Market comparison

Who will Trump endorse first in the 2028 US presidential election?

2 venues · 50 outcome rows · 3 comparable lines · 0 verified parity · active

Kalshi

Open venue ↗

6 outcomes · $49K reported volume

Observed 2m ago

Recorded venue end date: Mar 1, 2028

Polymarket

Open venue ↗

74 outcomes · $22K reported volume

Observed 18s ago

Recorded venue end date: Nov 6, 2028

Check settlement rules before comparing contracts. Matched outcomes may settle differently. These venues also report end dates more than 48 hours apart; event identity does not mean the contracts close or settle together. These are stored prices; record update times do not certify live quotes. Differences exclude fees and available size.

A shared identity alone does not make a price difference executable.

Available outcome prices by venue for Who will Trump endorse first in the 2028 US presidential election?
Outcome	Kalshi	Polymarket	Difference
J.D. Vance Same label, rules unverified Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.	47.0% Bid 47.0% · Ask 49.0% J.D. Vance Open Kalshi ↗	51.0% Bid 50.0% · Ask 52.0% J.D. Vance Open Polymarket ↗	4.0 pp
Marco Rubio Same label, rules unverified Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.	25.0% Bid 25.0% · Ask 28.0% Marco Rubio Open Kalshi ↗	30.0% Bid 29.0% · Ask 31.0% Marco Rubio Open Polymarket ↗	5.0 pp
Ron DeSantis Same label, rules unverified Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.	1.0% Bid 1.0% · Ask 2.0% Ron DeSantis Open Kalshi ↗	0.5% Bid 0.2% · Ask 0.9% Ron DeSantis Open Polymarket ↗	0.5 pp
Brian Kemp Not aligned No persisted outcome identity connects these venue contracts.	—	0.5% Bid 0.2% · Ask 0.9% Brian Kemp Open Polymarket ↗	—
Byron Donalds Not aligned No persisted outcome identity connects these venue contracts.	—	0.5% Bid 0.2% · Ask 0.9% Byron Donalds Open Polymarket ↗	—
Donald J. Trump Jr. Not aligned No persisted outcome identity connects these venue contracts.	6.0% Bid 2.0% · Ask 6.0% Donald J. Trump Jr. Open Kalshi ↗	—	—
Donald J. Trump Jr. Not aligned No persisted outcome identity connects these venue contracts.	—	5.1% Bid 2.0% · Ask 8.2% Donald Trump Jr. Open Polymarket ↗	—
Donald Trump Not aligned No persisted outcome identity connects these venue contracts.	—	3.9% Bid 1.2% · Ask 6.6% Donald Trump Open Polymarket ↗	—
Elon Musk Not aligned No persisted outcome identity connects these venue contracts.	—	3.2% Bid 0.3% · Ask 6.1% Elon Musk Open Polymarket ↗	—
Eric Trump Not aligned No persisted outcome identity connects these venue contracts.	—	4.7% Bid 0.5% · Ask 8.9% Eric Trump Open Polymarket ↗	—
Glenn Youngkin Not aligned No persisted outcome identity connects these venue contracts.	—	0.6% Bid 0.3% · Ask 0.9% Glenn Youngkin Open Polymarket ↗	—
Greg Abbott Not aligned No persisted outcome identity connects these venue contracts.	—	0.5% Bid 0.2% · Ask 0.9% Greg Abbott Open Polymarket ↗	—
Himself Not aligned No persisted outcome identity connects these venue contracts.	6.0% Bid 3.0% · Ask 6.0% Himself Open Kalshi ↗	—	—
Ivanka Trump Not aligned No persisted outcome identity connects these venue contracts.	—	0.3% Bid 0.1% · Ask 0.5% Ivanka Trump Open Polymarket ↗	—
Marjorie Taylor Greene Not aligned No persisted outcome identity connects these venue contracts.	—	0.2% Bid 0.1% · Ask 0.3% Marjorie Taylor Greene Open Polymarket ↗	—
No one Not aligned No persisted outcome identity connects these venue contracts.	9.0% Bid 9.0% · Ask 11.0% No one Open Kalshi ↗	—	—
Person AA Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AA · closed Open Polymarket ↗	—
Person AB Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AB · closed Open Polymarket ↗	—
Person AC Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AC · closed Open Polymarket ↗	—
Person AD Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AD · closed Open Polymarket ↗	—
Person AE Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AE · closed Open Polymarket ↗	—
Person AF Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AF · closed Open Polymarket ↗	—
Person AG Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AG · closed Open Polymarket ↗	—
Person AH Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AH · closed Open Polymarket ↗	—
Person AI Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AI · closed Open Polymarket ↗	—
Person AJ Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AJ · closed Open Polymarket ↗	—
Person AK Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AK · closed Open Polymarket ↗	—
Person AL Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AL · closed Open Polymarket ↗	—
Person AM Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AM · closed Open Polymarket ↗	—
Person AN Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AN · closed Open Polymarket ↗	—
Person AO Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AO · closed Open Polymarket ↗	—
Person AP Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AP · closed Open Polymarket ↗	—
Person AQ Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AQ · closed Open Polymarket ↗	—
Person AR Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AR · closed Open Polymarket ↗	—
Person AS Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AS · closed Open Polymarket ↗	—
Person AT Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AT · closed Open Polymarket ↗	—
Person AU Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AU · closed Open Polymarket ↗	—
Person AV Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AV · closed Open Polymarket ↗	—
Person AW Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AW · closed Open Polymarket ↗	—
Person AX Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AX · closed Open Polymarket ↗	—
Person AY Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AY · closed Open Polymarket ↗	—
Person AZ Not aligned No persisted outcome identity connects these venue contracts.	—	50.0% Bid 0.0% · Ask 100.0% Person AZ · closed Open Polymarket ↗	—
Rand Paul Not aligned No persisted outcome identity connects these venue contracts.	—	0.4% Bid 0.2% · Ask 0.6% Rand Paul Open Polymarket ↗	—
Robert F. Kennedy Jr. Not aligned No persisted outcome identity connects these venue contracts.	—	0.3% Bid 0.1% · Ask 0.4% Robert F. Kennedy Jr. Open Polymarket ↗	—
Sarah Huckabee Sanders Not aligned No persisted outcome identity connects these venue contracts.	—	0.5% Bid 0.2% · Ask 0.9% Sarah Huckabee Sanders Open Polymarket ↗	—
Ted Cruz Not aligned No persisted outcome identity connects these venue contracts.	—	0.6% Bid 0.2% · Ask 1.0% Ted Cruz Open Polymarket ↗	—
Thomas Massie Not aligned No persisted outcome identity connects these venue contracts.	—	0.4% Bid 0.2% · Ask 0.7% Thomas Massie Open Polymarket ↗	—
Tucker Carlson Not aligned No persisted outcome identity connects these venue contracts.	—	0.6% Bid 0.2% · Ask 1.0% Tucker Carlson Open Polymarket ↗	—
Tulsi Gabbard Not aligned No persisted outcome identity connects these venue contracts.	—	0.5% Bid 0.2% · Ask 0.9% Tulsi Gabbard Open Polymarket ↗	—
Vivek Ramaswamy Not aligned No persisted outcome identity connects these venue contracts.	—	0.6% Bid 0.2% · Ask 1.0% Vivek Ramaswamy Open Polymarket ↗	—

J.D. Vance

Same label, rules unverified

Labels suggest the same named outcome; no persisted outcome identity or settlement parity is verified.

Kalshi

47.0%

Bid 47.0% · Ask 49.0%

J.D. Vance

Open Kalshi ↗

Polymarket

51.0%

Bid 50.0% · Ask 52.0%

J.D. Vance

Who will Trump endorse first in the 2028 US presidential election?

Kalshi

Polymarket

J.D. Vance

Kalshi

Polymarket

Marco Rubio

Kalshi

Polymarket

Ron DeSantis

Kalshi

Polymarket

Brian Kemp

Kalshi

Polymarket

Byron Donalds

Kalshi

Polymarket

Donald J. Trump Jr.

Kalshi

Polymarket

Donald J. Trump Jr.

Kalshi

Polymarket

Donald Trump

Kalshi

Polymarket

Elon Musk

Kalshi

Polymarket

Eric Trump

Kalshi

Polymarket

Glenn Youngkin

Kalshi

Polymarket

Greg Abbott

Kalshi

Polymarket

Himself

Kalshi

Polymarket

Ivanka Trump

Kalshi

Polymarket

Marjorie Taylor Greene

Kalshi

Polymarket

No one

Kalshi

Polymarket

Person AA

Kalshi

Polymarket

Person AB

Kalshi

Polymarket

Person AC

Kalshi

Polymarket

Person AD

Kalshi

Polymarket

Person AE

Kalshi

Polymarket

Person AF

Kalshi

Polymarket

Person AG

Kalshi

Polymarket

Person AH

Kalshi

Polymarket

Person AI

Kalshi

Polymarket

Person AJ

Kalshi