The Washington State Senate odd-district primaries on August 4, 2026, will determine which candidates advance to the general election for state senate seats in odd-numbered districts. These primaries use a top-two system, where the two highest vote-getters regardless of party advance to the November general election.
The Washington State Senate odd-district primaries on August 4, 2026, will determine which candidates advance to the general election for state senate seats in odd-numbered districts. These primaries use a top-two system, where the two highest vote-getters regardless of party advance to the November general election.
To vote in Washington's August 4, 2026 primary, voters must be registered by May 11, 2026. Ballots are mailed to all registered voters starting July 18, 2026, and can be returned by mail, drop box, or in-person voting centers through August 4, 2026. No photo ID is required to vote, but signature verification is used for mail ballots.