Popular vote by congressional district. As this is a first-past-the-post election, seat totals are not determined by total popular vote in the state, but instead by results in each congressional district.
In 2018, for the first time in at least 25 years, the Texas Democratic Party fielded at least one candidate in each of the state's 36 congressional districts.[1] The state congressional delegation changed from a 25–11 Republican majority to a 23–13 Republican majority, the most seats that Democrats had won in the state since 2006. Democrats won almost 47% of the vote, likely due to the down-ballot effect of Representative Beto O'Rourke's Senate candidacy, in which he won 48.3% of the vote, but also because four Democrat incumbents faced no Republican opposition in their general elections.
Turnout was also more than doubled from the last midterm election.
The first district is located in East Texas, including Deep East Texas, and takes in Longview, Lufkin, and Tyler. Incumbent Republican Louie Gohmert, who had represented the district since 2005, ran for re-election. He was re-elected with 73.9% of the vote in 2016. The district had a PVI of R+25.
This district is located in Greater Houston, including parts of northern and western Houston, as well as Humble, Kingwood, and Spring. Incumbent Republican Ted Poe, who had represented the district since 2005, did not run for re-election. He was re-elected with 60.6% of the vote in 2016. The district had a PVI of R+11.
The 3rd district is located in the Dallas–Fort Worth metroplex, including the Dallas suburbs of Frisco, McKinney, and Plano. Incumbent Republican Sam Johnson, who had represented the district since 1991, did not run for re-election. He was re-elected with 61.2% of the vote in 2016. The district had a PVI of R+13.
The 4th district is located in Northern and Northeastern Texas, including Paris, Sherman, and Texarkana. Incumbent Republican John Ratcliffe, who had represented the district since 2015, ran for re-election. He was re-elected with 88.0% of the vote in 2016. The district had a PVI of R+28, making it one of the most conservative districts in the nation.
The 5th district stretches from the eastern Dallas suburbs, including Mesquite, down into East Texas including Athens and Palestine. Incumbent Republican Jeb Hensarling, who had represented the district since 2003, announced in October 2017 that he was going to retire and not seek re-election to another term.[45] He was re-elected with 80.6% of the vote in 2016. The district had a PVI of R+16.
The 6th district is located in the Dallas–Fort Worth metroplex, including parts of Arlington, as well as Dalworthington Gardens and Mansfield. The district also stretches southward, taking in Corsicana and Ennis. Incumbent Republican Joe Barton, who had represented the district since 1985, announced in November 2017 that he would not run for re-election.[48] He was re-elected with 58.3% of the vote in 2016. The district had a PVI of R+9.
The 7th district includes parts of western Houston and Bellaire. Incumbent Republican John Culberson, who had represented the district since 2001, ran for re-election. He was re-elected with 56.2% of the vote in 2016. The district had a PVI of R+7.
In February 2018, the Democratic Congressional Campaign Committee, citing concerns about Laura Moser's electability in the general election, called attention to some of her past statements that they deemed controversial.[64] That action was condemned by DNC chair Tom Perez[65] and Our Revolution, which endorsed Moser a few days later.[66]