Incumbent Democrat Madeleine Dean benefits from Pennsylvania’s 4th District’s D+8 Partisan Voter Index and its suburban Philadelphia base in Montgomery and Berks counties. All major forecasters rate the seat Solid or Safe Democratic ahead of the November 3, 2026 general election. Dean advanced unopposed through the May 19 primary, maintains strong fundraising exceeding $1 million, and holds key committee assignments that reinforce her position. Her Republican opponent, Aurora Stuski, raised no funds through mid-2026 and faces the structural disadvantages typical in this district. Trader consensus at roughly 94.5% Democratic reflects these entrenched factors. A late national Republican surge, unforeseen scandal, or health event could still alter the outcome before Election Day.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedPA-04 House Election Winner
$19,259 Vol.
$19,259 Vol.
Democratic Party
95%
Republican Party
6%
$19,259 Vol.
$19,259 Vol.
Democratic Party
95%
Republican Party
6%
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 Madeleine Dean benefits from Pennsylvania’s 4th District’s D+8 Partisan Voter Index and its suburban Philadelphia base in Montgomery and Berks counties. All major forecasters rate the seat Solid or Safe Democratic ahead of the November 3, 2026 general election. Dean advanced unopposed through the May 19 primary, maintains strong fundraising exceeding $1 million, and holds key committee assignments that reinforce her position. Her Republican opponent, Aurora Stuski, raised no funds through mid-2026 and faces the structural disadvantages typical in this district. Trader consensus at roughly 94.5% Democratic reflects these entrenched factors. A late national Republican surge, unforeseen scandal, or health event could still alter the outcome before Election Day.
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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