Will Mike Rounds be the Republican nominee for Senate in South Dakota?
Market price history
Rolling 7-day window of market YES price with the OU fair-price range overlay.
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Market price
YES99¢ (99%)
NO1¢ (1%)
Latest refresh · prices in cents
Polymarket • Volume: $7.5K • Updated 1h agoCloses: 2026-06-28 (28d)
Polymarket · Politics
OU's Pick
NO at 1¢ · pays 125×
Price gap
Polymarket1¢
→OU's fair8¢
+7¢ underpriced · pays 125×
Confidence
Moderate
Incumbent Senator Mike Rounds holds a massive financial advantage with over two million dollars in cash and leads his only primary challenger in early polling.
Off market consensus
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