Polymarket$3.70BOIOpen interest: sum of pool liquidity across all active markets, reported by the Polymarket API.
Kalshi$405.06MOIOpen interest: total contracts outstanding across all active markets, reported by the Kalshi API.
Limitless$27.82MOIOpen interest: estimated from total volume traded (USDC). Limitless does not report a separate OI metric.
Updated Today
If Vivek Ramaswamy wins the nomination for the Republican Party to contest the 2026 Class III (special election) Ohio Senate seat, then the market resolves to Yes.
Winner: Jon Hustedon Nov 3, 2026
As of March 19, 2026, the Kalshi odds for Wil Mike Carey be the Republican nominee for the Senate in Ohio? are: Jon Husted: 97%, Dave Yost: 2%, Vivek Ramaswamy: 2%. These probabilities are derived from real-money trading and update in real time.
Wil Mike Carey be the Republican nominee for the Senate in Ohio? 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.
