Will the Republican Party win the PA-04 House seat?

Prediction markets currently give a 8% probability that Will the Republican Party win the PA-04 House seat?. This contract trades at 8¢ on Polymarket, closing November 3, 2026. This market displays extreme mispricing with Republicans priced at just 8¢ despite PA-04 being a historically competitive or Republican-leaning district, generating an extraordinary 2091.8% implied yield on the Yes side.

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8¢
Bid/Ask 7/9¢·Spread 2¢·Vol $0·OI $32,250.649·Closes Nov 3, 2026·195d remaining
0x4c6666ade7c81774aadf7ce8a47e014830f39634e10c606db548b2ddb52c8a97

Analysis

5d ago

This market displays extreme mispricing with Republicans priced at just 8¢ despite PA-04 being a historically competitive or Republican-leaning district, generating an extraordinary 2091.8% implied yield on the Yes side. The zero 24-hour volume combined with $35,814 open interest and a wide 2¢ spread suggests severe illiquidity, making the price potentially unreliable and vulnerable to manipulation or stale quotes. With 201 days to expiration and a Cliff Risk Index of 12, this appears to be either a data anomaly, a market with insufficient price discovery, or a reflection of genuine uncertainty about the district's 2026 dynamics that hasn't been arbitraged away.

Resolution rules

This market will resolve according to the party of the candidate who wins the PA-04 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) 2150.9%
IY (No) 16.3%
Adj IY 1075%
CRI 12
▶ Full indicator table (4)
IndicatorValue
IY (Yes)2150.9%
IY (No)16.3%
Adj IY1075%
CRI12

Regime

Label
neutral
Score
0.5
Spread
2¢
Computed
4/21/2026, 8:24:24 PM
Indicators computed 4/21/2026, 8:23:18 PM

Trade

View on polymarketsf trade 0x4c6666ade7c81774aadf7ce8a47e014830f39634e10c606db548b2ddb52c8a97 yes 100

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