I go back-and-forth on the idea of voting or not, but I reject any claim that if I vote for a third party, it is a vote for [other candidate]. That’s just not based in reality. It annoys me that it’s still a common argument people make.
If I vote, it will be for someone I can support and mostly because it’s fun to fill out a ballot. :] Then Washington state will go Democrat as it has since 1988, regardless of my vote.