Washington Revised Code Title 29A. Elections § 29A.08.140. Voter registration deadlines

(a) Submit a registration application that is received by an election official no later than eight days before the day of the primary, special election, or general election. For purposes of this subsection (1)(a), “received” means: (i) Being physically received by an election official by the close of business of the required deadline; or (ii) for applications received online or electronically, by midnight, of the required deadline; or

(b) Register in person at a county auditor's office, the division of elections if in a separate location from the county auditor's office, a voting center, a student engagement hub, or other location designated by the county auditor no later than 8:00 p.m. on the day of the primary, special election if the county is conducting an election, or general election.

(2)(a) In order to change a residence address for voting in any primary, special election, or general election, a person who is already registered to vote in Washington may update his or her registration by:

(b) A registered voter who fails to update his or her residential address by this deadline may vote according to his or her previous registration address.