Projected Seats: 52D - 48R

2026 South Dakota Senate Election Odds, Polls & Ratings

South Dakota U.S. Senate seat. Republican-held seat. Republicans 100% to Democrats 0%. Rated Solid R. R+13 in latest polls (Brian Bengs vs Mike Rounds). Live odds from Polymarket and Kalshi, updated every minute.

South Dakota Senate

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Data from Polymarket, Kalshi, Cook Political Report, Sabato's Crystal Ball, Inside Elections, Race to the WH, and 270toWin. Contact

Market Data

Polling Data