House districts / Massachusetts


Massachusetts's 3rd congressional district

MA-3. Same lines in 2026 as in 2022.

Lori Trahan
Current member
Lori Trahan
Democrat. In office since 2019.
2026 lines

Fundraising

1 other 2026 candidate filed reports (primary candidate). 2 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 58.1%Trump 39.2%2.6%D+18.9
2020Biden 62.4%Trump 35.1%2.5%D+27.3
2016Clinton 56.7%Trump 35.4%7.9%D+21.3

Who lives here

MeasureThis districtUS
People
Population
785,403
Adults (18+)
613,372
Citizens, % of adults
89.0%
92.1%
Age, % of adults
18 to 29
19.3%
20.3%
30 to 44
26.4%
25.9%
45 to 64
34.1%
31.8%
65 and over
20.1%
22.0%
Race and Hispanic origin, % of residents
White
59.3%
57.4%
Black
4.1%
11.9%
Hispanic
22.9%
19.3%
Asian
8.3%
5.9%
Other or more than one
5.5%
5.5%
Education and income
Bachelor's degree or higher, % of 25+
40.0%
35.7%
Median household income
$99,663
$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
2024Lori Trahan Democrat97.5% others 2.5%D+94.9
2022Lori Trahan Democrat63.5%Dean A. Tran Republican others 0.1%36.4%D+27.1
Earlier lines, elections 2012-2020 seat count changed from 10 to 9 after the census
2020Lori Trahan Democrat97.7% others 2.3%D+95.5
2018Lori Loureiro Trahan Democrat62.0%Rick Green Republican others 4.5%33.5%D+28.6
2016Niki Tsongas Democrat68.7%Ann Wofford Republican others 0.1%31.2%D+37.5
2014Niki Tsongas Democrat63.0%Roseann L. Ehrhard Wofford Republican others 0.1%37.0%D+26.0
2012Niki Tsongas Democrat63.3%Jonathan A. Golnik Republican others 4.1%32.6%D+30.7
Earlier lines, elections 2002-2010 post-census redistricting
2010James P. McGovern Democrat56.5%Martin A. Lamb Republican others 4.4%39.2%D+17.3
2008James P. McGovern Democrat75.0% others 25.0%D+50.1
2006James P. McGovern Democrat77.6% others 22.4%D+55.3
2004James P. McGovern Democrat67.2%Ronald A. Crews Republican others 4.8%28.0%D+39.1
2002James P. McGovern Democrat73.3% others 26.7%D+46.7
Earlier lines, elections 1992-2000 seat count changed from 11 to 10 after the census
2000James P. McGovern Democrat76.5% others 23.5%D+53.0
1998James P. McGovern Democrat56.9%Matthew J. Amorello Republican others 1.6%41.5%D+15.4
1996James P. McGovern Democrat52.9%Peter Blute Republican others 1.7%45.4%D+7.6
1994Peter Blute Republican54.6%Kevin O'Sullivan Democrat others 1.2%44.2%R+10.4
1992Peter Blute Republican50.4%Joseph D. Early Democrat others 5.3%44.3%R+6.1
Earlier lines, elections 1982-1990 seat count changed from 12 to 11 after the census
1990Joseph D. Early Democrat65.5% others 34.5%D+31.1
1988Joseph D. Early Democrat99.8% others 0.2%D+99.6
1986Joseph D. Early Democrat75.0% others 25.0%D+50.1
1984Joseph D. Early Democrat67.4%Kenneth J. Redding Republican32.6%D+34.8
1982Joseph D. Early Democrat99.9% others 0.1%D+99.8
Earlier lines, elections 1976-1980
1980Joseph D. Early Democrat72.3%David G. Skehan Republican27.7%D+44.6
1978Joseph D. Early Democrat75.2%Charles K. Macleod Republican others 0.1%24.7%D+50.5
1976Joseph D. Early Democrat100.0%D+99.9

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