Will the Democratic Party win the CA-20 House seat?

Prediction markets currently give a 10% probability that Will the Democratic Party win the CA-20 House seat?. This contract trades at 10¢ on Polymarket, closing November 3, 2026. This market shows extreme illiquidity with zero 24-hour volume despite $19.6K open interest, suggesting the 10¢ price may not reflect genuine market consensus.

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10¢
Bid/Ask 9/10¢·Spread 1¢·Vol $0·OI $39,606.912·Closes Nov 3, 2026·195d remaining
0x3940d851b3425caf5a727702cb70fbc82d94c8d022011c24d53af21bd3a41ed5

Analysis

4d ago

This market shows extreme illiquidity with zero 24-hour volume despite $19.6K open interest, suggesting the 10¢ price may not reflect genuine market consensus. The implied yield of 1,642.9% on the Yes side is extraordinarily high and likely a mispricing artifact stemming from the thin liquidity and wide 1¢ spread. With 200 days to expiry and a Cliff Risk Index of 9, this market carries substantial tail risk, making the current price potentially unreliable for serious prediction purposes until trading activity normalizes.

Resolution rules

This market will resolve according to the party of the candidate who wins the CA-20 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) 1683.3%
IY (No) 20.8%
Adj IY 842%
CRI 9
▶ Full indicator table (4)
IndicatorValue
IY (Yes)1683.3%
IY (No)20.8%
Adj IY842%
CRI9

Regime

Label
neutral
Score
0.5
Spread
1¢
Computed
4/21/2026, 8:26:04 PM
Indicators computed 4/21/2026, 8:23:18 PM

Trade

View on polymarketsf trade 0x3940d851b3425caf5a727702cb70fbc82d94c8d022011c24d53af21bd3a41ed5 yes 100

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