California Proposition 39: Voter identification and citizenship verification
California · Constitutional amendment · Elections · Statewide decision
Explanation reviewed 2026-10-27. AI-written and checked against linked official evidence; not an election-office summary.
AI-written summary
Would require government-issued ID in person and the last four digits of a designated government ID number on mail-ballot envelopes. It also requires free voter-ID cards, citizenship-verification efforts and reports, and regular compliance audits. Legislative action would supply implementation details.
What applies now
Most in-person voters sign the voter list; mail ballots are signature-verified. Citizenship is already required in state and federal elections.
If yes / for
Adopt the additional identification and verification requirements.
If no / against
Retain existing identification and verification rules.
Costs and funding
Estimated state and local costs range from tens of millions to low hundreds of millions of dollars each year, depending on implementation.
Timing
Implementation date not independently established in this baseline.
Passage rule
A majority of votes cast on the proposition.
Some official sources do not have comparable automated archives. Consult the linked evidence and its review date.