Robert F. Kennedy Jr.'s 49% implied probability as the 2028 Republican presidential nominee reflects trader consensus on his high-profile role as Health and Human Services Secretary, where Make America Healthy Again initiatives have gained traction through early regulatory reforms and broad appeal beyond traditional GOP voters, fueling speculation despite his public denials of a run. Vice President J.D. Vance commands 36.5% as the incumbent heir apparent with strong base support, though recent polling slippage and advisor frustrations over his media associations have eroded his once-dominant lead. Secretary of State Marco Rubio's odds at 20.5% have climbed sharply in the past week amid his lead on Iran war diplomacy—including airstrikes and negotiations—elevating his foreign policy credentials, attracting GOP donors plotting a draft effort, and prompting President Trump to poll confidants on Vance versus Rubio ahead of midterms that could clarify the primary path.
Experimental AI-generated summary referencing Polymarket data · UpdatedRepublican Presidential Nominee 2028
Republican Presidential Nominee 2028
J.D. Vance 36.6%
Marco Rubio 20.5%
Tucker Carlson 5.0%
Ron DeSantis 2.8%
$494,226,221 Vol.
$494,226,221 Vol.

J.D. Vance
37%

Marco Rubio
21%

Tucker Carlson
5%

Ron DeSantis
3%

Glenn Youngkin
2%

Thomas Massie
2%

Donald Trump
2%

Donald Trump Jr.
2%

Rand Paul
1%

Vivek Ramaswamy
1%

Ivanka Trump
1%

Ted Cruz
1%

Elon Musk
1%

Tulsi Gabbard
1%

Marjorie Taylor Greene
1%

Nikki Haley
1%

Greg Abbott
1%

Robert F. Kennedy Jr.
1%

Brian Kemp
1%

Matt Gaetz
1%

Eric Trump
1%

Sarah Huckabee Sanders
1%

Katie Britt
1%

Kristi Noem
1%

Tom Brady
1%

Kim Kardashian
1%

Pete Hegseth
1%

Elise Stefanik
1%

Josh Hawley
1%

John Thune
1%

Joe Kent
1%

Steve Bannon
1%

Byron Donalds
1%

Erika Kirk
1%

Mike Pence
1%
J.D. Vance 36.6%
Marco Rubio 20.5%
Tucker Carlson 5.0%
Ron DeSantis 2.8%
$494,226,221 Vol.
$494,226,221 Vol.

J.D. Vance
37%

Marco Rubio
21%

Tucker Carlson
5%

Ron DeSantis
3%

Glenn Youngkin
2%

Thomas Massie
2%

Donald Trump
2%

Donald Trump Jr.
2%

Rand Paul
1%

Vivek Ramaswamy
1%

Ivanka Trump
1%

Ted Cruz
1%

Elon Musk
1%

Tulsi Gabbard
1%

Marjorie Taylor Greene
1%

Nikki Haley
1%

Greg Abbott
1%

Robert F. Kennedy Jr.
1%

Brian Kemp
1%

Matt Gaetz
1%

Eric Trump
1%

Sarah Huckabee Sanders
1%

Katie Britt
1%

Kristi Noem
1%

Tom Brady
1%

Kim Kardashian
1%

Pete Hegseth
1%

Elise Stefanik
1%

Josh Hawley
1%

John Thune
1%

Joe Kent
1%

Steve Bannon
1%

Byron Donalds
1%

Erika Kirk
1%

Mike Pence
1%
The resolution source for this market will be a consensus of official Republican Party sources.
Any replacement of the Republican nominee before election day will not change the resolution of the market.
Market Opened: Jul 11, 2025, 3:21 PM ET
Resolver
0x2F5e3684c...We anticipate rolling out a new rewards and oracle-resolution system later this year that will generate returns on your positions, at which point there will be a simple 1-click migration.
The resolution source for this market will be a consensus of official Republican Party sources.
Any replacement of the Republican nominee before election day will not change the resolution of the market.
Resolver
0x2F5e3684c...We anticipate rolling out a new rewards and oracle-resolution system later this year that will generate returns on your positions, at which point there will be a simple 1-click migration.
Robert F. Kennedy Jr.'s 49% implied probability as the 2028 Republican presidential nominee reflects trader consensus on his high-profile role as Health and Human Services Secretary, where Make America Healthy Again initiatives have gained traction through early regulatory reforms and broad appeal beyond traditional GOP voters, fueling speculation despite his public denials of a run. Vice President J.D. Vance commands 36.5% as the incumbent heir apparent with strong base support, though recent polling slippage and advisor frustrations over his media associations have eroded his once-dominant lead. Secretary of State Marco Rubio's odds at 20.5% have climbed sharply in the past week amid his lead on Iran war diplomacy—including airstrikes and negotiations—elevating his foreign policy credentials, attracting GOP donors plotting a draft effort, and prompting President Trump to poll confidants on Vance versus Rubio ahead of midterms that could clarify the primary path.
Experimental AI-generated summary referencing Polymarket data · Updated
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