Highest acceptance rate

King County Elections works diligently to educate voters about the importance of keeping signatures up-to-date. Fewer signature challenges (errors) means obtaining a final count in an election sooner while also lowering operating costs. In 2015 over 11,000 signature update letters were mailed to voters in order to receive a more current version of their signature. As a result, future elections are likely to produce a higher acceptance rate with even fewer signature challenges.

See detailed signature challenges table, including special elections.