John Lively, a Democrat, who has represented the Springfield area in the Oregon House since 2013, will not seek another term.
“Based on many factors, one of which is my age, I have decided to retire when my term ends in January 2027,” Lively said in a newsletter.
He will turn 79 later this month.
Three candidates have already filed to run for the seat in Oregon House District Seven: Democrats Ky Fireside and Kori Rodley and Republican Adam Wilson.
There are 51,458 registered voters in the district, with a rough breakdown of 40% no-party affiliation, 30% Democrat, 22% Republican and 8% from other parties.