The Associated Press called the race for Kotek Thursday evening.
The Associated Press has not yet called the race and Republican Christine Drazan hasn’t conceded, but Kotek’s lead continues to grow.
Democrats will maintain their legislative majorities but not a supermajority in the Senate.
Supporters behind a fourth measure that would tighten the state’s gun laws have also declared victory while a measure making health care a right is split.
Nonaffiliated candidate Betsy Johnson was a distant third, but the race remains too close to call.
If Tuesday’s results hold, Salem will have a politically mixed delegation, with three new faces in the House and two state senators winning re-election.
Deanna Gwyn was leading Dynee Medlock by fewer than 200 votes in the ward 4 council race following initial ballot counts Tuesday night.
Democrat Andrea Salinas was up in the race to represent the 6th Congressional District, which includes Salem.
An initial vote tally Tuesday night had Marion County prosecutor Amy Queen ahead of Circuit Judge Erious Johnson in the race for his seat. Meanwhile, the incumbent Marion County Commissioners Kevin Cameron and Colm Willis were leading their challengers.
Preliminary results also show local voters supporting bans on psilocybin facilities in unincorporated areas of Marion and Polk counties.