The 2018 United States House of Representatives elections in Massachusetts were held on November 6, 2018, electing the nine U.S. representatives from the Commonwealth of Massachusetts, one from each of the state's nine congressional districts. The elections coincided with the elections of other offices, including a gubernatorial election, other elections to the House of Representatives, elections to the United States Senate, and various state and local elections. The primary election for contested nominations was held on September 4, 2018.

Quick Facts All 9 Massachusetts seats to the United States House of Representatives, Majority party ...

2018 United States House of Representatives elections in Massachusetts

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All 9 Massachusetts seats to the United States House of Representatives
Majority party Minority party   Party Democratic Republican Last election 9 0 Seats won 9 0 Seat change Popular vote 1,943,595 497,953 Percentage 78.21% 20.03% Swing 1.52% 4.69%
Democratic   50–60%   60–70%   70–80%   90>%

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On the night of the election, all nine races were declared in favor of the Democratic Party candidates.^[1] Seven seats went to incumbents seeking re-election: Richard Neal (1st District), Jim McGovern (2nd), Joseph Kennedy III (4th), Katherine Clark (5th), Seth Moulton (6th), Stephen F. Lynch (8th), and Bill Keating (9th). In the 7th District, Ayanna Pressley ran unopposed after defeating the incumbent in the primary election. In the 3rd District, where the incumbent did not seek re-election, Lori Trahan was declared the winner.^[2]

Quick Facts Nominee, Party ...

2018 Massachusetts's 1st congressional district election

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Nominee Richard Neal Party Democratic Popular vote 211,790 Percentage 97.6%

Municipality results Neal:      >90%

U.S. Representative before election Richard Neal Democratic Elected U.S. Representative Richard Neal Democratic

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The 1st congressional district is located in western and Central Massachusetts. The largest Massachusetts district in area, it covers about 1/3 of the state and is more rural than the rest. It has the state's highest point, Mount Greylock. The district includes the cities of Springfield, West Springfield, Pittsfield, Holyoke, and Westfield. The district has a PVI of D+12. The incumbent is Democrat Richard Neal, who has represented the district since 2013 and previously represented the 2nd district from 1989 to 2013. He was re-elected with 73% of the vote in 2016. For the 4th election cycle in a row, no Republicans filed to run in this district.

Quick Facts Nominee, Party ...

2018 Massachusetts's 2nd congressional district election

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Nominee Jim McGovern Tracy Lovvorn Party Democratic Republican Popular vote 191,332 93,391 Percentage 67.1% 32.8%

County results Municipality results Precinct results McGovern:      50–60%      60–70%      70–80%      80–90%      >90% Lovvorn:      50–60%

U.S. Representative before election Jim McGovern Democratic Elected U.S. Representative Jim McGovern Democratic

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The 2nd congressional district is located in central Massachusetts. It contains the cities of Worcester, which is the second-largest city in New England after Boston, and Northampton in the Pioneer Valley. The district has a PVI of D+13. The incumbent is Democrat Jim McGovern, who has represented the district since 2013 and previously represented the 3rd district from 1997 to 2013. He was re-elected unopposed with 98% of the vote in 2016.

Quick Facts Nominee, Party ...

2018 Massachusetts's 3rd congressional district election

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Nominee Lori Trahan Rick Green Party Democratic Republican Popular vote 173,175 93,445 Percentage 62.0% 33.4%

County results Municipality results Precinct results Trahan:      40–50%      50–60%      60–70%      70–80%      80–90% Green:      40–50%      50–60%

U.S. Representative before election Niki Tsongas Democratic Elected U.S. Representative Lori Trahan Democratic

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The 3rd congressional district is located in northeastern and central Massachusetts. It contains the Merrimack valley including Lowell, Lawrence and Haverhill. The district has a PVI of D+9. The incumbent is Democrat Niki Tsongas, who has represented the district since 2013 and previously represented the 5th district from 2007 to 2013. She was re-elected with 69% of the vote in 2016.

Tsongas is retiring, and did not seek re-election in 2018.^[4]

The 4th congressional district is located mostly in southern Massachusetts. It contains Bristol, Middlesex, Norfolk, Plymouth and Worcester counties. The district has a PVI of D+9. The incumbent is Democrat Joe Kennedy III, who has represented the district since 2013. He was re-elected with 70% of the vote in 2016.

Kennedy is running for re-election.^[41] No Republicans filed to run.

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2018 Massachusetts's 5th congressional district election

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Nominee Katherine Clark John Hugo Party Democratic Republican Popular vote 236,243 74,856 Percentage 75.9% 24.0%

County results Municipality results Precinct results Clark:      50–60%      60–70%      70–80%      80–90%      >90%

U.S. Representative before election Katherine Clark Democratic Elected U.S. Representative Katherine Clark Democratic

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The 5th congressional district is located in eastern Massachusetts. It contains Middlesex, Suffolk and Worcester counties. The district has a PVI of D+18. The incumbent is Democrat Katherine Clark, who has represented the district since winning a special election in 2013. She was re-elected unopposed with 99% of the vote in 2016.

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2018 Massachusetts's 6th congressional district election

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Nominee Seth Moulton Joseph Schneider Party Democratic Republican Popular vote 217,703 104,798 Percentage 65.2% 31.4%

County results Municipality results Precinct results Moulton:      50–60%      60–70%      70–80%      80–90% Schneider:      40–50%

U.S. Representative before election Seth Moulton Democratic Elected U.S. Representative Seth Moulton Democratic

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The 6th congressional district is located in northeastern Massachusetts. It contains most of Essex County, including the North Shore and Cape Ann. The district has a PVI of D+6. The incumbent is Democrat Seth Moulton, who has represented the district since 2015. He was re-elected unopposed with 98% of the vote in 2016.

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2018 Massachusetts's 7th congressional district election

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Nominee Ayanna Pressley Party Democratic Popular vote 216,557 Percentage 98.2%

U.S. Representative before election Mike Capuano Democratic Elected U.S. Representative Ayanna Pressley Democratic

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The 7th congressional district is located in eastern Massachusetts. It contains the northern three-quarters of the city of Boston, the city of Somerville and parts of the city of Cambridge. The district has a PVI of D+34. The incumbent was Democrat Mike Capuano, who has represented the district since 2013 and previously represented the 8th district from 1999 to 2013. He was re-elected unopposed with 99% of the vote in 2016.

In his bid for re-nomination by the Democratic Party, Capuano was defeated by Boston city councillor Ayanna Pressley.^[49] The primary victory was a surprise,^[50] as the last poll before the election showed Capuano with a significant lead, 48% to 35%.^[51] Part of the reason the polls may have been inaccurate is a surge in the number of primary voters. 24% of District 7 voters in the 2018 primary had not voted in the five previous primaries, and that percentage was disproportionately of Hispanic and Asian ethnicities.^[52]

The 8th congressional district is located in eastern Massachusetts. It contains the southern quarter of the city of Boston and many of its southern suburbs. The incumbent is Democrat Stephen Lynch, who has represented the district since 2013 and previously represented the 9th district from 2001 to 2013. The district has a PVI of D+10. He was re-elected with 72% of the vote in 2016.

Lynch is running for re-election.^[88] No Republicans filed to run.

Quick Facts Nominee, Party ...

2018 Massachusetts's 9th congressional district election

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Nominee Bill Keating Peter Tedeschi Party Democratic Republican Popular vote 192,347 131,463 Percentage 59.4% 40.6%

County results Municipality results Precinct results Keating:      50–60%      60–70%      70–80%      80–90%      >90% Tedeschi:      50–60%

U.S. Representative before election Bill Keating Democratic Elected U.S. Representative Bill Keating Democratic

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The 9th congressional district is located in eastern Massachusetts, including Cape Cod and the South Coast. It contains all of Barnstable, Dukes and Nantucket counties and parts of Bristol and Plymouth counties. The district has a PVI of D+4. The incumbent is Democrat Bill Keating, who has represented the district since 2013 and previously represented the 10th district from 2011 to 2013. He was re-elected with 56% of the vote in 2016.