Bob Brooks secured the Democratic nomination in Pennsylvania’s 7th congressional district after winning the May 2026 primary, positioning the firefighter union leader against incumbent Republican Ryan Mackenzie in the Lehigh Valley swing seat. The district’s narrow partisan margins, including Donald Trump’s 0.5-point 2024 victory there, combined with strong union backing for Brooks and Democratic targeting of GOP-held battlegrounds during the 2026 midterms, underpin trader consensus reflected in the 75.5% Democratic implied probability. Forecasters rate the race a toss-up or lean Democratic, with limited recent polling showing Brooks ahead by a few points. Upcoming fall campaign developments and turnout patterns could still shift the outcome ahead of the November general election.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedPA-07 House Election Winner
$18,419 Vol.
$18,419 Vol.
Democratic Party
76%
Republican Party
24%
$18,419 Vol.
$18,419 Vol.
Democratic Party
76%
Republican Party
24%
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: Dec 16, 2025, 12:49 PM 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...Bob Brooks secured the Democratic nomination in Pennsylvania’s 7th congressional district after winning the May 2026 primary, positioning the firefighter union leader against incumbent Republican Ryan Mackenzie in the Lehigh Valley swing seat. The district’s narrow partisan margins, including Donald Trump’s 0.5-point 2024 victory there, combined with strong union backing for Brooks and Democratic targeting of GOP-held battlegrounds during the 2026 midterms, underpin trader consensus reflected in the 75.5% Democratic implied probability. Forecasters rate the race a toss-up or lean Democratic, with limited recent polling showing Brooks ahead by a few points. Upcoming fall campaign developments and turnout patterns could still shift the outcome ahead of the November general election.
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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