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2026 midterms2026 Maine Senate election odds

Compare current market prices for the Maine Senate election, including the candidates, venue differences and contract rules.

Favorite on average
59%Troy Jackson (D)

About 3 in 5 Down 1 pt this week (Kalshi)

Average of Kalshi (59%) and Polymarket (60%).

Prices to buy. Kalshi's quote is stale (observed Oct 4, 9:50 AM ET) and may have moved.

Runner-up on average
41%Susan Collins (R)

About 2 in 5 Down 1 pt this week (Kalshi)

Average of Kalshi (41%) and Polymarket (41%).

Prices to buy. Kalshi's quote is stale (observed Oct 4, 9:57 AM ET) and may have moved.

Every outcome · Kalshi and Polymarket

2026 Maine Senate election odds

Each row is an outcome, with its price to buy. Tap a price to trade it.

2026 Maine Senate election odds: Maine Senate winner? (Kalshi and Polymarket), observed between Oct 4, 9:50 AM and 10:04 AM ET
OutcomeMaine Senate winner?Kalshi and Polymarket
Troy Jackson (D)59%Kalshi59¢Polymarket60¢
Susan Collins (R)41%Kalshi41¢Polymarket41¢

Chance is each venue's price for Yes. Source: Kalshi via DeFi Rate and Polymarket via DeFi Rate, observed between Oct 4, 9:50 AM and 10:04 AM ET.

Market moves

Biggest moves, last 7 days

Troy Jackson (D)Maine Senate winner? · Kalshi daily close
60% → 59%
−1 pt

Change in percentage points over 7 days, from daily closing prices to the latest observation (Oct 4, 9:57 AM ET).

Why Maine matters for Senate control

Maine is one of the races traders watch for a possible change in Senate control. The winner market is about the state election itself, not a direct bet on which party will hold the chamber. Candidate news and new orders can move its price even when the national control market barely changes.

Read each venue's rules

Compare the outcome names and the exact resolution terms before treating two prices as equivalent. A candidate winner contract and a party winner contract may describe related results but are not automatically identical. Check the quote age, available orders and fees before placing a trade. For the national view, see our midterm odds hub and all Senate races.

Maine Senate election questions

Is the Maine Senate winner the same as Senate control?

No. Maine determines one seat; control depends on the full chamber and how the other races resolve.

Why might two exchanges show different Maine odds?

The venues have different orders, liquidity and sometimes different contract wording. Read the rules of each market before comparing prices.

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Source: Kalshi / Novig / Polymarket / Polymarket US / ProphetX / Rothera / Underdog Exchange via DeFi Rate: volume by category as of Oct 4, 9:30 AM ET.