California Proposition 39 — Prohibits Citizens from Voting Unless They Present Government-Issued Identification

Ballot measure · November 3, 2026

What it does
Prohibits voting by mail unless voter designates a government-issued identification number for their voter registration. Invalidates mail ballots if envelope does not include last four digits of a government-issued identification number matching the number designated in the voter’s registration (e.g., if voter designates Social Security number for registration, but provides driver’s license number on envelope, their ballot would not count). Prohibits voting in person without presenting government-issued identification. Requires elections officials to annually report percentage of each county’s voters whose citizenship status they have verified. Summary of Legislative Analyst's estimate of net state and local government fiscal impact: State and local government costs of between tens of millions of dollars and low hundreds of millions of dollars each year to implement new voting requirements. Costs depend on future decisions by the Legislature, state departments, local governments, and voters.
A YES vote means
Voters would be required to present additional identifying information to elections officials each time they vote.
A NO vote means
A voter’s identity would continue to be established with the voter’s signature.
Needed to pass
A simple majority
Put on the ballot by
citizen initiative

Official text: source

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