Polymarket
Who will Trump endorse first in the 2028 US presidential election?
As of October 5, 2026, traders on Polymarket favor J.D. Vance at 50%, ahead of Marco Rubio at 23%. $0 traded in the last 24 hours, $21K in all.
- Favorite
- J.D. Vance 50%
- 24 hours
- no change
- Traded today
- $0
- Traded in all
- $21K
- Closes
- November 7, 2028
Every outcome (top 6 of 21)
- J.D. Vance50%
- Marco Rubio23%
- Donald Trump Jr.5%
- Eric Trump5%
- Donald Trump4%▼ 1
- Elon Musk3%
15 more outcomes, mostly long shots, are listed on Polymarket.
How the odds have moved
0%25%50%75%100%3:49 AM3:49 PM3:49 AM50% J.D. Vance
The line follows the current favorite, J.D. Vance. One reading an hour.
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Prices are Polymarket's own (displayed price), collected every 10 minutes. Research, not betting advice.
