2020 Oregon House of Representatives election

The 2020 Oregon House of Representatives election were held on Tuesday, November 3, 2020, with the primary election being held on May 19, 2020. Voters in the 60 districts of the Oregon House of Representatives elected their representatives. The elections coincided with the elections for other offices, including for the Oregon State Senate and for U.S. President.

The Democratic Party kept their majority. The Oregon Legislature does not have term limits.

Background
Democrats have held the Oregon House since 2007 and the chamber was not considered competitive in 2020.

Electoral system
The 60 members of the Oregon State House are elected from single-member districts by first-past-the-post voting to two-year terms. Contested nominations of the Democratic and Republican parties for each district were determined by an open primary election. Minor-party and independent candidates were nominated by petition and write-in candidates had to file a request with the Secretary of State's office for votes for them to be counted.

Close races
Districts where the margin of victory was under 10%:
 * 1) District 52, 0.21%
 * 2) District 31, 1.2%
 * 3) District 20, 3.94%
 * 4) District 11, 4.32%
 * 5) District 10, 4.93%
 * 6) District 50, 7.3%
 * 7) District 32, 8.44%
 * 8) District 19, 8.96%
 * 9) District 40, 9.37%
 * 10) District 51, 9.68%