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CA-21 House winner?

Market price history

Rolling 7-day window of market YES price with the OU fair-price range overlay.

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Market price
Democratic party★ BEST82¢
Republican party15¢
Kalshi • Volume: 3.3K contracts • Updated 3h agoCloses: 2027-11-03
Kalshi · Elections
OU's Pick
YES · Democratic party
at 82¢
Price gap
Kalshi82¢
OU's fair88¢
+6¢ underpriced · pays 1.2×
Confidence
High

California's 21st district is a Democratic stronghold currently represented by Jim Costa and historical trends strongly favor the incumbent party during a Republican presidency.

High conviction
Not financial advice. For informational purposes only. Prediction markets involve risk of loss. AI may contain errors.