Jake Auchincloss's incumbency in the solidly Democratic Massachusetts 4th congressional district drives the 91.5% trader consensus for a Democratic win, bolstered by his 2022 margin exceeding 70% in a D+21 Cook PVI area and recent polls showing him ahead 58-31 against Republican Matthew Nagowski. Strong fundraising—$1.2 million cash-on-hand versus Nagowski's under $100,000—and endorsements from local unions and EMILY's List reinforce this edge, with no major scandals shifting sentiment. Realistic challenges include a late GOP surge via national Republican momentum or an unforeseen Auchincloss withdrawal, though district history and stable polling suggest low upset risk ahead of November balloting.
Experimental AI-generated summary referencing Polymarket data · UpdatedMA-04 House Election Winner
MA-04 House Election Winner
Democratic Party
92%
Republican Party
7%
Democratic Party
92%
Republican Party
7%
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, 11:09 AM ET
Resolver
0x2F5e3684c...Resolver
0x2F5e3684c...Jake Auchincloss's incumbency in the solidly Democratic Massachusetts 4th congressional district drives the 91.5% trader consensus for a Democratic win, bolstered by his 2022 margin exceeding 70% in a D+21 Cook PVI area and recent polls showing him ahead 58-31 against Republican Matthew Nagowski. Strong fundraising—$1.2 million cash-on-hand versus Nagowski's under $100,000—and endorsements from local unions and EMILY's List reinforce this edge, with no major scandals shifting sentiment. Realistic challenges include a late GOP surge via national Republican momentum or an unforeseen Auchincloss withdrawal, though district history and stable polling suggest low upset risk ahead of November balloting.
Experimental AI-generated summary referencing Polymarket data · Updated
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