Combined depth · both venues
Loading both order books…
Alexandria Ocasio-Cortez 16%
Next is Jon Ossoff at 15.7%. The venues differ most on Alexandria Ocasio-Cortez (Polymarket 16.8%, Kalshi 14%), a 2.7-point gap.
Fair chance strips out each venue’s built-in margin (its prices add up to more than 100%), then blends the venues by how much has traded there, so the outcomes add up to 100%. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.
18 of 105 prices are live from the exchange feeds; the rest come from our regular price polls, the oldest 58 min ago. Ages are as of when this page was built.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Kalshi at 14¢ and selling on Polymarket at 16.6¢ nets 260 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 15¢, at or below the cheapest ask of 15.3¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 14.4¢, at or below the cheapest ask of 15¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 6.6¢ and selling on Kalshi at 7.5¢ nets 90 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Kalshi at 4.6¢ and selling on Polymarket at 5.1¢ nets 50 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Kalshi at 4.7¢ and selling on Polymarket at 4.8¢ nets 10 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 3.3¢ and selling on Kalshi at 5¢ nets 170 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Kalshi at 2.6¢ and selling on Polymarket at 2.7¢ nets 10 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 2.1¢ and selling on Kalshi at 3.6¢ nets 150 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 2.1¢ and selling on Kalshi at 2.2¢ nets 10 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 1.6¢ and selling on Kalshi at 2.6¢ nets 100 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 1.9¢ and selling on Kalshi at 2¢ nets 10 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 1.4¢ and selling on Kalshi at 2.6¢ nets 120 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 1.4¢, at or below the cheapest ask of 1.4¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Kalshi at 0.5¢ and selling on Polymarket at 1.3¢ nets 80 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.7¢, at or below the cheapest ask of 0.7¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 0.4¢ and selling on Kalshi at 1.7¢ nets 130 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 0.6¢ and selling on Kalshi at 0.7¢ nets 10 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Kalshi at 0.3¢ and selling on Polymarket at 0.5¢ nets 20 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 0.4¢ and selling on Kalshi at 0.5¢ nets 10 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 0.2¢ and selling on Kalshi at 0.4¢ nets 20 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 0.3¢ and selling on Kalshi at 0.7¢ nets 40 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 0.4¢ and selling on Kalshi at 0.6¢ nets 20 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.2¢, at or below the cheapest ask of 0.3¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.2¢, at or below the cheapest ask of 0.3¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.4¢, at or below the cheapest ask of 0.4¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: Buying on Polymarket at 0.2¢ and selling on Kalshi at 0.4¢ nets 20 bps before fees.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 0.1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 0.1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 0.1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 0.1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 0.1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 0.1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 0.1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 0.1¢.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.
Indicative only, prices are 58 min old: No arbitrage: the best bid elsewhere is 0.1¢, at or below the cheapest ask of 0.2¢.
Indicative gap, prices are 58 min old: Alexandria Ocasio-Cortez asks 14¢ on Kalshi and bids 16.6¢ on Polymarket (260 bps). Recheck both venues before trading. See all spreads
Summarized from each venue’s published rules; the venue’s own rules page is the final word.
The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.
What it costs to buy Yes, what you would get selling it, and the last trade on each exchange, updating as orders change. Hover a status for timing details.
Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.
Loading both order books…
Waiting for the first live quote…
Waiting for the first live quote…
Enter a stake to see where it buys the most after fees, using each venue’s live order book.
Loading both order books…
Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.04 × price × (1 − price) per share (politics rate). Fee calculator. Estimates only, not advice.
Live prediction market odds for "Democratic Presidential Nominee 2028". Alexandria Ocasio-Cortez leads at 16%. Next is Jon Ossoff at 15.7%. $1.5B has traded across 62 outcomes on Polymarket and Kalshi. The market is expected to resolve by Nov 7, 2028.
This market will resolve to “Yes” if the named individual wins and accepts the 2028 nomination of the Democratic Party for U.S. president. Otherwise, this market will resolve to “No”. The resolution source for this market will be a consensus of official Democratic Party sources. Any replacement of the democratic nominee before election day will not change the resolution of the market.
It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.
A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.
Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.
Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.
Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.