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2028 Republican VP 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
Marco Rubio 29¢ 30¢ Kalshi
J.D. Vance 6.9¢ Polymarket
Donald J. Trump Jr. 4.1¢
Donald J. Trump
Sarah Huckabee Sanders 3.3¢ Kalshi
Byron Donalds 2.8¢ 2.5¢ level
Katie Britt 2.8¢ 2.2¢ Polymarket
Tim Scott
Glenn Youngkin 2.5¢ 4.9¢ Kalshi
Elise Stefanik 2.7¢
Ron DeSantis 2.2¢ Kalshi
Tulsi Gabbard 1.7¢ 2.1¢ level
Josh Hawley 1.8¢ Kalshi
Nikki Haley 1.6¢ 2.1¢ Kalshi
Ted Cruz 1.5¢ 3.9¢ Kalshi
Erika Kirk 1.5¢ 1.3¢ level
Greg Abbott 0.8¢ level

The two venues disagree most on Josh Hawley: 1.8¢ on Kalshi against 5¢ on Polymarket, a gap of 3.2¢ on the same outcome.

Only outcomes with a live two-sided quote are shown, and 5 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 Thu, 17 Sep 2026 04:07:58 UTC.

Your call

The market says 29%. 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.

29%

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The record

What this market has cost every day since 21 December 2025, 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 DecJanFebMarAprMayJunJulAugSept Marco Rubio 28 J.D. Vance 6.4 Donald J. Trump Jr 4

Over this window Marco Rubio went from 18 to 28, a move of 10 points toward 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 Marco Rubio contract
If Marco Rubio accepts the nomination for the Vice Presidency for the Republican party in 2028, then the market resolves to Yes.
Ticker
KXVPRESNOMR-28

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