To get an initiative on the California ballot, you draft the full text of your proposed law, file it with the state Attorney General with a $2,000 deposit, and then collect signatures from registered voters equal to 5% of the last gubernatorial vote for a statutory measure or 8% for a constitutional amendment. You have 180 days to gather those signatures once the Attorney General issues the official title and summary, and county officials must verify enough of them at least 131 days before the election you’re targeting. The process is open to any Californian, but in practice it takes millions of dollars, a professional signature operation, and careful drafting to avoid legal problems that can sink a measure before voters ever see it.
Decide What Kind of Measure You’re Proposing
Two paths lead to the ballot through the initiative power, and the choice shapes everything after it.
A statutory initiative creates, changes, or repeals a law inside the California Codes. It needs signatures equal to 5% of the votes cast for governor in the last gubernatorial election, and it passes by simple majority.1Justia. California Constitution Article II Section 8 – Voting, Initiative and Referendum, and Recall Once enacted, it carries the same force as any bill the legislature passes.
A constitutional amendment changes the California Constitution itself. The signature bar is higher, 8% of the last gubernatorial vote, though the vote threshold at the ballot box is still a simple majority.1Justia. California Constitution Article II Section 8 – Voting, Initiative and Referendum, and Recall Based on the 2022 gubernatorial turnout, the current thresholds are 546,651 valid signatures for a statutory measure and 874,641 for a constitutional amendment. Both numbers reset after the 2026 gubernatorial election.2California Secretary of State. Statewide Initiative Guide
A separate tool, the referendum, lets voters reject a law the legislature already passed, with a 90-day window from the governor’s signature to file petitions.3California Legislative Information. California Elections Code 9014 If your goal is to propose your own law rather than undo an existing one, the initiative path is the one you want.
Draft It to Survive Two Constitutional Traps
Two rules in the state constitution kill more initiatives than proponents expect. Both should be settled before drafting is finished.
The Single-Subject Rule
An initiative can address only one subject. Article II, Section 8(d) says a multi-subject measure cannot be placed on the ballot and has no legal effect even if it somehow reaches voters.1Justia. California Constitution Article II Section 8 – Voting, Initiative and Referendum, and Recall Bundling unrelated policy changes into one proposition is a reliable way to get it thrown out. Keep the measure focused on one coherent purpose.
Amendment Versus Revision
The initiative power lets voters amend the constitution but not revise it. A revision is a sweeping overhaul of the state’s governmental framework, and only the legislature can put one before voters. The California Supreme Court applies both a quantitative test (how many provisions change) and a qualitative test (whether the change fundamentally restructures government power). Any initiative that shifts core authority between branches or rewrites the basic plan of governance risks being struck down as an impermissible revision.
File With the Attorney General
You submit the full text of your proposal to the California Attorney General’s office along with a $2,000 filing fee. The fee is refunded if the measure qualifies for the ballot within two years, and forfeited to the General Fund if it doesn’t.4California Legislative Information. California Elections Code 9004
Filing triggers a 30-day public review period. Anyone can submit comments on the proposed measure through the Attorney General’s website during this window.5State of California – Department of Justice – Office of the Attorney General. Initiatives – Active Measures The Department of Finance and the Legislative Analyst’s Office jointly prepare a fiscal impact estimate projecting effects on state and local budgets.
After public comment closes and the fiscal estimate is complete, the Attorney General has 15 days to write the official circulating title and summary, capped at 100 words.4California Legislative Information. California Elections Code 9004 The date it reaches you is the “official summary date,” and it starts the clock on signature gathering. Every petition page has to display this title and summary so voters know what they’re signing.
Collect the Signatures
You have 180 days from the official summary date to circulate petitions, collect signatures, and file completed petitions with county elections officials. Counties will not accept petitions filed after the deadline.3California Legislative Information. California Elections Code 9014 Petition pages also must carry disclosure statements identifying the primary financial backers of the measure.
Only signatures from registered California voters count.6California Legislative Information. California Elections Code 9035 A meaningful percentage of raw signatures always fail verification for reasons like unregistered signers, duplicates, and mismatched addresses, so serious campaigns collect well above the legal minimum. Gathering half a million or more valid signatures inside six months almost always means hiring professional signature-gathering firms, and most successful campaigns budget in the millions for this phase alone.
Get Through Verification and Qualify
After the circulation window closes, proponents file petitions with the elections official in each county where signatures were collected. All petition sections from a given county must be filed together.7California Legislative Information. California Elections Code 9030
Counties then have eight business days to count the raw number of signatures and report totals to the Secretary of State. If the statewide raw count falls below 100% of the required number, the effort ends. If it meets or exceeds 100%, the Secretary of State orders verification by random sampling.7California Legislative Information. California Elections Code 9030
Three outcomes are possible from the sample:
- If projected valid signatures exceed 110% of the requirement, the measure qualifies immediately.
- If the projection lands between 95% and 110%, the Secretary of State orders a full signature-by-signature verification across every county.
- If it falls below 95%, the petition fails.
An initiative can appear only on a general election or a special statewide election, and qualification has to be complete at least 131 days before that election. On the 131st day before the election, the Secretary of State issues the certificate of qualification and assigns the measure a proposition number.8Orange County Registrar of Voters. California Elections Code 9033
Withdrawing a Qualified Initiative
Qualifying for the ballot doesn’t mean you have to stay there. Proponents sometimes use a qualified measure as leverage to negotiate legislation and then pull the initiative once a deal is reached.
You can withdraw at any time before the petition is filed with elections officials. After filing, you can still withdraw by submitting written notice to the Secretary of State, up until 5:00 p.m. on the day the Secretary of State certifies the measure has qualified for the ballot. After that, it goes to voters.9California Legislative Information. California Elections Code 9604 Accepting payment in exchange for withdrawing an initiative is a crime.
What Happens If It Passes
A measure approved by a simple majority takes effect on the fifth day after the Secretary of State files the official statement of vote, unless the measure itself sets a later date.10Justia. California Constitution Article II Section 10 – Voting, Initiative and Referendum, and Recall Some initiatives include delayed dates so agencies can write regulations, but the default is near-immediate.
Voter-approved initiatives are hard for the legislature to change. The California Constitution bars the legislature from amending or repealing an initiative statute unless the measure’s own text explicitly permits it. Without that permission, any modification has to go back to voters at a future election.10Justia. California Constitution Article II Section 10 – Voting, Initiative and Referendum, and Recall That protection is unusually strong compared to other states, which is why many campaigns include an amendment clause requiring a supermajority legislative vote, so the resulting law isn’t permanently frozen.
When two initiatives on the same ballot conflict, the one with more “yes” votes controls wherever their provisions clash.10Justia. California Constitution Article II Section 10 – Voting, Initiative and Referendum, and Recall Interest groups sometimes place a rival measure alongside an initiative they oppose for exactly this reason.
Legal Challenges You May Still Face
Reaching the ballot, or even winning at the polls, doesn’t end the fight. Courts hear challenges at both stages.
Before an election, California courts are reluctant to remove initiatives from the ballot. Opponents have to show convincingly that the measure is invalid and that holding the vote would cause significant harm. Courts have occasionally intervened citing wasted election costs, federal preemption, or judicial economy, but the historical success rate is low. The default preference is to let voters decide first.
After passage, the door opens wider. The single-subject rule and the amendment-versus-revision line are the two most common grounds for invalidation under state law. Federal grounds also come into play: courts have struck down initiatives that violate the Equal Protection Clause, the First Amendment, or the Supremacy Clause when they conflict with federal law. A well-drafted measure anticipates these attacks; a rushed one hands opponents the tools to undo the vote in court.