South Dakota U.S. Senate Race 2026 — Odds
Mike Rounds is running for a third term against Democrat Julian Beaudion, a state trooper and Sioux Falls community leader. South Dakota has not elected a Democratic senator since 2008 and the race is rated safe Republican everywhere. Treat the contract as a calibration benchmark.
Favorite: Republican
Current standings
- 1Republican92%
- 2Democrat8%
- 3Person B—
- 4Person D—
- 5Person F—
- 6Person H—
- ·Others (7 outcomes)<1%
Probability over time — Republican
Frequently asked questions
Who is favored to win the South Dakota Senate race in 2026?
Republican leads on Polymarket at 92%. Forecasters rate the seat Safe R.
Is Mike Rounds running for re-election?
Mike Rounds (R) is the incumbent in this South Dakota senate race. Mike Rounds is running for a third term against Democrat Julian Beaudion, a state trooper and Sioux Falls community leader. South Dakota has not elected a Democratic senator since 2008 and the race is rated safe Republican everywhere. Treat the contract as a calibration benchmark.
Where can I trade the South Dakota senate odds?
These markets trade on Polymarket — use the Polymarket link on this page to see the live order book. GeoOdds tracks and charts the probabilities but does not take bets. Trading involves risk; 18+ only.
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