bryant
0.1%
— +0.0%
$0
Kalshi 0.1%
0–0.1¢ Vol $0
Polymarket US
Gemini
OG
DK
Dan Kleban
0.1%
— +0.0%
$2
Kalshi 0.1%
0–0.1¢ Vol $2
Polymarket US
Gemini
OG
GP
Graham Platner
0.1%
↓ -0.1%
$1.8K
Kalshi 0.1%
0–0.1¢ Vol $1.8K
Polymarket US
Gemini
OG
JM
Janet Mills
0.1%
— +0.0%
$2
Kalshi 0.1%
0–0.1¢ Vol $2
Polymarket US
Gemini
OG
JG
Jared Golden
0.1%
— +0.0%
$0
Kalshi 0.1%
0–0.1¢ Vol $0
Polymarket US
Gemini
OG
MD
Mattie Daughtrey
0.1%
— +0.0%
$0
Kalshi 0.1%
0–0.1¢ Vol $0
Polymarket US
Gemini
OG
NS
Nirav Shah
0.1%
— +0.0%
$2
Kalshi 0.1%
0–0.1¢ Vol $2
Polymarket US
Gemini
OG
PD
Patrick Dempsey
0.1%
— +0.0%
$0
Kalshi 0.1%
0–0.1¢ Vol $0
Polymarket US
Gemini
OG
SG
Sara Gideon
0.1%
— +0.0%
$9
Kalshi 0.1%
0–0.1¢ Vol $9
Polymarket US
Gemini
OG
SB
Shenna Bellows
0.1%
— +0.0%
$0
Kalshi 0.1%
0–0.1¢ Vol $0
Polymarket US
Gemini
OG
SK
Stephen King
0.1%
— +0.0%
$2
Kalshi 0.1%
0–0.1¢ Vol $2
Polymarket US
Gemini
OG
VG
Valli Geiger
0.1%
— +0.0%
$1
Kalshi 0.1%
0–0.1¢ Vol $1
Polymarket US
Gemini
OG

Maine Senate Candidate Odds Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
TJ
Troy Jackson
Polymarket US Gemini
Buy @ U
66¢
Sell @ G
67¢
+1.00%
+0.73%
No
SC
Susan Collins
Kalshi Polymarket US
Buy @ K
34¢
Sell @ U
35¢
+1.00%
+0.66%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
TJ
Troy Jackson
AKI
Angus King III
Kalshi
A
67.5%
B
0.1%
+67.45%
Buy spread
TJ
Troy Jackson
BB
Brian Bryant
Kalshi
A
67.5%
B
0.1%
+67.45%
Buy spread
TJ
Troy Jackson
DK
Dan Kleban
Kalshi
A
67.5%
B
0.1%
+67.45%
Buy spread
TJ
Troy Jackson
GP
Graham Platner
Kalshi
A
67.5%
B
0.1%
+67.45%
Buy spread
TJ
Troy Jackson
JM
Janet Mills
Kalshi
A
67.5%
B
0.1%
+67.45%
Buy spread
TJ
Troy Jackson
JG
Jared Golden
Kalshi
A
67.5%
B
0.1%
+67.45%
Buy spread
TJ
Troy Jackson
MD
Mattie Daughtrey
Kalshi
A
67.5%
B
0.1%
+67.45%
Buy spread
TJ
Troy Jackson
NS
Nirav Shah
Kalshi
A
67.5%
B
0.1%
+67.45%
Buy spread
TJ
Troy Jackson
SC
Susan Collins
Kalshi
A
67.5%
B
33.5%
+34.00%
Buy spread
TJ
Troy Jackson
SC
Susan Collins
Gemini
A
68.0%
B
34.0%
+34.00%
Buy spread
SC
Susan Collins
AKI
Angus King III
Kalshi
A
33.5%
B
0.1%
+33.45%
Buy spread
SC
Susan Collins
BB
Brian Bryant
Kalshi
A
33.5%
B
0.1%
+33.45%
Buy spread
SC
Susan Collins
DK
Dan Kleban
Kalshi
A
33.5%
B
0.1%
+33.45%
Buy spread
SC
Susan Collins
GP
Graham Platner
Kalshi
A
33.5%
B
0.1%
+33.45%
Buy spread
SC
Susan Collins
JM
Janet Mills
Kalshi
A
33.5%
B
0.1%
+33.45%
Buy spread
SC
Susan Collins
JG
Jared Golden
Kalshi
A
33.5%
B
0.1%
+33.45%
Buy spread
SC
Susan Collins
MD
Mattie Daughtrey
Kalshi
A
33.5%
B
0.1%
+33.45%
Buy spread
SC
Susan Collins
NS
Nirav Shah
Kalshi
A
33.5%
B
0.1%
+33.45%
Buy spread
TJ
Troy Jackson
SC
Susan Collins
Polymarket US
A
66.0%
B
36.0%
+30.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

OG: Public OG contracts endpoint (Yes/No chance from contract data; no provider 24H volume field in this payload).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Michigan Senate Odds: Abdul El-Sayed at 65.5%

LIVE
Updated 6 minutes ago · 7:49 AM PDT

Michigan’s open Senate race is one of the cycle’s most active general-election contests. Abdul El-Sayed currently leads at 65.5%, ahead of Mike Rogers at 34.5%. DeFi Rate aggregates live pricing from Kalshi, Gemini Predictions, Polymarket US and OG as the nominees compete for the seat.

Largest Spread
1.86%
Mike Rogers → View arbs
Current Favorite
65.5%
Abdul El-Sayed +10.0%
30D Volume (Share)
K: — U: — G: — O: —
Momentum Leader
+10.0%
Abdul El-Sayed YTD change

Top prediction apps to trade on the Michigan Senate race

Current Michigan Senate Winner Odds

Current probabilities across platforms with liquidity indicators

Sort:

Michigan Senate Winner Odds Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
MR
Mike Rogers
Polymarket US Gemini
Buy @ U
33¢
Sell @ G
35¢
+2.00%
+1.86%
Yes
AES
Abdul El-Sayed
Gemini Polymarket US
Buy @ G
65¢
Sell @ U
66¢
+1.00%
+0.74%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
AES
Abdul El-Sayed
MR
Mike Rogers
Polymarket US
A
67.0%
B
33.0%
+34.00%
Buy spread
AES
Abdul El-Sayed
MR
Mike Rogers
Kalshi
A
65.5%
B
34.5%
+31.00%
Buy spread
AES
Abdul El-Sayed
MR
Mike Rogers
Gemini
A
64.5%
B
35.5%
+29.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

OG: Public OG contracts endpoint (Yes/No chance from contract data; no provider 24H volume field in this payload).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Ohio Senate Odds: Sherrod Brown at 55.5%

LIVE
Updated 6 minutes ago · 7:49 AM PDT

Ohio’s Senate contest is a major statewide race on the 2026 midterm board. Sherrod Brown currently leads at 55.5%, ahead of Jon Husted at 44.5%. DeFi Rate aggregates live pricing from Kalshi, Gemini Predictions, Polymarket US and OG as the campaign moves toward Election Day.

Largest Spread
-0.45%
Jon Husted → View arbs
Current Favorite
55.5%
Sherrod Brown +2.0%
30D Volume (Share)
K: — U: — G: — O: —
Momentum Leader
+2.0%
Sherrod Brown YTD change

Top prediction apps to trade on the Ohio Senate race

Current Ohio Senate Winner Odds

Current probabilities across platforms with liquidity indicators

Sort:

Ohio Senate Winner Odds Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
JH
Jon Husted
Kalshi Polymarket US
Buy @ K
45¢
Sell @ U
45¢
+0.00%
-0.45%
No
SB
Sherrod Brown
Polymarket US Kalshi
Buy @ U
56¢
Sell @ K
55¢
-1.00%
-1.55%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
SB
Sherrod Brown
JH
Jon Husted
Kalshi
A
55.5%
B
44.5%
+11.00%
Buy spread
SB
Sherrod Brown
JH
Jon Husted
Polymarket US
A
56.0%
B
46.0%
+10.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

OG: Public OG contracts endpoint (Yes/No chance from contract data; no provider 24H volume field in this payload).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
AH
Ashley Hinson
Vol Spread 0.5%
Agg 59.5%
— +0.0%
Republican Party
K 59.5%
G 59.5%
U 59.0%
JT
Josh Turek
Vol Spread 3.5%
Agg 40.5%
— +0.0%
Democratic Party
G 41.5%
K 40.5%
U 38.0%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
AH
Ashley Hinson
Republican Party
59.5%
— +0.0%
0.5%
Kalshi 59.5%
59–60¢ Vol $169.7K
Polymarket US 59.0%
58–59¢
Gemini 59.5%
58–61¢
JT
Josh Turek
Democratic Party
40.5%
— +0.0%
3.5%
Kalshi 40.5%
40–41¢ Vol $494.6K
Polymarket US 38.0%
37–38¢
Gemini 41.5%
41–42¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
JT
Josh Turek
Democratic Party
Polymarket US Gemini
Buy @ U
38¢
Sell @ G
41¢
+3.00%
+2.84%
Yes
AH
Ashley Hinson
Republican Party
Polymarket US Kalshi
Buy @ U
59¢
Sell @ K
59¢
+0.00%
-0.59%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
AH
Ashley Hinson
JT
Josh Turek
Polymarket US
A
59.0%
B
38.0%
+21.00%
Buy spread
AH
Ashley Hinson
JT
Josh Turek
Kalshi
A
59.5%
B
40.5%
+19.00%
Buy spread
AH
Ashley Hinson
JT
Josh Turek
Gemini
A
59.5%
B
41.5%
+18.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
RC
Roy Cooper
Vol Spread 0.4%
Agg 92.5%
↑ +0.1%
Democratic Party
K 92.5%
U 92.0%
MW
Michael Whatley
Vol Spread 0.9%
Agg 8.0%
— +0.0%
Republican Party
K 8.0%
G 7.5%
U 7.0%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
RC
Roy Cooper
Democratic Party
92.5%
↑ +0.1%
0.4%
Kalshi 92.5%
92.2–92.7¢ Vol $42.8K
Polymarket US 92.0%
91–92¢
Gemini
MW
Michael Whatley
Republican Party
8.0%
— +0.0%
0.9%
Kalshi 8.0%
7.9–8¢ Vol $86.9K
Polymarket US 7.0%
6–7¢
Gemini 7.5%
6–9¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
MW
Michael Whatley
Republican Party
Polymarket US Kalshi
Buy @ U
Sell @ K
7.9¢
+0.90%
+0.82%
No
RC
Roy Cooper
Democratic Party
Polymarket US Kalshi
Buy @ U
92¢
Sell @ K
92.2¢
+0.20%
-0.72%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
RC
Roy Cooper
MW
Michael Whatley
Polymarket US
A
92.0%
B
7.0%
+85.00%
Buy spread
RC
Roy Cooper
MW
Michael Whatley
Kalshi
A
92.5%
B
8.0%
+84.50%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
DGN
Darline Graham Nordone
Vol Spread 2.0%
Agg 86.5%
— +0.0%
Republican Party
U 88.0%
K 86.5%
G 86.0%
AA
Annie Andrews
Vol Spread 1.5%
Agg 13.5%
— +0.0%
Democratic Party
U 15.0%
K 13.5%
G 13.5%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
DGN
Darline Graham Nordone
Republican Party
86.5%
— +0.0%
2.0%
Kalshi 86.5%
86–87¢ Vol $60.6K
Polymarket US 88.0%
87–88¢
Gemini 86.0%
85–87¢
AA
Annie Andrews
Democratic Party
13.5%
— +0.0%
1.5%
Kalshi 13.5%
13–14¢ Vol $111.7K
Polymarket US 15.0%
14–15¢
Gemini 13.5%
12–15¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
AA
Annie Andrews
Democratic Party
Kalshi Polymarket US
Buy @ K
14¢
Sell @ U
14¢
+0.00%
-0.14%
No
DGN
Darline Graham Nordone
Republican Party
Gemini Polymarket US
Buy @ G
87¢
Sell @ U
87¢
+0.00%
-0.35%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
DGN
Darline Graham Nordone
AA
Annie Andrews
Kalshi
A
86.5%
B
13.5%
+73.00%
Buy spread
DGN
Darline Graham Nordone
AA
Annie Andrews
Polymarket US
A
88.0%
B
15.0%
+73.00%
Buy spread
DGN
Darline Graham Nordone
AA
Annie Andrews
Gemini
A
86.0%
B
13.5%
+72.50%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
MP
Mary Peltola
Democratic Party
Gemini Polymarket
Buy @ G
66¢
Sell @ P
73¢
+7.00%
+6.74%
Yes
DS
Dan Sullivan
Republican Party
Polymarket Polymarket US
Buy @ P
27¢
Sell @ U
31¢
+4.00%
+4.00%
Yes

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
MP
Mary Peltola
DS
Dan Sullivan
Polymarket
A
73.5%
B
26.5%
+47.00%
Buy spread
MP
Mary Peltola
DS
Dan Sullivan
Kalshi
A
71.5%
B
29.5%
+42.00%
Buy spread
MP
Mary Peltola
DS
Dan Sullivan
Polymarket US
A
67.0%
B
32.0%
+35.00%
Buy spread
DS
Dan Sullivan
MP
Mary Peltola
Gemini
A
37.0%
B
33.5%
+3.50%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket: Market data via their API (token prices + best bid/ask + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
RM
Roger Marshall
Vol Spread 0.5%
Agg 73.5%
— +0.0%
Republican Party
U 74.0%
K 73.5%
AH
Adam Hamilton
Vol Spread 3.5%
Agg 26.5%
— +0.0%
Democratic Party
U 30.0%
K 26.5%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
RM
Roger Marshall
Republican Party
73.5%
— +0.0%
0.5%
Kalshi 73.5%
73–74¢ Vol $147.6K
Polymarket US 74.0%
73–74¢
Gemini
AH
Adam Hamilton
Democratic Party
26.5%
— +0.0%
3.5%
Kalshi 26.5%
26–27¢ Vol $170.4K
Polymarket US 30.0%
29–30¢
Gemini

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
AH
Adam Hamilton
Democratic Party
Kalshi Polymarket US
Buy @ K
27¢
Sell @ U
29¢
+2.00%
+1.73%
Yes
RM
Roger Marshall
Republican Party
Polymarket US Kalshi
Buy @ U
74¢
Sell @ K
73¢
-1.00%
-1.73%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
RM
Roger Marshall
AH
Adam Hamilton
Kalshi
A
73.5%
B
26.5%
+47.00%
Buy spread
RM
Roger Marshall
AH
Adam Hamilton
Polymarket US
A
74.0%
B
30.0%
+44.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

California Governor Odds 2026: Becerra vs. Hilton

LIVE
Updated 11 minutes ago · 7:44 AM PDT

California's June 2 top-two primary is certified: Democrat Xavier Becerra finished first with 28.0% of the vote and Republican Steve Hilton finished second with 24.6%. They advance to the November 3 general election. Xavier Becerra now leads the winner market at 94.4%, ahead of Steve Hilton at 4.2%. DeFi Rate aggregates current pricing from Kalshi, Polymarket Global, Polymarket US, Gemini Predictions and OG; venue-level activity is shown separately because the platforms report volume on different bases.

Largest Spread
5.25%
Steve Hilton
Current Favorite
94.4%
Xavier Becerra 1.1%
30D Volume (Share)
K: — P: — U: — G: — O: —
Momentum Leader
0.0%
Tom Steyer 7D change

Top prediction apps to trade on the California governor race

CA Governor odds: Xavier Becerra is the current favorite to win over Steve Hilton

Current probabilities across platforms with liquidity indicators

Sort:
XB
Xavier Becerra
Vol Spread 2.2%
Agg 94.4%
↓ -1.1%
G 96.5%
U 96.0%
K 95.7%
P 94.3%
SH
Steve Hilton
Vol Spread 5.3%
Agg 4.2%
↓ -0.2%
O 9.0%
P 5.5%
U 5.0%
G 4.5%
K 3.8%
TS
Tom Steyer
Vol $8.9K Spread
Agg 0.1%
— +0.0%
P 0.1%
AP
Alex Padilla
Vol $177 Spread
Agg 0.1%
— +0.0%
P 0.1%
AV
Antonio Villaraigosa
Vol $0 Spread
Agg 0.1%
— +0.0%
P 0.1%
BY
Bette Yee
Vol $0 Spread
Agg 0.1%
— +0.0%
P 0.1%
BW
Butch Ware
Vol $2 Spread
Agg 0.1%
— +0.0%
P 0.1%
CB
Chad Bianco
Vol $269 Spread
Agg 0.1%
— +0.0%
P 0.1%
DM
Daniel Mercuri
Vol $0 Spread
Agg 0.1%
— +0.0%
P 0.1%
EK
Eleni Kounalakis
Vol $1 Spread
Agg 0.1%
— +0.0%
P 0.1%
ES
Eric Swalwell
Vol $0 Spread
Agg 0.1%
— +0.0%
P 0.1%
KH
Kamala Harris
Vol $201 Spread
Agg 0.1%
— +0.0%
P 0.1%
KP
Katie Porter
Vol $18 Spread
Agg 0.1%
— +0.0%
P 0.1%
KL
Kyle Langford
Vol $0 Spread
Agg 0.1%
— +0.0%
P 0.1%
LZ
Leo Zacky
Vol $0 Spread
Agg 0.1%
— +0.0%
P 0.1%
MM
Matt Mahan
Vol $2.0K Spread
Agg 0.1%
— +0.0%
P 0.1%
MY
Michael Younger
Vol $9 Spread
Agg 0.1%
— +0.0%
P 0.1%
NS
Nicole Shanahan
Vol $3 Spread
Agg 0.1%
— +0.0%
P 0.1%
RC
Rick Caruso
Vol $66 Spread
Agg 0.1%
— +0.0%
P 0.1%
SC
Stephen Cloobeck
Vol $0 Spread
Agg 0.1%
— +0.0%
P 0.1%
TA
Toni Atkins
Vol $6 Spread
Agg 0.1%
— +0.0%
P 0.1%
TT
Tony Thurmond
Vol $94 Spread
Agg 0.1%
— +0.0%
P 0.1%
CA
Ché Ahn
Vol $0 Spread
Agg 0.0%
K 0.0%
EA
Ethan Agarwal
Vol $0 Spread
Agg 0.0%
K 0.0%
RB
Rob Bonta
Vol $0 Spread
Agg 0.0%
K 0.0%
Outcome Aggregated Spread Volume Kalshi Polymarket Polymarket US Gemini OG
XB
Xavier Becerra
94.4%
↓ -1.1%
2.2%
Kalshi 95.7%
95.5–95.8¢ Vol $298.8K
Polymarket 94.3%
94–94.5¢ Vol $171.7K
Polymarket US 96.0%
95–96¢
Gemini 96.5%
96–97¢
OG
SH
Steve Hilton
4.2%
↓ -0.2%
5.3%
Kalshi 3.8%
3.6–3.9¢ Vol $391.9K
Polymarket 5.5%
5.4–5.6¢ Vol $122.8K
Polymarket US 5.0%
4–5¢
Gemini 4.5%
4–5¢
OG 9.0%
TS
Tom Steyer
0.1%
— +0.0%
$8.9K
Kalshi
Vol $0
Polymarket 0.1%
0.2¢ Vol $8.9K
Polymarket US
Gemini
OG
AP
Alex Padilla
0.1%
— +0.0%
$177
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $177
Polymarket US
Gemini
OG
AV
Antonio Villaraigosa
0.1%
— +0.0%
$0
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $0
Polymarket US
Gemini
OG
BY
Bette Yee
0.1%
— +0.0%
$0
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $0
Polymarket US
Gemini
OG
BW
Butch Ware
0.1%
— +0.0%
$2
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $2
Polymarket US
Gemini
OG
CB
Chad Bianco
0.1%
— +0.0%
$269
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $269
Polymarket US
Gemini
OG
DM
Daniel Mercuri
0.1%
— +0.0%
$0
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $0
Polymarket US
Gemini
OG
EK
Eleni Kounalakis
0.1%
— +0.0%
$1
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $1
Polymarket US
Gemini
OG
ES
Eric Swalwell
0.1%
— +0.0%
$0
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $0
Polymarket US
Gemini
OG
KH
Kamala Harris
0.1%
— +0.0%
$201
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $201
Polymarket US
Gemini
OG
KP
Katie Porter
0.1%
— +0.0%
$18
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $18
Polymarket US
Gemini
OG
KL
Kyle Langford
0.1%
— +0.0%
$0
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $0
Polymarket US
Gemini
OG
LZ
Leo Zacky
0.1%
— +0.0%
$0
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $0
Polymarket US
Gemini
OG
MM
Matt Mahan
0.1%
— +0.0%
$2.0K
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $2.0K
Polymarket US
Gemini
OG
MY
Michael Younger
0.1%
— +0.0%
$9
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $9
Polymarket US
Gemini
OG
NS
Nicole Shanahan
0.1%
— +0.0%
$3
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $3
Polymarket US
Gemini
OG
RC
Rick Caruso
0.1%
— +0.0%
$66
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $66
Polymarket US
Gemini
OG
SC
Stephen Cloobeck
0.1%
— +0.0%
$0
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $0
Polymarket US
Gemini
OG
TA
Toni Atkins
0.1%
— +0.0%
$6
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $6
Polymarket US
Gemini
OG
TT
Tony Thurmond
0.1%
— +0.0%
$94
Kalshi
Vol $0
Polymarket 0.1%
0.1¢ Vol $94
Polymarket US
Gemini
OG
CA
Ché Ahn
0.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
Polymarket US
Gemini
OG
EA
Ethan Agarwal
0.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
Polymarket US
Gemini
OG
RB
Rob Bonta
0.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
Polymarket US
Gemini
OG

Probability Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

California Gov Party Winner

LIVE
Updated 11 minutes ago · 7:44 AM PDT

Aggregated cross-platform odds for California Gov Party Winner. Current probability synthesis from Kalshi and Polymarket with arbitrage detection and venue comparison.

Largest Spread
0.00%
Current Favorite
95.9%
the Democratic party +10.4%
24H Volume (Share)
$375
K: 100.0%
Momentum Leader
+10.4%
the Democratic party YTD change

Probability Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
TDP
the Democratic party
Vol $16 Spread
Agg 95.9%
↑ +10.4%
K 95.9%
TRP
the Republican party
Vol $358 Spread
Agg 4.2%
↓ -10.3%
K 4.2%
Outcome Aggregated Spread Volume Kalshi
TDP
the Democratic party
95.9%
↑ +10.4%
$16
Kalshi 95.9%
95.8–95.9¢ Vol $16
TRP
the Republican party
4.2%
↓ -10.3%
$358
Kalshi 4.2%
4.1–4.3¢ Vol $358

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

No cross-venue pairs available for this event.

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
TDP
the Democratic party
TRP
the Republican party
Kalshi
A
95.9%
B
4.2%
+91.65%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Georgia Election Odds: Senate and Governor Predictions

LIVE
Updated 10 minutes ago · 7:46 AM PDT

Aggregated cross-platform odds for Georgia Election Odds: Senate and Governor Predictions. Current probability synthesis from Kalshi, Polymarket Global, Polymarket US, Gemini Predictions and OG with arbitrage detection and venue comparison.

Largest Spread
19.00%
Keisha Lance Bottoms
Current Favorite
93.8%
Democrats +1.4%
30D Volume (Share)
K: — P: — U: — G: — O: —
Momentum Leader
+1.4%
Democrats 7D change

Which party will win the US Senate race in Georgia in 2026?

Current probabilities across platforms with liquidity indicators

Sort:

Which party will win the Georgia governorship in 2026?

Current probabilities across platforms with liquidity indicators

Sort:

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
AA
Amy Acton
Vol Spread 0.5%
Agg 57.5%
— +0.0%
Democratic Party
U 58.0%
K 57.5%
G 57.5%
VR
Vivek Ramaswamy
Vol Spread 23.5%
Agg 43.5%
↑ +1.0%
Republican Party
K 43.5%
U 41.0%
G 20.0%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
AA
Amy Acton
Democratic Party
57.5%
— +0.0%
0.5%
Kalshi 57.5%
57–58¢ Vol $207.3K
Polymarket US 58.0%
57–58¢
Gemini 57.5%
56–59¢
VR
Vivek Ramaswamy
Republican Party
43.5%
↑ +1.0%
23.5%
Kalshi 43.5%
43–44¢ Vol $105.7K
Polymarket US 41.0%
40–41¢
Gemini 20.0%
20¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
VR
Vivek Ramaswamy
Republican Party
Gemini Kalshi
Buy @ G
20¢
Sell @ K
43¢
+23.00%
+22.49%
Yes
AA
Amy Acton
Democratic Party
Polymarket US Kalshi
Buy @ U
58¢
Sell @ K
57¢
-1.00%
-1.57%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
AA
Amy Acton
VR
Vivek Ramaswamy
Gemini
A
57.5%
B
20.0%
+37.50%
Buy spread
AA
Amy Acton
VR
Vivek Ramaswamy
Polymarket US
A
58.0%
B
41.0%
+17.00%
Buy spread
AA
Amy Acton
VR
Vivek Ramaswamy
Kalshi
A
57.5%
B
43.5%
+14.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
DC
David Crowley
Vol Spread 71.5%
Agg 83.5%
↓ -1.0%
Democratic Party
K 83.5%
U 83.0%
G 12.0%
TT
Tom Tiffany
Vol Spread 6.0%
Agg 16.5%
— +0.0%
Republican Party
U 18.0%
K 16.5%
G 12.0%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
DC
David Crowley
Democratic Party
83.5%
↓ -1.0%
71.5%
Kalshi 83.5%
83–84¢ Vol $29.9K
Polymarket US 83.0%
82–83¢
Gemini 12.0%
12¢
TT
Tom Tiffany
Republican Party
16.5%
— +0.0%
6.0%
Kalshi 16.5%
16–17¢ Vol $210.8K
Polymarket US 18.0%
17–18¢
Gemini 12.0%
12¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
DC
David Crowley
Democratic Party
Gemini Kalshi
Buy @ G
12¢
Sell @ K
83¢
+71.00%
+70.12%
Yes
TT
Tom Tiffany
Republican Party
Gemini Polymarket US
Buy @ G
12¢
Sell @ U
17¢
+5.00%
+4.95%
Yes

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
DC
David Crowley
TT
Tom Tiffany
Kalshi
A
83.5%
B
16.5%
+67.00%
Buy spread
DC
David Crowley
TT
Tom Tiffany
Polymarket US
A
83.0%
B
18.0%
+65.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
BD
Byron Donalds
Vol Spread 67.5%
Agg 79.5%
— +0.0%
Republican Party
K 79.5%
U 79.0%
G 12.0%
DJ
David Jolly
Vol Spread 2.5%
Agg 21.5%
— +0.0%
Democratic Party
K 21.5%
U 19.0%
G 19.0%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
BD
Byron Donalds
Republican Party
79.5%
— +0.0%
67.5%
Kalshi 79.5%
79–80¢ Vol $323.5K
Polymarket US 79.0%
78–79¢
Gemini 12.0%
12¢
DJ
David Jolly
Democratic Party
21.5%
— +0.0%
2.5%
Kalshi 21.5%
21–22¢ Vol $138.8K
Polymarket US 19.0%
18–19¢
Gemini 19.0%
19¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
BD
Byron Donalds
Republican Party
Gemini Kalshi
Buy @ G
12¢
Sell @ K
79¢
+67.00%
+66.16%
Yes
DJ
David Jolly
Democratic Party
Polymarket US Kalshi
Buy @ U
19¢
Sell @ K
21¢
+2.00%
+1.79%
Yes

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
BD
Byron Donalds
DJ
David Jolly
Polymarket US
A
79.0%
B
19.0%
+60.00%
Buy spread
BD
Byron Donalds
DJ
David Jolly
Kalshi
A
79.5%
B
21.5%
+58.00%
Buy spread
DJ
David Jolly
BD
Byron Donalds
Gemini
A
19.0%
B
12.0%
+7.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
KH
Kathy Hochul
Vol Spread 1.1%
Agg 92.9%
↑ +0.1%
Democratic Party
U 94.0%
G 93.0%
K 92.9%
BB
Bruce Blakeman
Vol Spread 0.9%
Agg 7.1%
↓ -0.2%
Republican Party
U 8.0%
G 7.5%
K 7.1%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
KH
Kathy Hochul
Democratic Party
92.9%
↑ +0.1%
1.1%
Kalshi 92.9%
92.7–93¢ Vol $47.1K
Polymarket US 94.0%
93–94¢
Gemini 93.0%
92–94¢
BB
Bruce Blakeman
Republican Party
7.1%
↓ -0.2%
0.9%
Kalshi 7.1%
6.8–7.4¢ Vol $75.6K
Polymarket US 8.0%
7–8¢
Gemini 7.5%
7–8¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
BB
Bruce Blakeman
Republican Party
Kalshi Polymarket US
Buy @ K
7.4¢
Sell @ U
-0.40%
-0.47%
No
KH
Kathy Hochul
Democratic Party
Kalshi Polymarket US
Buy @ K
93¢
Sell @ U
93¢
+0.00%
-0.93%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
KH
Kathy Hochul
BB
Bruce Blakeman
Polymarket US
A
94.0%
B
8.0%
+86.00%
Buy spread
KH
Kathy Hochul
BB
Bruce Blakeman
Kalshi
A
92.9%
B
7.1%
+85.75%
Buy spread
KH
Kathy Hochul
BB
Bruce Blakeman
Gemini
A
93.0%
B
7.5%
+85.50%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
GA
Greg Abbott
Vol Spread 69.0%
Agg 78.5%
— +0.0%
Republican Party
U 81.0%
K 78.5%
G 12.0%
GH
Gina Hinojosa
Vol Spread 11.0%
Agg 20.5%
↓ -2.0%
Democratic Party
U 23.0%
K 20.5%
G 12.0%
Outcome Aggregated Spread Volume Kalshi Polymarket US Gemini
GA
Greg Abbott
Republican Party
78.5%
— +0.0%
69.0%
Kalshi 78.5%
78–79¢ Vol $62.2K
Polymarket US 81.0%
80–81¢
Gemini 12.0%
12¢
GH
Gina Hinojosa
Democratic Party
20.5%
↓ -2.0%
11.0%
Kalshi 20.5%
20–21¢ Vol $70.4K
Polymarket US 23.0%
22–23¢
Gemini 12.0%
12¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
GA
Greg Abbott
Republican Party
Gemini Polymarket US
Buy @ G
12¢
Sell @ U
80¢
+68.00%
+67.95%
Yes
GH
Gina Hinojosa
Democratic Party
Gemini Polymarket US
Buy @ G
12¢
Sell @ U
22¢
+10.00%
+9.95%
Yes

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
GA
Greg Abbott
GH
Gina Hinojosa
Kalshi
A
78.5%
B
20.5%
+58.00%
Buy spread
GA
Greg Abbott
GH
Gina Hinojosa
Polymarket US
A
81.0%
B
23.0%
+58.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
JL
Joe Lombardo
Vol Spread 1.5%
Agg 55.5%
↑ +1.0%
Republican Party
U 57.0%
K 55.5%
AF
Aaron Ford
Vol Spread 1.5%
Agg 46.5%
— +0.0%
Democratic Party
K 46.5%
U 45.0%
Outcome Aggregated Spread Volume Kalshi Polymarket US
JL
Joe Lombardo
Republican Party
55.5%
↑ +1.0%
1.5%
Kalshi 55.5%
55–56¢ Vol $23.3K
Polymarket US 57.0%
56–57¢
AF
Aaron Ford
Democratic Party
46.5%
— +0.0%
1.5%
Kalshi 46.5%
46–47¢ Vol $23.1K
Polymarket US 45.0%
44–45¢

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
AF
Aaron Ford
Democratic Party
Polymarket US Kalshi
Buy @ U
45¢
Sell @ K
46¢
+1.00%
+0.54%
No
JL
Joe Lombardo
Republican Party
Kalshi Polymarket US
Buy @ K
56¢
Sell @ U
56¢
+0.00%
-0.56%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
JL
Joe Lombardo
AF
Aaron Ford
Polymarket US
A
57.0%
B
45.0%
+12.00%
Buy spread
JL
Joe Lombardo
AF
Aaron Ford
Kalshi
A
55.5%
B
46.5%
+9.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Who will advance from California's gov primary

LIVE
Updated 11 minutes ago · 7:44 AM PDT

Aggregated cross-platform odds for Who will advance from California's gov primary. Current probability synthesis from Kalshi and Polymarket with arbitrage detection and venue comparison.

Largest Spread
0.00%
Current Favorite
100.0%
Steve Hilton +52.5%
24H Volume (Share)
$0
K: — P: —
Momentum Leader
+90.5%
Xavier Becerra YTD change

Probability Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
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Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
SH
Steve Hilton
Vol $0 Spread
Agg 100.0%
↑ +52.5%
K 100.0%
XB
Xavier Becerra
Vol $0 Spread
Agg 100.0%
↑ +90.5%
K 100.0%
AV
Antonio Villaraigosa
Vol $0 Spread
Agg 0.0%
↓ -6.0%
K 0.0%
BY
Betty Yee
Vol $0 Spread
Agg 0.0%
↓ -7.0%
K 0.0%
CB
Chad Bianco
Vol $0 Spread
Agg 0.0%
↓ -39.5%
K 0.0%
EK
Eleni Kounalakis
Vol $0 Spread
Agg 0.0%
↓ -1.5%
K 0.0%
ES
Eric Swalwell
Vol $0 Spread
Agg 0.0%
↓ -67.0%
K 0.0%
EA
Ethan Agarwal
Vol $0 Spread
Agg 0.0%
↓ -2.0%
K 0.0%
KH
Kamala Harris
Vol $0 Spread
Agg 0.0%
↓ -4.0%
K 0.0%
KP
Katie Porter
Vol $0 Spread
Agg 0.0%
↓ -27.5%
K 0.0%
MM
Matt Mahan
Vol $0 Spread
Agg 0.0%
↓ -19.5%
K 0.0%
RC
Rick Caruso
Vol $0 Spread
Agg 0.0%
↓ -1.0%
K 0.0%
RB
Rob Bonta
Vol $0 Spread
Agg 0.0%
↓ -1.5%
K 0.0%
TS
Tom Steyer
Vol $0 Spread
Agg 0.0%
↓ -21.0%
K 0.0%
TT
Tony Thurmond
Vol $0 Spread
Agg 0.0%
↓ -5.0%
K 0.0%
WSH
Will Steve Hilton advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 100.0%
Settled
P 100.0%
Polymarket 100.0%
Vol $0 99.9–100¢
WXB
Will Xavier Becerra advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 100.0%
Settled
P 100.0%
Polymarket 100.0%
Vol $0 99.9–100¢
WAV
Will Antonio Villaraigosa advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.4¢
WBY
Will Betty Yee advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WBJ
Will Brandon Jones advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WBW
Will Butch Ware advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WCB
Will Carolina Buhler advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WCB
Will Chad Bianco advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WCA
Will Ché Ahn advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.6¢
WDM
Will Daniel Mercuri advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WDS
Will David Serpa advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WDT
Will David Thelen advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WDG
Will Derek Grasty advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WDC
Will Dylan Colbert advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WES
Will Eric Swalwell advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WEA
Will Ethan Agarwal advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.4¢
WIC
Will Ian Calderon advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WJA
Will Javen Allen advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WJP
Will Jimmy Parker advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WKP
Will Katie Porter advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.5¢
WKL
Will Kyle Langford advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.5¢
WLJ
Will Leonard Jackson advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WLZ
Will Leo Zacky advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WMM
Will Matt Mahan advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WNT
Will Nicholas Thompson advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WNM
Will Nicki Minaj advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WRR
Will Raji Rab advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WRR
Will Ramsey Robinson advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WRT
Will Ryan Tillman advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.5¢
WSH
Will Sharifah Hardie advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WSB
Will Sophia Brink advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WTP
Will Thunder Parley advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WTS
Will Tom Steyer advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WTT
Will Tony Thurmond advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
WZI
Will Zoltan Istvan advance from the 2026 California Governor primary election
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.6¢
Outcome Aggregated Spread Volume Kalshi Polymarket
SH
Steve Hilton
100.0%
↑ +52.5%
$0
Kalshi 100.0%
Vol $0
Polymarket
XB
Xavier Becerra
100.0%
↑ +90.5%
$0
Kalshi 100.0%
Vol $0
Polymarket
AV
Antonio Villaraigosa
0.0%
↓ -6.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
BY
Betty Yee
0.0%
↓ -7.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
CB
Chad Bianco
0.0%
↓ -39.5%
$0
Kalshi 0.0%
Vol $0
Polymarket
EK
Eleni Kounalakis
0.0%
↓ -1.5%
$0
Kalshi 0.0%
Vol $0
Polymarket
ES
Eric Swalwell
0.0%
↓ -67.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
EA
Ethan Agarwal
0.0%
↓ -2.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
KH
Kamala Harris
0.0%
↓ -4.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
KP
Katie Porter
0.0%
↓ -27.5%
$0
Kalshi 0.0%
Vol $0
Polymarket
MM
Matt Mahan
0.0%
↓ -19.5%
$0
Kalshi 0.0%
Vol $0
Polymarket
RC
Rick Caruso
0.0%
↓ -1.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
RB
Rob Bonta
0.0%
↓ -1.5%
$0
Kalshi 0.0%
Vol $0
Polymarket
TS
Tom Steyer
0.0%
↓ -21.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
TT
Tony Thurmond
0.0%
↓ -5.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
WSH
Will Steve Hilton advance from the 2026 California Governor primary election
100.0%
Settled
$0
Kalshi
Polymarket 100.0%
99.9–100¢ Vol $0
WXB
Will Xavier Becerra advance from the 2026 California Governor primary election
100.0%
Settled
$0
Kalshi
Polymarket 100.0%
99.9–100¢ Vol $0
WAV
Will Antonio Villaraigosa advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.4¢ Vol $0
WBY
Will Betty Yee advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WBJ
Will Brandon Jones advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WBW
Will Butch Ware advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WCB
Will Carolina Buhler advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WCB
Will Chad Bianco advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WCA
Will Ché Ahn advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.6¢ Vol $0
WDM
Will Daniel Mercuri advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WDS
Will David Serpa advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WDT
Will David Thelen advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WDG
Will Derek Grasty advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WDC
Will Dylan Colbert advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WES
Will Eric Swalwell advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WEA
Will Ethan Agarwal advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.4¢ Vol $0
WIC
Will Ian Calderon advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WJA
Will Javen Allen advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WJP
Will Jimmy Parker advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WKP
Will Katie Porter advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.5¢ Vol $0
WKL
Will Kyle Langford advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.5¢ Vol $0
WLJ
Will Leonard Jackson advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WLZ
Will Leo Zacky advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WMM
Will Matt Mahan advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WNT
Will Nicholas Thompson advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WNM
Will Nicki Minaj advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WRR
Will Raji Rab advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WRR
Will Ramsey Robinson advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WRT
Will Ryan Tillman advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.5¢ Vol $0
WSH
Will Sharifah Hardie advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WSB
Will Sophia Brink advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WTP
Will Thunder Parley advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WTS
Will Tom Steyer advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WTT
Will Tony Thurmond advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
WZI
Will Zoltan Istvan advance from the 2026 California Governor primary election
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.6¢ Vol $0

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

No cross-venue pairs available for this event.

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
SH
Steve Hilton
AV
Antonio Villaraigosa
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
SH
Steve Hilton
BY
Betty Yee
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
SH
Steve Hilton
CB
Chad Bianco
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
SH
Steve Hilton
EK
Eleni Kounalakis
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
SH
Steve Hilton
ES
Eric Swalwell
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
SH
Steve Hilton
EA
Ethan Agarwal
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
SH
Steve Hilton
KH
Kamala Harris
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
SH
Steve Hilton
KP
Katie Porter
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
XB
Xavier Becerra
AV
Antonio Villaraigosa
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
XB
Xavier Becerra
BY
Betty Yee
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
XB
Xavier Becerra
CB
Chad Bianco
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
XB
Xavier Becerra
EK
Eleni Kounalakis
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
XB
Xavier Becerra
ES
Eric Swalwell
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
XB
Xavier Becerra
EA
Ethan Agarwal
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
XB
Xavier Becerra
KH
Kamala Harris
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
XB
Xavier Becerra
KP
Katie Porter
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
WSH
Will Steve Hilton advance from the 2026 California Governor primary election
WAV
Will Antonio Villaraigosa advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WSH
Will Steve Hilton advance from the 2026 California Governor primary election
WBY
Will Betty Yee advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WSH
Will Steve Hilton advance from the 2026 California Governor primary election
WBJ
Will Brandon Jones advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WSH
Will Steve Hilton advance from the 2026 California Governor primary election
WBW
Will Butch Ware advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WSH
Will Steve Hilton advance from the 2026 California Governor primary election
WCB
Will Carolina Buhler advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WSH
Will Steve Hilton advance from the 2026 California Governor primary election
WCB
Will Chad Bianco advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WSH
Will Steve Hilton advance from the 2026 California Governor primary election
WCA
Will Ché Ahn advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WSH
Will Steve Hilton advance from the 2026 California Governor primary election
WDM
Will Daniel Mercuri advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WXB
Will Xavier Becerra advance from the 2026 California Governor primary election
WAV
Will Antonio Villaraigosa advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WXB
Will Xavier Becerra advance from the 2026 California Governor primary election
WBY
Will Betty Yee advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WXB
Will Xavier Becerra advance from the 2026 California Governor primary election
WBJ
Will Brandon Jones advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WXB
Will Xavier Becerra advance from the 2026 California Governor primary election
WBW
Will Butch Ware advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WXB
Will Xavier Becerra advance from the 2026 California Governor primary election
WCB
Will Carolina Buhler advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
WXB
Will Xavier Becerra advance from the 2026 California Governor primary election
WCB
Will Chad Bianco advance from the 2026 California Governor primary election
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket: Market data via their API (token prices + best bid/ask + 24H volume/liquidity when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

Resolved: Becerra and Hilton advanced from California's top-two primary

Current probabilities across platforms with liquidity indicators

Sort:
AV
Antonio Villaraigosa
Vol $0 Spread
Agg 0.0%
↓ -3.5%
K 0.0%
EK
Eleni Kounalakis
Vol $0 Spread
Agg 0.0%
↓ -0.4%
K 0.0%
KH
Kamala Harris
Vol $0 Spread
Agg 0.0%
↓ -0.4%
K 0.0%
RC
Rick Caruso
Vol $0 Spread
Agg 0.0%
↓ -0.4%
K 0.0%
RB
Rob Bonta
Vol $0 Spread
Agg 0.0%
↓ -0.4%
K 0.0%
SH
Steve Hilton
Vol $0 Spread
Agg 100.0%
Settled
P 100.0%
Polymarket 100.0%
Vol $0 99.9–100¢
XB
Xavier Becerra
Vol $0 Spread
Agg 100.0%
Settled
P 100.0%
Polymarket 100.0%
Vol $0 99.9–100¢
BY
Betty Yee
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
BJ
Brandon Jones
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
BW
Butch Ware
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
CB
Carolina Buhler
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
CB
Chad Bianco
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
CA
Ché Ahn
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.6¢
DM
Daniel Mercuri
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
DS
David Serpa
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
DT
David Thelen
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
DG
Derek Grasty
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
DC
Dylan Colbert
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
EC
Elaine Culotti
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
ES
Eric Swalwell
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
EA
Ethan Agarwal
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.4¢
IC
Ian Calderon
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
JA
Javen Allen
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
JP
Jimmy Parker
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
KP
Katie Porter
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.5¢
KL
Kyle Langford
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.5¢
LJ
Leonard Jackson
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
LZ
Leo Zacky
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
MM
Matt Mahan
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
NM
Nicki Minaj
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
RR
Raji Rab
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
RR
Ramsey Robinson
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
RT
Ryan Tillman
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.5¢
SH
Sharifah Hardie
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
SB
Sophia Brink
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
TP
Thunder Parley
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
TS
Tom Steyer
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
TT
Tony Thurmond
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
ZI
Zoltan Istvan
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.6¢
Outcome Aggregated Spread Volume Kalshi Polymarket
AV
Antonio Villaraigosa
0.0%
↓ -3.5%
$0
Kalshi 0.0%
Vol $0
Polymarket
EK
Eleni Kounalakis
0.0%
↓ -0.4%
$0
Kalshi 0.0%
Vol $0
Polymarket
KH
Kamala Harris
0.0%
↓ -0.4%
$0
Kalshi 0.0%
Vol $0
Polymarket
RC
Rick Caruso
0.0%
↓ -0.4%
$0
Kalshi 0.0%
Vol $0
Polymarket
RB
Rob Bonta
0.0%
↓ -0.4%
$0
Kalshi 0.0%
Vol $0
Polymarket
SH
Steve Hilton
100.0%
Settled
$0
Kalshi
Vol $0
Polymarket 100.0%
99.9–100¢ Vol $0
XB
Xavier Becerra
100.0%
Settled
$0
Kalshi
Vol $0
Polymarket 100.0%
99.9–100¢ Vol $0
BY
Betty Yee
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.1¢ Vol $0
BJ
Brandon Jones
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
BW
Butch Ware
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
CB
Carolina Buhler
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
CB
Chad Bianco
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.1¢ Vol $0
CA
Ché Ahn
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.6¢ Vol $0
DM
Daniel Mercuri
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
DS
David Serpa
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
DT
David Thelen
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
DG
Derek Grasty
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
DC
Dylan Colbert
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
EC
Elaine Culotti
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
ES
Eric Swalwell
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.1¢ Vol $0
EA
Ethan Agarwal
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.4¢ Vol $0
IC
Ian Calderon
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
JA
Javen Allen
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
JP
Jimmy Parker
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
KP
Katie Porter
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.5¢ Vol $0
KL
Kyle Langford
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.5¢ Vol $0
LJ
Leonard Jackson
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
LZ
Leo Zacky
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
MM
Matt Mahan
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.1¢ Vol $0
NM
Nicki Minaj
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
RR
Raji Rab
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
RR
Ramsey Robinson
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
RT
Ryan Tillman
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.5¢ Vol $0
SH
Sharifah Hardie
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
SB
Sophia Brink
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
TP
Thunder Parley
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
TS
Tom Steyer
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.1¢ Vol $0
TT
Tony Thurmond
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.1¢ Vol $0
ZI
Zoltan Istvan
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.6¢ Vol $0

Resolved: One Democrat and one Republican advanced

Current probabilities across platforms with liquidity indicators

Sort:
1DA
1 Democrat and 1 Republican
Vol $0 Spread
Agg 100.0%
Settled
P 100.0%
Polymarket 100.0%
Vol $0 99.9–100¢
2D
2 Democrats
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
2R
2 Republicans
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
Outcome Aggregated Spread Volume Kalshi Polymarket
1DA
1 Democrat and 1 Republican
100.0%
Settled
$0
Kalshi
Vol $0
Polymarket 100.0%
99.9–100¢ Vol $0
2D
2 Democrats
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.1¢ Vol $0
2R
2 Republicans
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.1¢ Vol $0

Texas Senate Republican Runoff Odds & Predictions

LIVE
Updated 10 minutes ago · 7:46 AM PDT

The US Senate Republican runoff between Ken Paxton and John Cornyn ends May 26, with early voting already underway. James Talarico cleared 50% on the Democratic side, defeating Jasmine Crockett and taking the Senate nomination outright. Trump endorsed Paxton on May 19, one week before voting ends, after staying neutral for months, and the latest University of Houston poll has Paxton at 48% to Cornyn's 45%, inside the margin of error. Ken Paxton has a 100.0% chance of winning. Spending has surpassed $122 million for this intraparty battle, a tight race between the traditional GOP establishment and the MAGA wing. In the governor's race, incumbent Greg Abbott won the Republican primary while state Rep. Gina Hinojosa earned the Democratic nod. Our Paxton vs. Cornyn odds tracker aggregates live public pricing from Kalshi and Polymarket, updated hourly.

Largest Spread
0.00%
Current Favorite
100.0%
Ken Paxton
30D Volume (Share)
K: — P: —
Momentum Leader
7D change

Texas Republican Senate Odds: Kalshi vs. Polymarket

Current probabilities across platforms with liquidity indicators

Sort:
KP
Ken Paxton
Vol Spread
Agg 100.0%
Settled
P 100.0%
Polymarket 100.0%
99.9–100¢
JC
John Cornyn
Vol Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
0.1¢
Outcome Aggregated Spread Volume Kalshi Polymarket
KP
Ken Paxton
100.0%
Settled
Kalshi
Vol $0
Polymarket 100.0%
99.9–100¢
JC
John Cornyn
0.0%
Settled
Kalshi
Vol $0
Polymarket 0.0%
0.1¢

Probability Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Odds on Georgia Primary Senate Republican Winner

Current probabilities across platforms with liquidity indicators

Sort:
BR
Brad Raffensperger
Vol $0 Spread
Agg 0.0%
K 0.0%
BK
Brian Kemp
Vol $0 Spread
Agg 0.0%
K 0.0%
BC
Buddy Carter
Vol $0 Spread
Agg 0.0%
K 0.0%
JK
John King
Vol $0 Spread
Agg 0.0%
K 0.0%
MTG
Marjorie Taylor-Greene
Vol $0 Spread
Agg 0.0%
K 0.0%
RM
Rich McCormick
Vol $0 Spread
Agg 0.0%
K 0.0%
MC
Mike Collins
Vol $0 Spread
Agg 100.0%
Settled
P 100.0%
Polymarket 100.0%
Vol $0 99.9–100¢
CLC
Christina Loren Clement
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
CLF
Christoph La'Flare Chapman
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
DD
Derek Dooley
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
EC
Earl Carter
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
JM
Jonathan McColumn
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
RB
Reagan Box
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
RT
Rick Temple
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
VW
Vinson Watkins
Vol $0 Spread
Agg 0.0%
Settled
P 0.0%
Polymarket 0.0%
Vol $0 0.1¢
Outcome Aggregated Spread Volume Kalshi Polymarket
BR
Brad Raffensperger
0.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
BK
Brian Kemp
0.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
BC
Buddy Carter
0.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
JK
John King
0.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
MTG
Marjorie Taylor-Greene
0.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
RM
Rich McCormick
0.0%
$0
Kalshi 0.0%
Vol $0
Polymarket
MC
Mike Collins
100.0%
Settled
$0
Kalshi
Vol $0
Polymarket 100.0%
99.9–100¢ Vol $0
CLC
Christina Loren Clement
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
CLF
Christoph La'Flare Chapman
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
DD
Derek Dooley
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.1¢ Vol $0
EC
Earl Carter
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
JM
Jonathan McColumn
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
RB
Reagan Box
0.0%
Settled
$0
Kalshi
Vol $0
Polymarket 0.0%
0.1¢ Vol $0
RT
Rick Temple
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0
VW
Vinson Watkins
0.0%
Settled
$0
Kalshi
Polymarket 0.0%
0.1¢ Vol $0

Florida Republican Governor Primary Odds: Byron Donalds at 100.0% to Win

LIVE
Updated 7 minutes ago · 7:48 AM PDT

With Florida's Republican governor primary four days away, Byron Donalds is the overwhelming favorite at 100.0% across Kalshi, Polymarket, Polymarket US, and Gemini. Casey DeSantis is the nearest challenger at 0.0%, while Charles Burkett sits at 0.0%. The market has drawn $0 in tracked trading volume. DeFi Rate aggregates live odds from the four exchanges and refreshes this market hourly as the August 18 primary approaches.

Largest Spread
0.00%
Byron Donalds → View arbs
Current Favorite
100.0%
Byron Donalds
24H Volume (Share)
$0
K: — P: — U: — G: —
Momentum Leader
YTD change

Top prediction apps to trade on Florida Republican Primary race

Current Odds Snapshot

Current probabilities across platforms with liquidity indicators

Sort:
BD
Byron Donalds
Vol $0 Spread 0.0%
Agg 100.0%
Settled
K 100.0%
P 100.0%
U 100.0%
Kalshi 100.0%
Vol $0 0–100¢
Polymarket 100.0%
Vol $0 99.9–100¢
Polymarket US 100.0%
Vol $0 100¢
CD
Casey DeSantis
Vol $0 Spread 0.0%
Agg 0.0%
Settled
K 0.0%
P 0.0%
Kalshi 0.0%
Vol $0 0–100¢
Polymarket 0.0%
Vol $0 0.1¢
CB
Charles Burkett
Vol $0 Spread
Agg 0.0%
Settled
K 0.0%
Kalshi 0.0%
Vol $0 0–100¢
JF
James Fishback
Vol $0 Spread 0.0%
Agg 0.0%
Settled
K 0.0%
P 0.0%
U 0.0%
Kalshi 0.0%
Vol $0 0–100¢
Polymarket 0.0%
Vol $0 0.1¢
Polymarket US 0.0%
Vol $0
JC
Jay Collins
Vol $0 Spread 0.0%
Agg 0.0%
Settled
K 0.0%
P 0.0%
U 0.0%
Kalshi 0.0%
Vol $0 0–100¢
Polymarket 0.0%
Vol $0 0.1¢
Polymarket US 0.0%
Vol $0
JP
Jimmy Patronis
Vol $0 Spread 0.0%
Agg 0.0%
Settled
K 0.0%
P 0.0%
Kalshi 0.0%
Vol $0 0–100¢
Polymarket 0.0%
Vol $0 0.1¢
MG
Matt Gaetz
Vol $0 Spread 0.0%
Agg 0.0%
Settled
K 0.0%
P 0.0%
Kalshi 0.0%
Vol $0 0–100¢
Polymarket 0.0%
Vol $0 0.1¢
PR
Paul Renner
Vol $0 Spread
Agg 0.0%
Settled
K 0.0%
Kalshi 0.0%
Vol $0 0–100¢
WS
Wilton Simpson
Vol $0 Spread 0.0%
Agg 0.0%
Settled
K 0.0%
P 0.0%
Kalshi 0.0%
Vol $0 0–100¢
Polymarket 0.0%
Vol $0 0.1¢
Outcome Aggregated Spread Volume Kalshi Polymarket Polymarket US Gemini
BD
Byron Donalds
100.0%
Settled
0.0%
$0
Kalshi 100.0%
0–100¢ Vol $0
Polymarket 100.0%
99.9–100¢ Vol $0
Polymarket US 100.0%
100¢ Vol $0
Gemini
Vol $0
CD
Casey DeSantis
0.0%
Settled
0.0%
$0
Kalshi 0.0%
0–100¢ Vol $0
Polymarket 0.0%
0.1¢ Vol $0
Polymarket US
Gemini
Vol $0
CB
Charles Burkett
0.0%
Settled
$0
Kalshi 0.0%
0–100¢ Vol $0
Polymarket
Polymarket US
Gemini
JF
James Fishback
0.0%
Settled
0.0%
$0
Kalshi 0.0%
0–100¢ Vol $0
Polymarket 0.0%
0.1¢ Vol $0
Polymarket US 0.0%
Vol $0
Gemini
Vol $0
JC
Jay Collins
0.0%
Settled
0.0%
$0
Kalshi 0.0%
0–100¢ Vol $0
Polymarket 0.0%
0.1¢ Vol $0
Polymarket US 0.0%
Vol $0
Gemini
Vol $0
JP
Jimmy Patronis
0.0%
Settled
0.0%
$0
Kalshi 0.0%
0–100¢ Vol $0
Polymarket 0.0%
0.1¢ Vol $0
Polymarket US
Gemini
MG
Matt Gaetz
0.0%
Settled
0.0%
$0
Kalshi 0.0%
0–100¢ Vol $0
Polymarket 0.0%
0.1¢ Vol $0
Polymarket US
Gemini
PR
Paul Renner
0.0%
Settled
$0
Kalshi 0.0%
0–100¢ Vol $0
Polymarket
Polymarket US
Gemini
WS
Wilton Simpson
0.0%
Settled
0.0%
$0
Kalshi 0.0%
0–100¢ Vol $0
Polymarket 0.0%
0.1¢ Vol $0
Polymarket US
Gemini

Byron Donalds Probability to Win Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

Outcome Venue Pair Leg A (Buy) Leg B (Sell) Gross Spread After Fees Actionable Trade Now
BD
Byron Donalds
Kalshi Polymarket US
Buy @ K
100¢
Sell @ U
100¢
+0.00%
+0.00%
No
JF
James Fishback
Polymarket US Kalshi
Buy @ U
Sell @ K
+0.00%
+0.00%
No
JC
Jay Collins
Polymarket US Kalshi
Buy @ U
Sell @ K
+0.00%
+0.00%
No
CD
Casey DeSantis
Polymarket Kalshi
Buy @ P
0.1¢
Sell @ K
-0.10%
-0.10%
No
JP
Jimmy Patronis
Polymarket Kalshi
Buy @ P
0.1¢
Sell @ K
-0.10%
-0.10%
No
MG
Matt Gaetz
Polymarket Kalshi
Buy @ P
0.1¢
Sell @ K
-0.10%
-0.10%
No
WS
Wilton Simpson
Polymarket Kalshi
Buy @ P
0.1¢
Sell @ K
-0.10%
-0.10%
No

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
BD
Byron Donalds
CD
Casey DeSantis
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
CB
Charles Burkett
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
JF
James Fishback
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
JC
Jay Collins
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
JP
Jimmy Patronis
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
MG
Matt Gaetz
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
PR
Paul Renner
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
WS
Wilton Simpson
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
CD
Casey DeSantis
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
JF
James Fishback
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
JC
Jay Collins
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
JP
Jimmy Patronis
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
MG
Matt Gaetz
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
WS
Wilton Simpson
Polymarket
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
JF
James Fishback
Polymarket US
A
100.0%
B
0.0%
+100.00%
Buy spread
BD
Byron Donalds
JC
Jay Collins
Polymarket US
A
100.0%
B
0.0%
+100.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Polymarket: Market data via their API (token prices + best bid/ask + 24H volume/liquidity when available).

Polymarket US: Gateway market data (yes/no prices + best bid/ask + market stats for volume/open interest where available).

Gemini: Public Prediction Markets + ticker endpoints (best bid/ask + last + 24H USD volume when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

South Carolina Republican Senate Special Primary Odds: Darline Graham Leads

LIVE
Updated 6 minutes ago · 7:49 AM PDT

South Carolina’s Republican Senate special primary remains unresolved after the initial field narrowed. Darline Graham currently leads at 100.0%, with Ralph Norman at 0.0%. DeFi Rate aggregates live Kalshi pricing through the runoff and certification process.

Largest Spread
0.00%
Current Favorite
100.0%
Darline Graham
30D Volume (Share)
$7.3M
K: 100.0%
Momentum Leader
YTD change

Top prediction apps to trade on the South Carolina Senate primary

Current South Carolina Republican Senate Primary Odds

Current probabilities across platforms with liquidity indicators

Sort:
DG
Darline Graham
Vol $4.0M Spread
Agg 100.0%
Settled
K 100.0%
Kalshi 100.0%
Vol $4.0M 0–100¢
RN
Ralph Norman
Vol $3.3M Spread
Agg 0.0%
Settled
K 0.0%
Kalshi 0.0%
Vol $3.3M 0–100¢
Outcome Aggregated Spread Volume Kalshi
DG
Darline Graham
100.0%
Settled
$4.0M
Kalshi 100.0%
0–100¢ Vol $4.0M
RN
Ralph Norman
0.0%
Settled
$3.3M
Kalshi 0.0%
0–100¢ Vol $3.3M

South Carolina Republican Senate Primary Odds Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

No cross-venue pairs available for this event.

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
DG
Darline Graham
RN
Ralph Norman
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

James Fishback Florida Primary Vote Share Odds

LIVE
Updated 6 minutes ago · 7:49 AM PDT

This threshold board tracks James Fishback’s certified vote share in Florida’s August 18 Republican governor primary. At least 1% is currently priced at 100.0%, with the remaining thresholds showing how traders price each vote-share level. DeFi Rate aggregates live Kalshi pricing until the primary vote is certified.

Largest Spread
0.00%
Current Favorite
100.0%
At least 1%
30D Volume (Share)
$32.0K
K: 100.0%
Momentum Leader
YTD change

Top prediction apps to trade on the Florida governor primary

James Fishback Florida Primary Vote Share Odds

Current probabilities across platforms with liquidity indicators

Sort:
AL1
At least 1%
Vol $113 Spread
Agg 100.0%
Settled
K 100.0%
Kalshi 100.0%
Vol $113 0–100¢
AL1
At least 10%
Vol $38 Spread
Agg 100.0%
Settled
K 100.0%
Kalshi 100.0%
Vol $38 0–100¢
AL3
At least 3%
Vol $50 Spread
Agg 100.0%
Settled
K 100.0%
Kalshi 100.0%
Vol $50 0–100¢
AL5
At least 5%
Vol $105 Spread
Agg 100.0%
Settled
K 100.0%
Kalshi 100.0%
Vol $105 0–100¢
AL6
At least 6%
Vol $35 Spread
Agg 100.0%
Settled
K 100.0%
Kalshi 100.0%
Vol $35 0–100¢
AL7
At least 7%
Vol $54 Spread
Agg 100.0%
Settled
K 100.0%
Kalshi 100.0%
Vol $54 0–100¢
AL8
At least 8%
Vol $37 Spread
Agg 100.0%
Settled
K 100.0%
Kalshi 100.0%
Vol $37 0–100¢
AL9
At least 9%
Vol $25 Spread
Agg 100.0%
Settled
K 100.0%
Kalshi 100.0%
Vol $25 0–100¢
AL1
At least 11%
Vol $547 Spread
Agg 0.0%
Settled
K 0.0%
Kalshi 0.0%
Vol $547 0–100¢
AL1
At least 12%
Vol $216 Spread
Agg 0.0%
Settled
K 0.0%
Kalshi 0.0%
Vol $216 0–100¢
AL1
At least 13%
Vol $79 Spread
Agg 0.0%
Settled
K 0.0%
Kalshi 0.0%
Vol $79 0–100¢
AL1
At least 14%
Vol $101 Spread
Agg 0.0%
Settled
K 0.0%
Kalshi 0.0%
Vol $101 0–100¢
AL1
At least 15%
Vol $196 Spread
Agg 0.0%
Settled
K 0.0%
Kalshi 0.0%
Vol $196 0–100¢
AL2
At least 20%
Vol $30.3K Spread
Agg 0.0%
Settled
K 0.0%
Kalshi 0.0%
Vol $30.3K 0–100¢
AL3
At least 30%
Vol $154 Spread
Agg 0.0%
Settled
K 0.0%
Kalshi 0.0%
Vol $154 0–100¢
Outcome Aggregated Spread Volume Kalshi
AL1
At least 1%
100.0%
Settled
$113
Kalshi 100.0%
0–100¢ Vol $113
AL1
At least 10%
100.0%
Settled
$38
Kalshi 100.0%
0–100¢ Vol $38
AL3
At least 3%
100.0%
Settled
$50
Kalshi 100.0%
0–100¢ Vol $50
AL5
At least 5%
100.0%
Settled
$105
Kalshi 100.0%
0–100¢ Vol $105
AL6
At least 6%
100.0%
Settled
$35
Kalshi 100.0%
0–100¢ Vol $35
AL7
At least 7%
100.0%
Settled
$54
Kalshi 100.0%
0–100¢ Vol $54
AL8
At least 8%
100.0%
Settled
$37
Kalshi 100.0%
0–100¢ Vol $37
AL9
At least 9%
100.0%
Settled
$25
Kalshi 100.0%
0–100¢ Vol $25
AL1
At least 11%
0.0%
Settled
$547
Kalshi 0.0%
0–100¢ Vol $547
AL1
At least 12%
0.0%
Settled
$216
Kalshi 0.0%
0–100¢ Vol $216
AL1
At least 13%
0.0%
Settled
$79
Kalshi 0.0%
0–100¢ Vol $79
AL1
At least 14%
0.0%
Settled
$101
Kalshi 0.0%
0–100¢ Vol $101
AL1
At least 15%
0.0%
Settled
$196
Kalshi 0.0%
0–100¢ Vol $196
AL2
At least 20%
0.0%
Settled
$30.3K
Kalshi 0.0%
0–100¢ Vol $30.3K
AL3
At least 30%
0.0%
Settled
$154
Kalshi 0.0%
0–100¢ Vol $154

James Fishback Vote Share Probabilities Over Time

Hover for details · Cursor-synced tooltips

Tap "Chart settings" to adjust the chart.

Period:
Platform:
Chart settings
Mode:
Average:
Outcome:
Visible lines Aggregated · VWAP · All platforms
Loading lines...

Arbitrage Scanner

Current cross-venue opportunities with fee calculations

Minimum Spread 1.5%

Pairs (Venue-to-Venue)

No cross-venue pairs available for this event.

Outcome Diff

Outcome A Outcome B Venue A Odds B Odds Diff Strategy Trade Now
AL1
At least 1%
AL1
At least 11%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL1
At least 1%
AL1
At least 12%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL1
At least 10%
AL1
At least 11%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL1
At least 10%
AL1
At least 12%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL3
At least 3%
AL1
At least 11%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL3
At least 3%
AL1
At least 12%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL5
At least 5%
AL1
At least 11%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL5
At least 5%
AL1
At least 12%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL6
At least 6%
AL1
At least 11%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL6
At least 6%
AL1
At least 12%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL7
At least 7%
AL1
At least 11%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL7
At least 7%
AL1
At least 12%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL8
At least 8%
AL1
At least 11%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL8
At least 8%
AL1
At least 12%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL9
At least 9%
AL1
At least 11%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
AL9
At least 9%
AL1
At least 12%
Kalshi
A
100.0%
B
0.0%
+100.00%
Buy spread
Kalshi Trading Fee 1% (min $0.07, max $1.75) per side
Polymarket Trading Fee 0% (gas only)
Gemini Trading Fee 0.40% per side
Polymarket US Trading Fee 0% (gas only)

After-fee spreads apply the configured taker-fee model per side. Depth/slippage is not modeled in this scanner.

Methodology & Data Mapping

How we aggregate, normalize, and map cross-platform data

Aggregation Method

Default: Volume-Weighted Average Price (VWAP)

Weights each mapped market by its reported 24H USD volume at snapshot time. If volume is unavailable, we fall back to a simple average for that snapshot.

Use the VWAP/Simple toggle above the chart to switch aggregation views.

Data Sources & Cadence

Kalshi: Official API (best bid/ask + last + 24H volume/liquidity when available).

Event data is updated hourly. Older history is downsampled.

Outcome Mapping

Each event links one or more markets per provider. We normalize labels, map provider outcomes into a shared outcome list, and merge mapped markets where appropriate.

Spread & Liquidity

Cross-venue spread: Max–min difference across available venue probabilities for the same outcome.

Liquidity: Relative per-venue indicators based on provider liquidity fields (no depth/slippage modeling).

Arbitrage: Computed from best bid/ask when available (otherwise mid); after-fee spread applies the configured fee model only.

How to bet on the 2026 US midterm elections

Author ... Cheryle Shepstone
Cheryle Shepstone
Director of Content

Cheryle is Director of Content and Strategy at DeFi Rate. She oversees the prediction market research, platform reviews, and editorial methodology behind every guide—from primary source verification through final fact-ch...

Editor ... Pat Evans
Pat Evans
Political and Legislation Reporter

Pat Evans has nearly two decades of experience covering complex industries. Before joining Defi Rate in 2026, he spent more than 15 years writing about sports betting, food and beverage, construction, health care and spo...

If you want to bet on the 2026 US midterms, prediction markets let you put money on outcomes ranging from which party controls the House and Senate to individual Senate races, House seats, governors and other election results. Kalshi, Polymarket US and Gemini all have US election markets available for the 2026 cycle.

You'll see people call these election bets, odds, contracts or trades. The terminology changes depending on the platform, but the idea is fairly easy to follow. You choose an election outcome, buy it at the current market price and either sell the position later or hold it until the market settles.

Prices also give you a quick read on what traders think is likely to happen. If a candidate is trading at 60¢, that translates to roughly a 60% chance according to the market. If you think the real probability is higher or lower, you can take a position accordingly.

2026 midterm betting at a glance

  • What you can bet on: House control, Senate control, individual races, governors, seat totals, margins and other election outcomes.
  • Where you can trade: Kalshi, Polymarket US and Gemini are among the US platforms offering political markets.
  • How pricing works: A contract trading at 60¢ represents roughly a 60% market probability.
  • Winning payout: A correct contract typically settles at $1; an incorrect one settles at $0.
  • Before Election Day: You generally don't have to hold until settlement. Positions can be sold earlier when there is a market for them.

How election betting works

Most election markets are built around a straightforward question. It might be "Which party will win the US Senate?", "Will James Talarico win the Texas Senate election?" or "Which party will control both chambers of Congress?" Those types of 2026 contracts are already trading.

On platforms such as Kalshi and Gemini, contracts generally trade between $0 and $1. If the contract you hold settles as correct, it pays $1. If it settles as incorrect, it pays $0.

Take the Texas Senate race as a working example. Suppose James Talarico is trading at 60¢ when you place your trade. If you buy 100 contracts, the position costs $60. If Talarico wins and your contracts settle at $1 each, you receive $100, leaving a $40 profit before fees. If he loses, those contracts settle at $0 and the $60 you spent on the position is lost.

You could also decide not to wait for the election. Suppose you bought at 60¢ and the price later climbed to 75¢. If there are buyers available, you could sell the position at the prevailing price and take the difference rather than waiting for the final result. That ability to move in and out of a position is one reason election-market users often talk about what they're doing as both betting and trading.

How to use our midterm odds

Our 2026 Midterms Oddsboard is built to save you from opening several prediction-market apps and searching for the same election on each one.

The board organizes markets into National, House, Senate, Governors and Primaries. You can start with the national picture - such as control of Congress - or move directly into an individual race.

Each market card shows the available outcomes and the prices we can match across the prediction markets we track.

  • Outcome: The candidate, party or result the contract is tied to.
  • Platform prices: You can see how the same outcome is priced on exchanges such as Kalshi, Polymarket US and other supported venues when a comparable contract is available.
  • Search: Type a candidate, state or race to narrow the board rather than scrolling through every election market.
  • Expanded markets: Markets with a large field of candidates or outcomes can be opened to see the rest of the available choices.

This becomes particularly useful when two prediction markets don't agree. A candidate might be priced at 58¢ on one exchange and 61¢ on another. We keep those numbers separate instead of averaging them into one number. You can see where each market is trading and decide which price is relevant to you.

Some elections will only appear on one exchange. Others, particularly larger Senate or national markets, can be available across several venues.

Where our midterm odds come from

We use first-party exchange data from the prediction markets we track. We don't create the election probabilities ourselves, and we don't adjust a price because our editorial team thinks a candidate is more or less likely to win.

We keep venue-level pricing identifiable instead of turning several exchange prices into one editorial forecast. That means when Kalshi, Polymarket US or another supported market shows a different price, you can see the difference rather than an average that hides it.

Our Midterms Oddsboard refreshes prices regularly throughout the day. Because these are live markets, the price you see on our board can move before you reach the exchange, particularly around a new poll, primary result, debate, endorsement or other campaign news.

There is another reason we keep the exchanges separate: not every platform structures an apparently similar election market in exactly the same way. Before placing a trade, open the underlying market and read its settlement rules.

How to trade on the US midterm elections

Once you find a market you want to trade, the process is usually only a few steps.

  1. Find the race on our oddsboard. Search for the candidate, state or election you want to follow and compare the available prices.
  2. Choose the market. Look at which exchanges list the outcome and the price available on each one.
  3. Open the underlying contract. Before putting money down, check the wording of the market and its settlement rules.
  4. Choose your position. Depending on the market, you may be buying Yes or No, choosing a candidate, selecting a party or picking from several possible outcomes.
  5. Enter your amount. The platform will show the cost of the position and its potential payout before you submit the order.
  6. Hold or sell. You can keep the position through settlement or try to sell earlier at the available market price.

One thing that catches newer users is that the number you see on screen isn't always the exact price at which a large order will fill. These are markets with buyers and sellers. In a thinner election market, there may only be a limited number of contracts available at the quoted price.

Kalshi, for example, describes its market as matching participants taking different sides of a contract, with makers posting orders and takers accepting them. See Kalshi's explanation

Why election odds are different on Kalshi, Polymarket US and Gemini

There is no requirement for the different prediction markets to show the same price. Kalshi might have a candidate at 58%, while another exchange has the same outcome at 61%. Different traders, order books, liquidity and available prices can create a gap between them.

That doesn't necessarily mean one exchange has the "correct" number. It simply means participants are currently willing to trade the outcome at different prices.

This is where comparing markets becomes useful. Rather than seeing "Candidate A: 60%" with no context, our board lets you see the individual exchange prices behind that number.

Liquidity matters too. A heavily traded national market can have tight pricing and plenty of contracts available. A smaller House race may have fewer participants, a wider spread and larger price movements when someone places a substantial order.

What can you bet on during the 2026 midterms?

The 2026 election market is much broader than simply betting on whether Democrats or Republicans win Congress. Current exchanges carry markets covering House control, Senate control, balance of power, individual House and Senate winners, governor races, seat totals and other outcomes.

  • House control: Which party controls the House after the election.
  • Senate control: Which party controls the Senate.
  • Balance of power: The combination of parties controlling the House and Senate.
  • Individual races: Who wins a specific House or Senate seat.
  • Governor races: Which candidate wins a state's gubernatorial election.
  • Seat totals: How many seats a party will hold after the midterms.
  • Margins: The winning margin or national House popular-vote margin.
  • Primaries: Who wins a party nomination before the general election.

For example, Kalshi's current midterms hub includes House and Senate control alongside individual races, while Polymarket US lists national balance-of-power markets and state-level election contracts.

Election odds can move quickly

You aren't locking in a permanent probability when you buy a contract. If you pay 45¢ today, the same outcome might trade at 35¢ or 70¢ later. Polling, campaign news, fundraising, withdrawals, court decisions, primary results and activity within the market itself can all move the price.

That's also why you should separate price from result. A contract moving from 40¢ to 60¢ does not mean the election is decided. It means the market price has changed as buyers and sellers reassess the outcome.

Read the rules before putting money down

The market title is not enough. Election contracts contain specific rules covering what result counts, which source will be used and when the contract can settle. That becomes important if there is a recount, runoff, tie or delayed certification.

Polymarket US's 2026 balance-of-power market spells out how House and Senate control will be determined and includes rules for independents, runoffs and ambiguous chamber control.

So don't assume a cable-news projection means you've won. The contract settles according to its own rules.

US election betting and prediction market regulation

Election contracts in the US are offered through federally regulated prediction-market exchanges. Kalshi, Gemini Titan and QCX LLC, which operates as Polymarket US, are listed by the CFTC as designated contract markets.

The regulatory path for election markets has been contested. The CFTC disapproved Kalshi's congressional-control contracts in 2023, and a federal district court later vacated that order in 2024. The subsequent appeal was dismissed in 2025.

Those disputes now focus as much on market integrity as access. Ahead of the 2026 elections, CFTC Chair Mike Selig warned that efforts to move political-market prices artificially could trigger manipulation cases. The Senate has barred senators and staff from prediction markets, reflecting concern that officials could profit from information or outcomes they influence.

There are still broader federal-versus-state disputes around prediction markets, and availability can depend on the exchange, product and jurisdiction. For the reader, the practical point is simpler: check whether the specific platform and market are available to you before funding an account.

FAQ

Can you bet on the 2026 US midterm elections?

Yes. Prediction markets currently offer real-money contracts on the 2026 US midterms, including control of the House and Senate, individual congressional races, governors and other election outcomes.

Where can I bet on the 2026 midterms?

US election markets are available through platforms including Kalshi, Polymarket US and Gemini Predictions. The exact races and contracts available differ by platform.

How do midterm election odds work?

A contract trading at 60¢ can be read as roughly a 60% market probability. If a qualifying contract settles correctly, it pays $1; otherwise it settles at $0.

How much would I win on a $60 election bet at 60¢?

At 60¢ per contract, $60 buys 100 contracts. If those contracts settle at $1, you receive $100 and make $40 before fees. If the outcome loses, the contracts settle at $0.

Can I cash out an election bet early?

You can generally sell a prediction-market position before the contract resolves, assuming there is enough liquidity and someone willing to take the other side at the available price.

Why are Kalshi and Polymarket election odds different?

Each exchange has its own participants and order book. Differences in liquidity, buying and selling activity and available orders can result in different prices for the same political outcome.

Are election prediction market odds the same as polls?

No. A poll measures responses from a sample of voters. A prediction-market price reflects where participants are currently willing to buy and sell a contract tied to the election outcome. A candidate trading at 60¢ does not mean 60% of voters support that candidate.

Do I have to wait until Election Day to make money?

No. If the market price moves after you enter the position, you may be able to sell before the election and realize a gain or loss. Your ability to exit, and the price you receive, depends on available liquidity.

What happens if an election goes to a runoff?

It depends on the contract. Some election markets explicitly include any applicable runoff, tiebreak or other procedure in determining the winner. Always check the individual market rules before trading.

What happens if there is a recount?

The exchange follows the resolution conditions written into the contract, including its specified official source. This can mean settlement takes longer when an election result is not yet final.

Do we set the election odds shown on our Midterms Oddsboard?

No. We aggregate first-party pricing from the prediction markets we track and display the venue-level prices so you can compare them in one place.

How often are our midterm odds updated?

Our Midterms Oddsboard is updated hourly, so the numbers can change throughout the day as the underlying prediction markets move. Always check the live exchange price before placing an order.

Latest election news

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More than $5.7 million has traded across Kalshi and Polymarket on Michigan’s open Senate race, with both platforms putting Abdul El-Sayed in the low- to mid-60s. But a new Detroit-area poll gives Republican Mike Rogers a narrow lead, underscoring how far prediction-market confidence has moved ahead of the conventional view in a race central to Senate control.

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US Elections

Over $106M Has Been Traded on LA’s Mayor Race as Bass Holds a Narrowing Edge

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US Elections

AOC and Ossoff Overtake Newsom in 2028 Democratic Presidential Nominee Prediction Markets as Money Floods In

The 2028 Democratic primary market is becoming a three-way race, but Gavin Newsom is no longer leading it. With $194 million now traded on Kalshi and nearly $1.3 billion on Polymarket, Alexandria Ocasio-Cortez and Jon Ossoff have surged past the California governor, an early sign that traders are pricing a Democratic future less defined by the old establishment and more by the party’s progressive and battleground-state wings.

US Elections

Prediction Markets Call Trump Candidate Wins In South Carolina and Oklahoma Runoffs, Margins Show His Grip Still Has Limits

Trump-backed Darline Graham Nordone and Mike Mazzei both won Tuesday’s Republican runoffs, validating the markets that continued to price each as the favorite after shaky first-round performances. But Graham’s earlier failure to clear 50% in deep-red South Carolina, and Mazzei’s 0.6-point Oklahoma win after finishing second in the first round, show that Trump’s endorsement remains powerful without making his candidates invincible.