Total Active Markets

Count of all non-resolved markets currently tracked across Polymarket, Kalshi, and Limitless.

129,184

Total Volume

Lifetime trading volume across all platforms. Polymarket and Kalshi report volume directly; Limitless volume is cumulative USDC traded.

$5,857,617,844

24h Volume

24-hour trading volume. Polymarket and Kalshi report this directly. Limitless does not break out 24h volume separately, so it is not included.

$593,814,055

Total Open Interest

Polymarket: sum of pool liquidity. Kalshi: open interest (contracts outstanding). Limitless: uses total volume as a proxy — no separate OI metric is available.

$3,528,876,133

Polymarket$3.11BOIOpen interest: sum of pool liquidity across all active markets, reported by the Polymarket API.

Kalshi$391.73MOIOpen interest: total contracts outstanding across all active markets, reported by the Kalshi API.

Limitless$25.08MOIOpen interest: estimated from total volume traded (USDC). Limitless does not report a separate OI metric.

Total Active Markets

Count of all non-resolved markets currently tracked across Polymarket, Kalshi, and Limitless.

129,184

Total Volume

Lifetime trading volume across all platforms. Polymarket and Kalshi report volume directly; Limitless volume is cumulative USDC traded.

$5,857,617,844

24h Volume

24-hour trading volume. Polymarket and Kalshi report this directly. Limitless does not break out 24h volume separately, so it is not included.

$593,814,055

Total Open Interest

Polymarket: sum of pool liquidity. Kalshi: open interest (contracts outstanding). Limitless: uses total volume as a proxy — no separate OI metric is available.

$3,528,876,133

Polymarket$3.11BOIOpen interest: sum of pool liquidity across all active markets, reported by the Polymarket API.

Kalshi$391.73MOIOpen interest: total contracts outstanding across all active markets, reported by the Kalshi API.

Limitless$25.08MOIOpen interest: estimated from total volume traded (USDC). Limitless does not report a separate OI metric.

polymarket🏛️ politics|4 outcomes

OH-09 Republican Primary Winner

Updated Today

Volume:$5,500

Resolves:May 5, 2026

Trade on Polymarket

All Outcomes

Leading

Derek Merrin

-0.15% 24h

40.0%

Trade

Madison Sheahan

$1,289 vol-0.01% 24h

32.0%

Trade

Trade on Polymarket

Frequently Asked Questions

What are the current odds for OH-09 Republican Primary Winner?

As of March 18, 2026, the Polymarket odds for OH-09 Republican Primary Winner are: Derek Merrin: 40%, Madison Sheahan: 32%, Anthony Campbell: 2%, Jacob Frost: 1%. These probabilities are derived from real-money trading and update in real time.

Where can I bet on OH-09 Republican Primary Winner?

OH-09 Republican Primary Winner is currently available on Polymarket. Check PredictMarketCap for cross-platform availability as new markets are added regularly.

How are OH-09 Republican Primary Winner prediction market odds calculated?

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.