The open seat in New Hampshire’s 1st congressional district, created by incumbent Democrat Chris Pappas’s Senate bid, remains rated Likely or Lean Democratic by forecasters including Cook, Inside Elections, and Sabato’s Crystal Ball, aligning with prediction market consensus. The district’s D+2 partisan voting index and recent House margins have supported Democratic performance even as Donald Trump carried New Hampshire in 2024. Democratic primary frontrunners Maura Sullivan and Stefany Shaheen have posted strong early fundraising and endorsements, while Republican candidates including Anthony DiLorenzo trail in primary polling. Broader conditions, including underwater presidential approval and a Democratic edge on the generic ballot, have reinforced trader expectations ahead of the September 8 primaries and November general election.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedNH-01 House Election Winner
Democratic Party
86%
Republican Party
13%
Democratic Party
86%
Republican Party
13%
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, 12:24 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...The open seat in New Hampshire’s 1st congressional district, created by incumbent Democrat Chris Pappas’s Senate bid, remains rated Likely or Lean Democratic by forecasters including Cook, Inside Elections, and Sabato’s Crystal Ball, aligning with prediction market consensus. The district’s D+2 partisan voting index and recent House margins have supported Democratic performance even as Donald Trump carried New Hampshire in 2024. Democratic primary frontrunners Maura Sullivan and Stefany Shaheen have posted strong early fundraising and endorsements, while Republican candidates including Anthony DiLorenzo trail in primary polling. Broader conditions, including underwater presidential approval and a Democratic edge on the generic ballot, have reinforced trader expectations ahead of the September 8 primaries and 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



Beware of external links.
Beware of external links.
Frequently Asked Questions