1980Final results
1980 election for Oregon Senate District 10
Oregon State Senate · Oregon
Jim Gardner (D) won with 59.1% of the vote, defeating William Sizemore (R) by 18.1 points.
Jim GardnerDemocrat · winner · incumbent
59.1%18,258
William SizemoreRepublican
40.9%12,651
30,914 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1980
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET