WA State is a prime candidate for state that produces the worst senators and governors. Of course, there is much competition for that designation. They should rename the state; it’s an embarrassment to the memory of George Washington.
The eastern part is a desert, conservative, Republican and has a large Mormon contingent.
The western part is a rain forest, liberal, Democratic and largely atheist.
The western part contains only one third of the land but two thirds of the people, which is why it determines the outcome of statewide elections.
If you held a referendum in western Washington about that portion of the state leaving the US to be annexed into the Canadian province of British Columbia, I would estimate that it would win with roughly 60% of the vote.