Proposition 39: Prohibits Citizens from Voting Unless They Present Government-Issued Identification. Initiative Constitutional Amendment.
Statewide — all of California
General election · Tuesday, November 3, 2026
- Placed on the ballot by petition signatures (citizen initiative), per the Official Voter Information Guide.[4]
The question on the ballot
PROHIBITS CITIZENS FROM VOTING UNLESS THEY PRESENT GOVERNMENT-ISSUED IDENTIFICATION. INITIATIVE CONSTITUTIONAL AMENDMENT. 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.[1]
Requires state and local elections officials to make "best efforts" using government data to verify that registered voters are U.S. citizens and to report annually the share of each county's voters verified. Voters must select a government-issued ID in their registration to vote by mail; in-person voters must present government-issued ID; mail voters must write the last four digits of the selected ID on the ballot envelope, to be matched to registration. The state would issue a free voter ID card on request, the State Auditor would report every odd-numbered year on compliance, and the Legislature would need to pass laws defining details such as acceptable IDs. Fiscal impact per the Legislative Analyst: state and local costs of tens of millions to low hundreds of millions of dollars each year, depending on future decisions, with possible smaller savings from fewer registered voters.[1][2]
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.
The law today
U.S. citizenship is required to vote in state and federal elections. Voters register with the county where they live, and identity is established at registration with a driver's license number, state ID number or last four digits of the Social Security number; voters who do not provide it may be asked for identification the first time they vote. All registered voters receive a vote-by-mail ballot. In person, voters typically identify themselves by signing the voter list; by mail, by signing the ballot envelope, and elections officials verify signatures on mail ballots before counting them. Elections officials keep voter rolls current by removing people who are ineligible, such as those who have died or are in prison.[2]
Official fiscal estimate
Legislative Analyst: increased state and local costs of tens of millions of dollars to low hundreds of millions of dollars each year (less than 0.25 percent of the General Fund budget), depending on future decisions of the Legislature, state departments, local governments and voters. There could be some savings from fewer registered voters, which likely would not exceed the costs.[2]
Arguments made for
- Official argument in favor, signed by Margit Whitlock, Tafa Jefferson and Joe Green (Democratic, Republican and Independent Coalition Chairs, Californians for Voter ID): "Prop. 39 keeps mail ballots, extended polling hours and all other conveniences in place for voting accessibility," and "even guarantees every voter a FREE Voter ID if they want one."[3]
- Same argument: "In the last election, more than 100,000 ballots were rejected due to signature mismatches—and more than 200,000 voters endured hassles just to get their vote to count."[3]
Arguments made against
- Official argument against, signed by David Trujillo (ACLU California Action), Darius Kemp (Common Cause) and Lorrel Plimier (League of Women Voters of California): "voters would have to include a personal ID number on their ballot envelope that has to exactly match state records. Get one digit wrong, and a valid ballot could get thrown out."[3]
- Same argument: "'Free' state IDs aren't free: voters still pay for transportation, time off work, and costs like childcare or getting required documents," and "Prop. 39 will make every vote by mail voter include their personal details on their return envelope—making voters easy targets for identity theft."[3]
On record in support
- Californians for Voter ID, Yes on 39 (the registered ballot measure committee); signers Margit Whitlock, Tafa Jefferson and Joe Green are its Democratic, Republican and Independent coalition chairs.[5][3]
- Howard Jarvis Taxpayers Association, the Transparency Foundation, Latino American Political Association and California Women’s Leadership Association (named as supporters in the official arguments in favor).[3]
- California Republican Party and Reform California (listed in CalMatters' voter guide).[6]
On record in opposition
- ACLU California Action, Common Cause and League of Women Voters of California (signers of the official argument against).[3]
- U.S. Sen. Alex Padilla, California Nurses Association and California School Employees Association (signers of the rebuttal to the argument in favor).[3]
- California Democratic Party (listed in CalMatters' voter guide).[6]
- Registered No on Prop 39 committees include No on 39 - Block Election Rigging (sponsored by nurses, teachers, and nonprofit labor and community health clinic organizations), United Against Prop. 39 (sponsored by nonprofit labor and civil rights organizations) and No on Prop 39 - Californians for Voting Rights (sponsored by California Donor Table and ACLU of Northern California).[5]
Campaign money
Support: $15,785,413 reported by Californians for Voter ID, Yes on 39. Opposition: $29,637,418 reported by six committees (No on 39 - Block Election Rigging, $16,396,114; United Against Prop. 39, $7,770,661; No on Prop 39 - Californians for Voting Rights, $4,088,885; Communities for an Affordable California, $1,090,000; Working Families for a Better Central Coast, $291,759; No on Prop 39 - Voteriders Committee, $0); two of these also support Proposition 3. Source: Cal-Access totals as compiled by the Secretary of State from specified reports, through 10/06/2026.[5]
Research notes & limits
All text from the Official Voter Information Guide. Arguments (and the rebuttals, which make partisan characterizations of the other side that are not reproduced here) are the authors' opinions and not checked by any agency. Signature counts not stated in the pages reviewed.
Sources · 6
Researched 2026-10-19. Green citations are official government records.
- 1.Proposition 39: Official Title and Summary · California Secretary of State, Official Voter Information Guide (Nov. 3, 2026) · 2026-10-05 Official record
- 2.Proposition 39: Analysis by the Legislative Analyst · California Legislative Analyst's Office, via Official Voter Information Guide · 2026-10-05 Official record
- 3.Proposition 39: Arguments and Rebuttals · California Secretary of State, Official Voter Information Guide · 2026-10-05 Official record
- 4.Proposition 39: Summary and What Your Vote Means · California Secretary of State, Official Voter Information Guide · 2026-10-05 Official record
- 5.2026 Ballot Measure Contribution Totals: Proposition 39 (through 10/06/2026) · California Secretary of State · 2026-10-19 Official record
- 6.CalMatters 2026 Voter Guide: Proposition 39 (endorsements) · CalMatters · 2026-10-19 News report