House districts / Massachusetts


Massachusetts's 6th congressional district

MA-6. Same lines in 2026 as in 2022.

Seth Moulton
Current member
Seth Moulton
Democrat. In office since 2015.
2026 lines

Fundraising

6 other 2026 candidates filed reports (primary candidates). 4 other candidates have not filed.

Federal Election Commission, candidate totals, public domain.

President in this district

PollCheck calculation from precinct returns on the 2026 lines (method).

YearDemocratRepublicanOtherMargin
2024Harris 59.0%Trump 38.5%2.5%D+20.6
2020Biden 62.6%Trump 35.2%2.2%D+27.5
2016Clinton 55.4%Trump 37.3%7.3%D+18.2

Who lives here

MeasureThis districtUS
People
Population
784,690
Adults (18+)
627,976
Citizens, % of adults
93.4%
92.1%
Age, % of adults
18 to 29
17.1%
20.3%
30 to 44
23.4%
25.9%
45 to 64
34.6%
31.8%
65 and over
24.9%
22.0%
Race and Hispanic origin, % of residents
White
75.5%
57.4%
Black
3.1%
11.9%
Hispanic
11.8%
19.3%
Asian
4.8%
5.9%
Other or more than one
4.8%
5.5%
Education and income
Bachelor's degree or higher, % of 25+
49.9%
35.7%
Median household income
$118,476
$80,734

American Community Survey 2020-2024 5-year estimates for this district. The tick marks the US figure.

Winning margin

Results since 1976

YearWinnerShare Runner-upShareMargin
Current lines (2022 on) post-census redistricting
2024Seth Moulton Democrat97.8% others 2.2%D+95.6
2022Seth Moulton Democrat62.9%Bob May Republican others 2.0%35.2%D+27.7
Earlier lines, elections 2012-2020 seat count changed from 10 to 9 after the census
2020Seth Moulton Democrat65.4%John Paul Moran Republican others 0.1%34.4%D+31.0
2018Seth Moulton Democrat65.2%Joseph S. Schneider Republican others 3.4%31.4%D+33.8
2016Seth Moulton Democrat98.4% others 1.6%D+96.7
2014Seth W. Moulton Democrat55.0%Richard R. Tisei Republican others 3.9%41.1%D+13.8
2012John F. Tierney Democrat46.4%Richard R. Tisei Republican others 8.3%45.3%D+1.1
Earlier lines, elections 2002-2010 post-census redistricting
2010John F. Tierney Democrat56.9%Bill Hudak Republican others 0.2%43.0%D+13.9
2008John F. Tierney Democrat66.8%Richard A. Baker Republican others 5.2%28.0%D+38.8
2006John F. Tierney Democrat66.3%Richard W. Barton Republican others 4.8%28.8%D+37.5
2004John F. Tierney Democrat66.3%Stephen P. O'Malley, Jr. Republican others 5.2%28.5%D+37.9
2002John F. Tierney Democrat64.4%Mark C. Smith Republican others 5.7%29.8%D+34.6
Earlier lines, elections 1992-2000 seat count changed from 11 to 10 after the census
2000John F. Tierney Democrat67.6%Paul McCarthy Republican others 4.9%27.5%D+40.1
1998John F. Tierney Democrat54.5%Peter G. Torkildsen Republican others 3.1%42.4%D+12.2
1996John F. Tierney Democrat48.1%Peter F. Torkildsen Republican others 3.9%48.0%D+0.1
1994Peter G. Torkildsen Republican50.5%John F. Tierney Democrat others 2.1%47.4%R+3.1
1992Peter G. Torkildsen Republican54.8%Nicholas Mavroules Democrat others 0.3%44.9%R+10.0
Earlier lines, elections 1982-1990 seat count changed from 12 to 11 after the census
1990Nicholas Mavroules Democrat61.0%Edgar L. Kelley Republican others 6.3%32.7%D+28.2
1988Nicholas Mavroules Democrat69.7%Paul McCarthy Republican others 0.1%30.3%D+39.4
1986Nicholas Mavroules Democrat75.5% others 24.6%D+50.9
1984Nicholas Mavroules Democrat70.4%Frederick S. Leber Republican others 3.2%26.4%D+43.9
1982Nicholas Mavroules Democrat57.8%Thomas H. Trimarco Republican42.2%D+15.7
Earlier lines, elections 1976-1980
1980Nicholas Mavroules Democrat50.8%Thomas H. Trimarco Republican others 2.1%47.1%D+3.7
1978Nicholas Mavroules Democrat53.8%William E. Bronson Republican46.2%D+7.5
1976Michael Harrington Democrat54.8%William E. Bronson Republican others 3.9%41.3%D+13.5

More on Massachusetts

Other Massachusetts districts

About these results

Shares count all candidate votes, including write-ins, with a candidate's votes on several party lines added together. Each result is on the lines in force at the time. Mid-decade redraws before 2016 may be unmarked.

President in this district: 2016 and 2020 are estimates: precinct votes are split between districts by census block.

Counties only partly inside the district show the 2024 result for that part; estimates are labelled.

Margin chart: winner minus runner-up. Gaps are unopposed races; dashed lines are new district lines.

Sources

Results: MIT Election Data and Science Lab, U.S. House 1976-2016 (doi:10.7910/DVN/IG0UN2, CC0; via MEDSL/constituency-returns), and Clerk of the US House, Statistics of the Presidential and Congressional Election 2018-2024 (public domain).

Presidential results: PollCheck calculation from MIT Election Data and Science Lab 2024 precinct returns (doi:10.7910/DVN/XDJYKC, doi:10.7910/DVN/USBYR4, CC0; state totals doi:10.7910/DVN/42MVDX, CC0) and Voting and Election Science Team 2016 and 2020 precinct results and shapes (doi:10.7910/DVN/NH5S2I, doi:10.7910/DVN/K7760H, CC BY 4.0), with US Census Bureau 2020 block populations and block equivalency files (public domain). Official figures: Texas Legislative Council (2024 on the 2026 lines); Louisiana, New Jersey, California and Washington election offices (county totals). Certified results transcribed by Wikipedia (CC BY-SA 4.0): Maine 2024 by district: 2024 United States presidential election in Maine (revision 1382530995); Indiana county totals: 2024 United States presidential election in Indiana (revision 1382505975); Oregon county totals: 2024 United States presidential election in Oregon (revision 1382605746).

District lines: US Census Bureau TIGER/Line 2026 (120th Congress) and 2025 cartographic boundary files (119th Congress), public domain.

Members: unitedstates/congress-legislators (CC0).

Counties: US Census Bureau 2024 cartographic boundary file (public domain); 2024 county results summed from the same MEDSL precinct returns, with the official county totals above.

Demographics: US Census Bureau, American Community Survey 5-year estimates 2020-2024 (public domain).

2028 candidates: Federal Election Commission (public domain).

Photos: official portraits, public domain (US government); see Photo credits.

PollCheck US. Data through November 5, 2026. Photo credits