The Oregon House and Senate are currently under Democratic control, but are competitive this year. While the Democratic Party is seen as possessing the advantage, the chambers are in contention it's going to be a race to watch.
The state has operated under a Democratic trifecta for the past 9 years.
Polls close in the state at 8 p.m. local time. Given the state has multiple timezones, the first polls close at 10 p.m. EST and the last polls close at 11 p.m. EST.