Polls have closed in California and Washington, along with the remaining portions of Oregon and Idaho.Key races to watch:California House races: Five Republican-held districts targeted by Democrats through redistricting, along with other competitive seats.Washington’s 3rd District: Rep. Marie Gluesenkamp Perez (D) is defending her seat.Oregon Governor: Tina Kotek (D) vs. Christine Drazan (R).California Governor: Xavier Becerra (D) vs. Steve Hilton (R).What to watch: House results from Southern California and the Central Valley, and Oregon’s competitive gubernatorial contest.California’s mail-ballot counting means the final House picture may remain incomplete for days.