Oregon's 20th House district

District 20 of the Oregon House of Representatives is one of 60 House legislative districts in the state of Oregon. As of 2021, the boundary for the district includes portions of Marion and Polk counties. The district contains west and south Salem, Independence, and Monmouth and includes Western Oregon University. The current representative for the district is Democrat Paul Evans of Monmouth.

Election results
District boundaries have changed over time. Therefore, representatives before 2021 may not represent the same constituency as today. General election results from 2000 to present are as follows: