Oregon has a long history of encoding racism into law, from the Black Exclusion laws from its early history to sundown laws that lasted into the 20th century.

Idaho, too -- the Aryan Nations had their headquarters in the Hayden Lake area for a long time, until the early 2000s if I remember.

It's only in the big cities that you get a lot of a liberal/progressive presence, outside that you get anywhere from libertarians to evangelicals to the outright racists/alt-right types.