WA still or used to have residual Asian-American voters that tend to vote republican. Those voters have largely abandoned the Republican party, I suspect further erosion with growing anti-Asian racism fueled by Trump's rhetoric. A similar pattern could be seen in Orange County, CA Vietnamese precincts as Vietnamese-American voters swing further to the Democrats.
If the Republican Party stops being so overtly racist, they could possibly make some inroads with POC. But then they'd alienate a lot of their white voters...
