Will the Republican Party win the CA-18 House seat?
Market price history
Rolling 7-day window of market NO price with the OU fair-price range overlay.
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Market price
YES4¢ (4%)
NO96¢ (96%)
Latest refresh · prices in cents
Polymarket • Volume: $18.5K • Updated 1h agoCloses: 2026-11-03
Polymarket · Politics
OU's Pick
YES at 4¢ · pays 25×
Price gap
Polymarket4¢
→OU's fair12¢
+8¢ underpriced · pays 25×
Confidence
Moderate
California's 18th district is a Democratic stronghold where the party currently maintains a massive 43-9 seat advantage across the state's congressional delegation.
Off market consensus
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