Massachusetts's 3rd Congressional District

Massachusetts's 3rd Congressional District is represented by Lori Trahan (Democrat), who has held the seat since 2019. Trahan has an overall VoteSee report card grade of F, voted in 96% of roll-call votes on bills this Congress, and votes with the Democratic majority 99% of the time. The district includes Lowell, Lawrence, and Haverhill. It takes in all or part of 3 counties, and 55% of residents live in Middlesex County. About 785,000 people live in the district, and the median household income is $99,663.

Current Representative

Lori Trahan (Democrat) has represented Massachusetts's 3rd Congressional District since 2019.

VoteSee report card grade: F
Attendance in the 119th Congress: 96% of roll-call votes on bills
Votes with the Democrat majority: 99%

See Lori Trahan's full voting record and issue positions →

2026 Election

U.S. House: Massachusetts 3rd District

Winner: Lori Trahan.

Incumbent Lori Trahan is running for re-election. 3 candidates were on the Nov 3, 2026 ballot.

Lori Trahan (Democratic), incumbent: raised $1.9M, $1.8M cash on hand; VoteSee report card F; 96% attendance; votes with the Democratic majority 99% of the time
Gary Grossi (Republican): raised $9K, $7K cash on hand
Dennis Conlon (Independent)

Polls: No public polls

See the full 2026 race →

District Demographics

Population: 785,403
Median household income: $99,663
Median age: 39
Median home value: $494,500
Bachelor's degree or higher: 40%

Source: American Community Survey 2020–2024 5-year estimates, 119th Congress boundaries.

How Trahan Voted Recently

No on Providing for consideration of the bill (H.R. 1013) to amend the Federal securities laws to enhance 403(b) plans, and for other purposes. (Nov 10, 2026) — Passed
Yea on American Enrichment Deployment Act (Nov 9, 2026) — Passed
Yea on Nuclear REFUEL (Recycling Efficient Fuels Utilizing Expedited Licensing) Act (Nov 9, 2026) — Passed
Yea on Retire through Ownership Act (Sep 16, 2026) — Passed
Yea on Water Resources Development Act of 2026 (Sep 16, 2026) — Passed

Breaks with the Democrat majority

No on National Defense Authorization Act for Fiscal Year 2027 (Jul 21, 2026) — Agreed to
Yea on Directing the President pursuant to section 5(c) of the War Powers Resolution to remove United States Armed Forces from Lebanon. (Jun 4, 2026) — Failed
Yea on Cashless Bail Reporting Act (May 14, 2026) — Passed

Who Held This Seat Before

Members of Congress who previously represented Massachusetts's 3rd Congressional District. District lines are redrawn after each census, so earlier members may have represented a different area under this number.

Niki Tsongas — Democrat (2013–2019)
Jim McGovern — Democrat (1997–2013)
Peter Blute — Republican (1993–1997)
Joseph Early — Democrat (1975–1993)
Harold Donohue — Democrat (1973–1975)
Robert Drinan — Democrat (1971–1973)
Philip Philbin — Democrat (1943–1971)
Joseph Casey — Democrat (1935–1943)
Frank Foss — Republican (1925–1935)
Calvin Paige — Republican (1913–1925)
William Wilder — Republican (1913–1915)
John Thayer — Democrat (1911–1913)

Where the District Is

Massachusetts's 3rd Congressional District covers 750 square miles of land. Boundaries are for the current (119th) Congress.

Counties

Middlesex County (part): 55% of residents
Essex County (part): 27% of residents
Worcester County (part): 18% of residents

Largest communities

Lowell
Lawrence
Haverhill
Methuen Town
Fitchburg
Marlborough
Gardner
Hudson

Neighboring Districts

Massachusetts's 2nd Congressional District — James McGovern (Democrat)
Massachusetts's 5th Congressional District — Katherine Clark (Democrat)
Massachusetts's 6th Congressional District — Seth Moulton (Democrat)
New Hampshire's 1st Congressional District — Chris Pappas (Democrat)
New Hampshire's 2nd Congressional District — Maggie Goodlander (Democrat)

Massachusetts's U.S. Senators

Elizabeth Warren — Democrat, senior senator
Edward Markey — Democrat, junior senator