The 2018 United States House of Representatives elections in Oregon were held on Tuesday, November 6, 2018, to elect the five U.S. Representatives from the U.S. state of Oregon; one from each of the state's five congressional districts. Primaries were held on May 15, 2018. The elections and primaries coincided with the elections and primaries of other federal and state offices.
All five incumbents were re-elected, leaving Oregon at a 4-1 split in favor of the Democrats.
The incumbent, Republican Greg Walden of Hood River, was re-nominated in the May 2018 primary election. He has represented the district since 1999, and was re-elected with 72% of the vote in 2016. He has faced little serious opposition in recent years, but in 2018 has been heavily criticized by constituents for helping to write a bill to repeal and replace the Affordable Care Act.
Democrat Jamie McLeod-Skinner of Terrebonne won her party's nomination in May 2018. She has criticized Walden for skipping public events and declining to take strong stands on behalf of his constituents. Incumbent Walden agreed in July to debate McLeod-Skinner, but as of early September, no debate has been scheduled.
As of May 2018, national handicappers consider the district "safe Republican."
The 3rd district is centered around the city of Portland, and includes the surrounding suburbs such as Estacada, Fairview, and Gresham. This is the most Democratic-friendly district in the state with a PVI of D+24. The incumbent is Democrat Earl Blumenauer, who has represented the district since 1996. He was re-elected with 72% of the vote in 2016. He will face Independent Party nominee Marc Koller in the November 2018 general election.
The 4th district is located in the South Coast region of Oregon. Cities in this district include Coos Bay, Eugene, and Roseburg. This is a highly competitive district with an EVEN PVI. The incumbent is Democrat Peter DeFazio, who has represented the district since 1987. He was re-elected with 55% of the vote in 2016. He will face Art Robinson for the fifth time; Robinson has been the Republican nominee in the district in every election since 2010.
The 5th district is centered around the state capital, Salem. This district stretches from the Central Coast region to the southern Portland suburbs, including Lake Oswego, Wilsonville, and Oregon City. This is a highly competitive district with an EVEN PVI. The incumbent is Democrat Kurt Schrader, who has represented the district since 2009. He was re-elected with 53% of the vote in 2016. He will face Republican nominee Mark Callahan in the November 2018 general election.