Incumbent Democrat Summer Lee holds a commanding position in Pennsylvania’s 12th congressional district, reflected in the market’s 94.5% implied probability for the Democratic nominee. Lee secured the Democratic primary with more than 81% of the vote in May 2026 and enters the general election with endorsements and fundraising advantages in a Pittsburgh-area district rated Solid or Safe Democratic by multiple forecasters. Republican nominee James Hayes faces structural headwinds in a seat where Democrats have maintained consistent advantages in recent cycles. The November 3, 2026, general election timeline leaves room for shifts driven by turnout patterns, national political conditions, or late developments, though the current consensus pricing indicates limited perceived pathways for an upset absent major catalysts.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedPA-12 House Election Winner
$16,370 Vol.
$16,370 Vol.
Democratic Party
95%
Republican Party
4%
$16,370 Vol.
$16,370 Vol.
Democratic Party
95%
Republican Party
4%
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/).
Market Opened: Jan 28, 2026, 11:23 AM ET
Resolver
0x2F5e3684c...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/).
Resolver
0x2F5e3684c...Incumbent Democrat Summer Lee holds a commanding position in Pennsylvania’s 12th congressional district, reflected in the market’s 94.5% implied probability for the Democratic nominee. Lee secured the Democratic primary with more than 81% of the vote in May 2026 and enters the general election with endorsements and fundraising advantages in a Pittsburgh-area district rated Solid or Safe Democratic by multiple forecasters. Republican nominee James Hayes faces structural headwinds in a seat where Democrats have maintained consistent advantages in recent cycles. The November 3, 2026, general election timeline leaves room for shifts driven by turnout patterns, national political conditions, or late developments, though the current consensus pricing indicates limited perceived pathways for an upset absent major catalysts.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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