Live market summary
J.D. Vance is favored at 42% as of 26 Aug 2026, 17:03 UTC across 3 markets.
- J.D. Vance: 42% (24h change 0%)
- Marco Rubio: 34% (24h change 0%)
- Thomas Massie: 5% (24h change 0%)
presidential3 marketsLIVE
2028 Iowa Republican caucus winner?
Trade ↗All options
Odds history
Loading chart
About this market
Market question: 2028 Iowa Republican caucus winner?
How to read these odds
Each percentage is the latest traded Kalshi price for that option. A 62% contract price implies a 62% market-estimated chance, but prediction markets can move quickly and are not polls.
Market odds FAQ
Who is favored in 2028 Iowa Republican caucus winner?
J.D. Vance is favored at 42% as of 26 Aug 2026, 17:03 UTC, based on live Kalshi prediction-market prices.
What are the current odds for 2028 Iowa Republican caucus winner?
J.D. Vance: 42%; Marco Rubio: 34%; Thomas Massie: 5%. These are live market prices.
Where do these odds come from?
Each probability is a traded price from Kalshi, a CFTC-regulated prediction-market exchange. A contract trading at 62¢ implies a 62% market-estimated chance. ElectionOdds displays the data and does not create its own forecast.