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Seth Moulton

U.S. House · MA-6 · Democrats · since 2025

also

Candidate for U.S. House · MA-6

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Biography

Overview

Seth Moulton is a Democratic representative for Massachusetts's 6th congressional district since 2015. A Marine Corps combat veteran, Moulton graduated from Harvard College in 2001 with a degree in physics and served four tours in Iraq before earning master's degrees in business and public administration from Harvard. His district includes Boston's northern suburbs such as Andover, Marblehead, and Peabody, and his hometown of Salem.

Career

Moulton authored legislation creating the National 988 Suicide and Mental Health Crisis Hotline and co-sponsored the Brandon Act to improve mental health access for active duty service members. He co-sponsored the WELCOMED Act to provide benefits for Afghan Special Immigrant Visa recipients, which President Biden signed into law in October 2021. He secured passage of HR 2215, the Salem Maritime National Historical Park Redesignation and Boundary Study Act. In 2018, he founded Serve America PAC, which raised over $7.5 million to elect Democratic candidates with national service experience, helping flip 15 Republican seats to Democratic in 2018. He spearheaded an effort to oust Nancy Pelosi as House Democratic leader in 2018, though the effort failed.

Prior political experience

Moulton was first elected in 2014, winning the Democratic primary against incumbent John F. Tierney with 50.8% of the vote. He won the general election with 55.0% against Republican Richard Tisei. He ran unopposed for reelection in 2016. In 2018, he defeated Republican Joseph Schneider with 65.2% of the vote. In 2020, he won his primary with 78% against Democratic challengers and defeated Republican John Paul Moran with 65.4% in the general election. In 2022, he defeated Republican Bob May with 62.9% of the vote. In 2024, he ran unopposed and won reelection. On October 15, 2025, Moulton announced his candidacy for the U.S. Senate, challenging incumbent Democrat Ed Markey in the 2026 Massachusetts Democratic primary.

Biographical material adapted from the Wikipedia article (retrieved April 29, 2026), available under CC BY-SA 4.0.

Ideology

Liberal–Conservative (DW-NOMINATE dim 1)

Liberal
Conservative
119th Congress-0.286

Secondary axis (DW-NOMINATE dim 2)(?)

−1
+1
-0.044
Source: Voteview DW-NOMINATE · 324 scored votes

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Officeholding history

TermSeatTerm datesTerminationPredecessorSuccessor
6thU.S. House MA-62025–presentIn progressSeth Moulton—
5thU.S. House MA-62023–2025Term endedSeth MoultonSeth Moulton
4thU.S. House MA-62021–2023Term endedSeth MoultonSeth Moulton
3rdU.S. House MA-62019–2021Term endedSeth MoultonSeth Moulton
2ndU.S. House MA-62017–2019Term endedSeth MoultonSeth Moulton
1stU.S. House MA-62015–2017Term ended—Seth Moulton

Committee assignments

  • Strategic Forces
    HouseRanking Member· 2025–present
  • Cyber, Information Technologies, and Innovation
    House· 2025–present
  • Railroads, Pipelines, and Hazardous Materials
    House· 2025–present
  • House Committee on Armed Services
    House· 2025–present
  • House Select Committee on the Strategic Competition Between the United States and the Chinese Communist Party
    House· 2025–present
  • House Committee on Transportation and Infrastructure
    House· 2025–present
  • Highways and Transit
    House· 2025–present

Current term legislation

Bills sponsored this term10

Bills cosponsored this term10

Elections

YearSeatResultVote shareField
2024U.S. House MA-6Pending73.23%