[5] However, Trump won a considerable majority in outlying communities, garnering over 70% of the vote in rural counties such as Columbia.

Eastern Washington is very rural and leans Republican, partly due to the strong tinge of social conservatism it shares with neighboring Idaho, a GOP stronghold.

That said, Biden was able to improve on Clinton's margin in Whitman County—anchored by the college town of Pullman—increasing it from 4.1% in 2016 to 10.2% in 2020, the best performance for a Democrat in the county since 1936.

[6] Per exit polls by the Associated Press, Biden's strength in Washington came from winning 57% of white voters, 71% among Latinos and 77% among Asian-Americans.

[15][16][17] Additionally, Seattle-based billionaire Howard Schultz announced a potential bid as an independent in early 2019, but backed out in September of that year.

[18] The party's candidates included on the ballot at the deadline were Michael Bennet, Joe Biden, Michael Bloomberg, Cory Booker, Pete Buttigieg, John Delaney, Tulsi Gabbard, Amy Klobuchar, Deval Patrick, Bernie Sanders, Tom Steyer, Elizabeth Warren and Andrew Yang.

The Green Party of Washington facilitated its primary by a mail-in ballot to its members after its Spring Convention on May 23[22] (deadline was June 13).