2018 United States House of Representatives elections in Louisiana

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

Like most Louisiana elections, these were conducted using a jungle primary that occurred on November 6, where all candidates ran on the same ballot in the primary, regardless of party. Any candidate who earned an absolute majority of the vote in the primary would be automatically declared the winner of the election. However, if in any given congressional district no candidate gained an absolute majority of the votes, a runoff election between the top two candidates within said congressional district would have been held on December 8. Nevertheless, the incumbent Representatives in all six districts each earned over 50% of the vote in the jungle primaries, so no runoffs occurred.

By district
Results of the 2018 United States House of Representatives elections in Louisiana by district:

District 1
The 1st district is located in the Greater New Orleans area, covering much of the southeastern area of Louisiana along the Mississippi River Delta, taking in Dulac, Hammond, and Slidell. This is a heavily Republican district with a PVI of R+24. Incumbent Steve Scalise has represented this district since 2008 and was reelected in 2016 with 75%.

District 2
The 2nd district stretches from New Orleans westward towards Baton Rouge and the surrounding areas. This is a heavily Democratic district with a PVI of D+25. Incumbent Democrat Cedric Richmond has represented this district since 2011 and won reelection in 2016 with 70%.

District 3
The 3rd district is located within the Acadiana region and includes Lafayette, Lake Charles, and New Iberia. Incumbent Republican Clay Higgins was initially elected in 2016 with 56% of the vote. This is a reliably Republican district with a PVI of R+20.

District 4
The 4th district is located in Northwest Louisiana, taking in the Ark-La-Tex region, including Minden and Shreveport. This is a heavily Republican district with a PVI of R+13. Incumbent Republican Mike Johnson was initially elected in 2016 with 65% of the vote.

District 5
The 5th district is located in the northern Louisiana region, including the Monroe metro area. The district continues to stretch down into Central Louisiana taking in Alexandria and then expanding eastward into the Florida Parishes. This is a moderate to solid Republican district with a PVI of R+15. Incumbent Republican Ralph Abraham was initially elected in 2014, and was reelected in 2016 with 81% of the vote.

District 6
The 6th district is located within the Baton Rouge metropolitan area, including Central City, Denham Springs, and parts of the state capital, Baton Rouge. The district also stretches down into Acadiana taking in Thibodaux and parts of Houma. This is a strong Republican district with a PVI of R+19. Republican Garret Graves has represented this district since 2015 and was reelected in 2016 with 63% of the vote.