2018 United States House of Representatives elections in Connecticut

The 2018 United States House of Representatives elections in Connecticut were held on Tuesday, November 6, 2018, to elect the five U.S. representatives from the state of Connecticut, one from each of the state's five congressional districts. The elections coincided with the gubernatorial election, as well as other elections to the House of Representatives, elections to the United States Senate, and various state and local elections.

Overview
Results of the 2018 United States House of Representatives elections in Connecticut by district:

District 1
The 1st district is located in the north-central part of the state, and is anchored by the state capital of Hartford. It includes parts of Hartford, Litchfield, and Middlesex counties. The incumbent is Democrat John Larson, who has represented the district since 1999. He was re-elected to a tenth term with 64% of the vote in 2016.

Democratic primary

 * John Larson, incumbent

Republican primary

 * Jennifer Nye

District 2
The 2nd district is located in the eastern part of the state, and includes all of New London, Tolland, and Windham counties and parts of Hartford, Middlesex, and New Haven counties. The incumbent is Democrat Joe Courtney, who has represented the district since 2007. He was re-elected to a sixth term with 63% of the vote in 2016. The National Republican Congressional Committee has outlined this district as one of the 36 Democratic-held districts it is targeting in 2018. Republican gubernatorial nominee Bob Stefanowski won the district in the concurrent gubernatorial election.

Democratic primary

 * Joe Courtney, incumbent

Republican primary

 * Dan Postemski, veteran and chairman of the Hampton Republican Town Committee

District 3
The 3rd district is located in the central part of the state and contains the city of New Haven and its surrounding suburbs. It includes parts of Fairfield, Middlesex, and New Haven counties. The incumbent is Democrat Rosa DeLauro, who has represented the district since 1991. She was re-elected to a fourteenth term with 69% of the vote in 2016.

Democratic primary

 * Rosa DeLauro, incumbent

Republican primary

 * Angel Cadena, Marine veteran and Republican nominee for CT-3 in 2016

District 4
The 4th district is located in the southwestern part of the state, extending from Bridgeport, the largest city in the state, to Greenwich. It includes parts of Fairfield and New Haven counties. The incumbent is Democrat Jim Himes, who has represented the district since 2009. He was re-elected to a fifth term with 60% of the vote in 2016.

Democratic primary

 * Jim Himes, incumbent

Republican primary

 * Harry Arora, investment firm founder

District 5
The 5th district is located in the northwestern part of the state and includes parts of Fairfield, Hartford, Litchfield, and New Haven counties. The incumbent was Democrat Elizabeth Esty, who represented the district since 2013. She was re-elected to a third term with 58% of the vote in 2016. Esty did not run for reelection in 2018. Republican gubernatorial nominee Bob Stefanowski won the district in the concurrent gubernatorial election.

Democratic primary
Declared
 * Mary Glassman, former First Selectman of Simsbury, and candidate for lieutenant governor in 2006 and 2010
 * Jahana Hayes, 2016 National Teacher of the Year

Declined
 * Elizabeth Esty, incumbent congresswoman

Republican primary
Declared
 * Rich DuPont, businessman
 * Ruby Corby O’Neill, retired psychology professor and political activist
 * Manny Santos, former mayor of Meriden