The 2018 United States House of Representatives elections in Missouri were held on November 6, 2018, to elect the eight U.S. representatives from the state of Missouri, one from each of the state's eight congressional districts.
The 1st district includes all of St. Louis City and much of Northern St. Louis County. Incumbent Democrat Lacy Clay, who had represented the district since 2001, ran for re-election. He was re-elected with 75% of the vote in 2016. The district had a PVI of D+29.
The 2nd district includes the suburbs south and west of St. Louis City. Incumbent Republican Ann Wagner, who had represented the district since 2013, ran for re-election. She was re-elected with 59% of the vote in 2016. The district had a PVI of R+8.
Wagner was considered likely to run for the U.S. Senate in 2018 instead of running for re-election,[6][7] but opted to seek re-election to the House.[8]
At the filing deadline - one candidate, Noga Sachs, had filed with the Federal Election Commission to run in the Republican primary. Despite an attempt by the Missouri Republican Party to remove her from the ballot in April 2018, she remained on the ballout.[9]
The third district stretches from exurbs of St. Louis to the state capital Jefferson City. Incumbent Republican Blaine Luetkemeyer, who had represented the district since 2009, ran for re-election. He was re-elected with 68% of the vote in 2016. The district had a PVI of R+18.
The fourth district takes in Columbia and much of rural west-central Missouri. Incumbent Republican Vicky Hartzler, who had represented the district since 2011, ran for re-election. He was re-elected with 68% of the vote in 2016. The district had a PVI of R+17.
The fifth district encompasses most of Jackson County, the southern part of Clay County, and three other rural counties to the east. Incumbent Democrat Emanuel Cleaver, who had represented the district since 2005, ran for re-election. He was re-elected with 58% of the vote in 2016. The district had a PVI of D+7.
The sixth district encompasses rural northern Missouri, St. Joseph and much of Kansas City north of the Missouri River. Incumbent Republican Sam Graves, who had represented the district since 2001, ran for re-election. He was re-elected with 68% of the vote in 2016. The district had a PVI of R+16.
The seventh district takes in Springfield, Joplin, and much of the rest of rural southwestern Missouri. Incumbent Republican Billy Long, who had represented the district since 2011, ran for re-election. He was re-elected with 68% of the vote in 20`6. The district had a PVI of R+23.
The eighth district is the most rural district of Missouri, taking in all of the rural southeastern and south-central part of the state. It has a PVI of R+24, the most strongly Republican district of Missouri. Incumbent Republican Jason Smith, who had represented the district since 2013, ran for re-election. He was re-elected with 74% of the vote in 2016. The district had a PVI of R+24.
^"Red to Blue". dccc.org/. DCCC. Archived from the original on October 31, 2018. Retrieved July 20, 2023.
^"2018 ENDORSED CANDIDATES". gunsensevoter.org. Everytown for Gun Safety Action Fund. Archived from the original on October 25, 2018. Retrieved August 4, 2023.