Oregon's 13th Senate district explained

District 13 of the Oregon State Senate comprises parts of Clackamas, Washington, and Yamhill counties centered around Sherwood, Tigard, and Wilsonville. It contains Oregon House districts 25 and 26. It is currently represented by Democrat Aaron Woods of Wilsonville.

Election results

District boundaries have changed over time. Therefore, senators before 2021 may not represent the same constituency as today. From 1993 until 2023, it covered various areas in the northern Willamette valley stretching from Hillsboro to Keizer.

The current district shrunk from its previous iterations due to population growth in Washington County, losing Keizer and all land in Marion County as well as all parts of Hillsboro.

The results are as follows:^[1]

Year	Candidate	Party	Percent	Opponent	Party	Percent
1982		Joyce Cohen		Democratic		55.6%		Richard Smelser		Republican		44.4%
1986		Joyce Cohen		Democratic		53.8%		Bob Tiernan		Republican		46.2%
1990		Joyce Cohen		Democratic		52.0%		Bob Tiernan		Republican		48.0%
1994		Randy Miller		Republican		66.4%		Robert L. Lumm		Democratic		33.6%
1998		Randy Miller		Republican		59.3%		Ken Libbey		Democratic		40.7%
2002		Charles Starr		Republican		59.9%		Ken Crowley		Democratic		40.1%
2006		Larry George		Republican		59.0%		Rick Ross		Democratic		40.8%
2010		Larry George		Republican		63.2%		Timi Parker		Democratic		36.7%
2014		Kim Thatcher		Republican		57.7%		Ryan Howard		Democratic		42.1%
2018		Kim Thatcher		Republican		55.9%		Sarah Grider		Democratic		43.9%
2022		Aaron Woods		Democratic		58.0%		John Velez		Republican		41.9%

Notes and References

1. Web site: OR State Senate 13. Our Campaigns. August 7, 2017.