Republican Brian Boquist has filed to run in the May primary for the Oregon Senate after two terms in the House.
The District 12 Senate seat now is held Republican Gary George of Newberg, who has said he will not seek a fourth term, citing health issues.
Boquist's House district takes in the southern half of George's district.
Frustrated with the GOP's minority House status, Boquist had said he wouldn't seek re-election, although the Senate also is controlled by the Democrats.
Boquist filed papers last Monday without a formal announcement.
George was first elected in 1996 in his Republican district. He earned a reputation as an energetic lawmaker who connected easily with constituents but was something of a maverick.
It's not clear whether Rep. Donna Nelson, R-McMinnville, whose district takes in most of Yamhill County, will run again.
She did not return inquiries from the McMinnville News-Register newspaper asking about her plans.
Yamhill software developer and restaurant owner Jim Weidner, also a Republican, filed for that seat in September and has been working the district hard. There is no Democratic contender.
"Jim's working very hard," said state party official Nick Smith. "He was out there first and early, and he's got some pretty strong support locally."
Oregon House member Boquist to run for Senate