Will the Democratic Party win the CA-45 House seat?

Prediction markets currently give a 86% probability that Will the Democratic Party win the CA-45 House seat?. This contract trades at 86¢ on Polymarket, closing November 3, 2026. This market shows extreme asymmetry in risk-adjusted yields (517% overall), driven by a massive 1034% implied yield on the "No" side despite only a 15% probability, suggesting severe underpricing of Republican upset potential relative to the Democratic baseline.

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86¢
Bid/Ask 85/86¢·Spread 1¢·Vol $0·OI $23,801.419·Closes Nov 3, 2026·195d remaining
0x5e95ab3b85ce3e98f7cc841671ddb18807c0819487134925b639402b499f360f
7-day price25 snapshots · 4 regime
86¢86¢ current
Apr 1285¢Apr 21

Analysis

4d ago

This market shows extreme asymmetry in risk-adjusted yields (517% overall), driven by a massive 1034% implied yield on the "No" side despite only a 15% probability, suggesting severe underpricing of Republican upset potential relative to the Democratic baseline. The $0 24-hour volume and modest $13.6k open interest indicate thin liquidity, making the 85¢ price potentially unstable and vulnerable to sharp moves as we approach the November 2026 election. The 6 Cliff Risk Index and 200-day timeframe suggest this market could experience significant repricing once campaign dynamics and polling data solidify closer to the midterms.

Resolution rules

This market will resolve according to the party of the candidate who wins the CA-45 congressional district seat in the U.S. House of Representatives in the 2026 midterm elections. The midterm elections will take place on November 4, 2026. ​A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources. This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).

Indicators

IY (Yes) 30.5%
IY (No) 1149.3%
Adj IY 575%
CRI 6
▶ Full indicator table (4)
IndicatorValue
IY (Yes)30.5%
IY (No)1149.3%
Adj IY575%
CRI6

Regime

Label
neutral
Score
0.5
Spread
1¢
Computed
4/21/2026, 9:54:46 PM
Indicators computed 4/21/2026, 9:53:18 PM

Trade

View on polymarketsf trade 0x5e95ab3b85ce3e98f7cc841671ddb18807c0819487134925b639402b499f360f yes 100

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