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55-64 47.5%
Next is Under 45 at 38.5%. The venues list this event, but none of their outcomes are matched yet, so prices are shown separately.
Consensus blends each venue’s last price, weighted by how much has traded there. 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.
17 of 58 prices are live from the exchange feeds; the rest come from our regular price polls, the oldest 4 min ago. Ages are as of when this page was built.
The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.
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.
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Kalshi doesn’t list 55-64 for this event.
Enter a stake to see where it buys the most after fees, using each venue’s live order book.
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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 "Age of 2028 Democratic Presidential Nominee?". 55-64 leads at 47.5%. Next is Under 45 at 38.5%. $245.9M has traded across 58 outcomes on Kalshi and Polymarket. The market is expected to resolve by Aug 31, 2028.
This market will resolve according to the age of the individual who formally wins and accepts the 2028 nomination of the Democratic Party for U.S. president. The individual's age will be calculated on the day on which they accept the nomination. A person will be considered to have advanced from one age to the next immediately upon the beginning of the calendar day of their day of birth. In the event that no individual has won and accepted such nomination by November 7, 2028, this market will resolve to the lowest listed bracket. Any replacement of the nominee before election day will not change the resolution of the market. The resolution source for this market will be a consensus of official Democratic Party sources and official public records; however, a consensus of credible sources may suffice.
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.