DeFi RateApp Offers

2028 Democratic Presidential Nominee OddsAlexandria Ocasio-Cortez and Jon Ossoff are level at 16%

Kalshi has Alexandria Ocasio-Cortez at 14% and Polymarket at 18%. Over the past week on Kalshi, Jon Ossoff and Kamala Harris gained the most, 1 point each.

Joint favorite on average
16%Alexandria Ocasio-Cortez

About 1 in 6Unchanged this week (Kalshi)

Average of Kalshi (14%) and Polymarket (18%).

Prices to buy now. $100 on Kalshi at the ask pays $714 if correct, before fees.

Joint favorite on average
16%Jon Ossoff

About 1 in 6 Up 1 pt this week (Kalshi)

Average of Kalshi (17%) and Polymarket (15%).

Prices to buy now. $100 on Polymarket at the ask pays $666 if correct, before fees.

Kalshi and Polymarket

2028 Democratic presidential nominee

24h volume
$214Kcombined

Kalshi: $171K (80%) · Polymarket: $43K (20%)

Trading closes
Nov 7, 2028

Kalshi: Nov 7, 2028 · Polymarket: Nov 7, 2028

Prices to buy each outcome, or the last trade where no one is selling. Some quotes are stale: they weren't observed recently and may have moved. Tap a price to open Kalshi and Polymarket.

2028 Democratic presidential nominee: Kalshi and Polymarket odds, observed between Oct 5, 6:08 PM and 10:32 PM ET
OutcomeAverageKalshiPolymarketSources
Alexandria Ocasio-Cortez16%Kalshi14¢Lowest askPolymarket18¢
Jon Ossoff16%Kalshi17¢Polymarket15¢Lowest ask
Gavin Newsom15%Kalshi14¢Lowest askPolymarket16¢
Kamala Harris7.7%Kalshi8.6¢Polymarket7¢
Josh Shapiro5.3%Kalshi4.7¢Lowest askPolymarket6¢
Pete Buttigieg5.1%Kalshi5.1¢Polymarket5.1¢
Andy Beshear4.3%Kalshi5.7¢Polymarket2.8¢
Mark Kelly3.4%Kalshi4.2¢Polymarket2.7¢
James Talarico2.9%Kalshi3¢Lowest askPolymarket3.1¢
Rahm Emanuel2.3%Kalshi3.1¢Polymarket1.8¢

Kalshi: OpenPolymarket: Open Average is the mean of each venue's price for the outcome, where it lists one (a quote more than two hours old is left out while another venue's is newer): the midpoint of Kalshi's bid and ask, or its last trade; Polymarket's displayed price, or the midpoint of its bid and ask. Source: Kalshi / Polymarket via DeFi Rate, observed between Oct 5, 6:08 PM and 10:32 PM ET.

The leading six, venue by venueobserved between Oct 5, 10:04 PM and 10:32 PM ET
0%5%10%15%20%25%KalshiPolymarketOur figureOcasio-Cortez16%Jon Ossoff16%Gavin Newsom15%Kamala Harris7.7%Josh Shapiro5.3%Buttigieg5.1%

The widest gap is on Alexandria Ocasio-Cortez: Kalshi 14% and Polymarket 18%. Our figure is their average.

Price history · Kalshi daily closeAug 5 – Oct 5

Over the past week on Kalshi, Jon Ossoff and Kamala Harris gained the most, 1 point each.

0510152025SepOct14%17%14%8%5%
Alexandria Ocasio-CortezJon OssoffGavin NewsomKamala HarrisJosh Shapiro

Source: Kalshi daily close via DeFi Rate, Aug 5 to Oct 5 (UTC days). A day without a close is left out.

Market moves

Biggest moves, last 7 days

Kamala Harris2028 Democratic presidential nominee · Kalshi daily close
7% → 8%
+1 pt
Jon Ossoff2028 Democratic presidential nominee · Kalshi daily close
16% → 17%
+1 pt

Change in percentage points over 7 days, from daily closing prices to the latest observation (Oct 5, 10:30 PM ET).