All comparisons

Arkansas Senate Election Winner: Kalshi vs Polymarket odds

Tom Cotton (R) : 99¢ on Kalshi, 98¢ on Polymarket. Both exchanges price it the same.

Arkansas Senate Election Winner

Kalshi vol $472KPolymarket 24h $54K
OutcomeKalshiPolymarketGap
Tom Cotton (R) 99¢98¢-1¢
Hallie Shoffner (D)1¢1¢0¢

Why the same contract has two prices

Kalshi and Polymarket run separate order books with different traders, so prices drift apart. Fees differ, and liquidity differs by market. Check each exchange's resolution rules before treating a gap as free money: small wording differences can mean the contracts are not identical.

Where can you trade it?

Kalshi and Polymarket US availability depends on your state, and sports contracts are blocked in some states. Check your state.

Related comparisons