John James
WinnerWhat happened
Resolved 2026-08-04
U.S. Rep. John James won Michigan's Republican gubernatorial primary on August 4, defeating businessman Perry Johnson, confirming what markets had priced at 96% the day before. James secured the nomination with President Donald Trump's endorsement, after other candidates including Mike Cox and Aric Nesbitt had withdrawn from the race.
Before Michigan Governor Republican Primary Winner ended, the final Polymarket odds were: John James: 100%. These probabilities were derived from real-money trading right up until the market closed.
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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.
Updated 2 months ago
Winner: John Jameson Aug 5, 2026

