HOUSE
Massachusetts MA-04 House2026
RACE AT A GLANCE
RACE TYPE
Incumbent running
Jake Auchincloss (D)
COOK PARTISAN VOTING INDEX
Last updated : Nov 17, 2025D +50
R +50
D +11
Race summary
Rep. Jake Auchincloss, a 37-year-old Marine veteran, was first elected in 2020 after winning an open Democratic primary with a mere 22% of the vote. The former Republican managed to consolidate the moderate vote, defeating a crowd of candidates running to the left.Key Dates
Filing Deadline: Aug 25, 2026
Primary Election: Sep 1, 2026
INCUMBENT
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INCUMBENT
Full Bio:
AUCHINCLOSS, Jake, a Representative from Massachusetts; born in Boston, Suffolk County, Mass., on January 29, 1988; graduated from Newton North High School, Newton, Mass., 2006; A.B., Harvard University, Cambridge, Mass., 2010; M.B.A., Massachusetts Institute of Technology, Cambridge, Mass., 2016; United States Marine Corps, 2010-2015; member of the Newton, Mass., city council, 2016-2020; business professional; elected as a Democrat to the One Hundred Seventeenth Congress (January 3, 2021-present).
Source: Bioguide
CANDIDATES
Independents / Other Parties
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DISTRICT DATA
Massachusetts - 04
Southeast: Newton, Brookline, Fall River
Population Breakdown
Source: 2020 Census (VAP) for 2026
Past Presidential Results from this District
2024 Election Results
Source: Dave Leip
2020 Election Results
Source: Dave's Redistricting/VEST
RACE ANALYSIS
Race Analysis
Updated: Jun 3, 2025
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