Incumbent Summer Lee secured the Democratic nomination for Pennsylvania’s 12th congressional district with 81 percent in the May 2026 primary, positioning her for the November general election against Republican James Hayes. The Pittsburgh-based district carries a strongly Democratic partisan voting index, reflected in consistent “Solid D” or “Safe D” ratings from nonpartisan forecasters. Lee’s substantial fundraising edge and the absence of competitive Republican challengers have reinforced trader consensus around a Democratic victory. Potential shifts could arise from unforeseen developments such as a major scandal, health event affecting the incumbent, or an unusually strong national Republican wave that alters turnout patterns in this urban and suburban seat.
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
$16,975 Vol.
$16,975 Vol.
Democratic Party
95%
Republican Party
3%
$16,975 Vol.
$16,975 Vol.
Democratic Party
95%
Republican Party
3%
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 Summer Lee secured the Democratic nomination for Pennsylvania’s 12th congressional district with 81 percent in the May 2026 primary, positioning her for the November general election against Republican James Hayes. The Pittsburgh-based district carries a strongly Democratic partisan voting index, reflected in consistent “Solid D” or “Safe D” ratings from nonpartisan forecasters. Lee’s substantial fundraising edge and the absence of competitive Republican challengers have reinforced trader consensus around a Democratic victory. Potential shifts could arise from unforeseen developments such as a major scandal, health event affecting the incumbent, or an unusually strong national Republican wave that alters turnout patterns in this urban and suburban seat.
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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