If you make a mistake on your ballot, you may get a replacement ballot during an election.

Replacement ballots are a normal part of the Vote by Mail process. Voters may receive additional ballots if they re-register, update their voter registration or request a replacement from our office. Only the first ballot our office receives will be counted, ensuring NO ONE can vote twice.

Tuesday, February 27, is the final day that registered voters may request a replacement Vote by Mail ballot be delivered by mail for the March 5, 2024 Presidential Primary Election. The deadline ensures that there is enough time for postal delivery. To request a replacement ballot after February 27, please go to any Vote Center in San Mateo County.

If you want a representative to pick up a replacement ballot for you, please fill out and sign the Application to Provide Vote-by-Mail Ballot to Representative. The representative must come to the Elections Office or any Vote Center to receive the ballot.

Application to Provide Vote-By-Mail Ballot to Representative - English
Application to Provide Vote-By-Mail Ballot to Representative - Spanish
Application to Provide Vote-By-Mail Ballot to Representative - Chinese
Application to Provide Vote-By-Mail Ballot to Representative - Filipino

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