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2028 Republican presidential nominee

Priced on Kalshi and Polymarket at the same moment. These are raw ask prices, what it actually costs to take the position, margin included.

OutcomeKalshiPolymarketCheaper
J.D. Vance 36¢ 38.7¢ Kalshi
Marco Rubio 21¢ 20.9¢ level
Ron DeSantis 4.9¢ 4¢ Polymarket
Donald J. Trump Jr. 3.6¢ –
Tucker Carlson 2.9¢ 3.1¢ level
Brian Kemp 2.5¢ 0.8¢ Polymarket
Ted Cruz 2.4¢ 2.6¢ level
Donald J. Trump 1.8¢ –
Marjorie Taylor Greene 1.4¢ 0.4¢ level
Glenn Youngkin 1.4¢ 1¢ level
Ivanka Trump 1.2¢ 1.6¢ level
Thomas Massie 1¢ 0.8¢ level
Pete Hegseth 1.1¢ 0.4¢ level

The two venues disagree most on J.D. Vance: 36¢ on Kalshi against 38.7¢ on Polymarket, a gap of 2.7¢ on the same outcome.

Only outcomes with a live two-sided quote are shown, and 18 contracts trading under a cent are left off. Polymarket prices are matched to this market by outcome name; where a name has no counterpart the cell is left empty rather than guessed. Prices as of Sun, 01 Nov 2026 09:40:38 UTC.

Your call

The market says 36%. It got there by making everyone who disagreed put money behind it. You do not have to, so this is the cheap version of the same question, and the interesting number is how far the two drift apart.

36%

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The record

What this market has cost every day since 5 February 2026, taken from the exchange's own published history. The line is the mid price, halfway between what a buyer would pay and a seller would take.

0 25 50 75 100 FebMarAprMayJunJulAugSeptOctNov J.D. Vance 35.5 Marco Rubio 20.5 Ron DeSantis 4.9

Over this window J.D. Vance went from 46.5 to 35.5, a move of 11 points away from happening.

The other 1 contract in this field is left off the chart rather than drawn in a colour nobody could tell apart; it is all in the table above. Kalshi removes a contract from its interface once it settles and Polymarket buries closed events, so this page is the copy that stays put. We also record our own snapshot once a day, independently, because a history published by the house is worth checking against one kept by somebody with no position in it.

See this on Kalshi See this on Polymarket

What settles this

Settlement source
Republican Party
Contract terms
Kalshi product certification (PDF)
Closes
Tue, 07 Nov 2028 15:00:00 UTC
Resolution, for the J.D. Vance contract
If J.D. Vance wins and accepts the nomination for the Presidency for the Republican party in 2028, then the market resolves to Yes.
Ticker
KXPRESNOMR-28

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