See this report from Oregon Public Broadcasting:
The Working Families Party, which focuses almost exclusively on pocketbook issues, has primarily been an east coast phenomenon.But now some of the most influential labor leaders in Oregon have banded together to create a branch of the party here.
I was going to make sarcastic comments about them joining all the others, but then did a minimum of research. This Oregon Secretary of State page only lists these as statewide parties: Democratics, Republicans, Constitution, Libertarian, and Pacific Greens. I was under the impression that at least the Freedom Socialists and Socialist Party also were Statewide.