The deadline for Washington voters who want to vote in the November 6th general election is October 8th. Washington, like many other states, allows online voter registration. Washington voting is by mail-in ballot, and all states have absentee balloting options.
The UW Library System has a voter registration and information page here:
Other nonpartisan sites with helpful information and resources are
(a nonpartisan web site was created by state election officials to help eligible voters figure out how and where to go vote, with registration and information for the 50 states)
(United States Election Assistance Commission’s website, featuring mail-in voter registration forms in several languages)
(League of Women Voters website)
(Long Distance Voter provides assistance with obtaining absentee ballots)
(National Association of Secretaries of State)