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If Thomas Massie announces a presidential campaign to contest the presidential nomination of the Republican party for the 2028 U.S. presidential election before Jan 1, 2028, then the market resolves to Yes.
As of March 27, 2026, the Kalshi odds for Who will run for the Republican presidential nomination in 2028? are: J.D. Vance: 76%, Marco Rubio: 67%, Ted Cruz: 67%, Ron DeSantis: 65%, Josh Hawley: 47%. These probabilities are derived from real-money trading and update in real time.
Who will run for the Republican presidential nomination in 2028? is currently available on Kalshi. Check PredictMarketCap for cross-platform availability as new markets are added regularly.
Prediction market odds reflect the aggregate opinion of traders who risk real money on outcomes. The price of a share (e.g., 65¢) represents the market's implied probability (65%). Prices move as traders buy and sell based on new information, polls, and analysis.
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