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1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsGetting a citizen initiative onto the ballot and getting voters to approve it are two different tests. States set their own rules for both, and the signature hurdle can also change with the measure type, election cycle, and where petition signers live. There is no single national signature formula or passage threshold.
Ballot access and voter approval are separate hurdles
A citizen initiative lets voters propose a law or constitutional amendment under state rules. A popular referendum is a different process: voters may seek a vote on a law already passed by a legislature. The rules for one process should not be assumed to apply to the other, and states do not all offer the same citizen-led processes.
For an initiative, petition signatures are generally a qualification requirement: officials determine whether a proposal meets the rules to appear on the ballot. Voters then decide whether to approve it. Meeting the signature requirement does not enact the proposal, and a high signature total does not substitute for the vote threshold.
This comparison covers citizen initiatives and popular referenda, not every measure referred to voters by a legislature. The examples below illustrate how rules differ; they are not a complete 50-state table.
What to compare in a state’s rules
- Process and measure type: Check whether the proposal is a citizen-initiated statute, a constitutional amendment, or a popular referendum. A state may use different rules for each.
- Signature formula and baseline: A requirement may be a fixed number or a percentage of a past election’s votes or another baseline. A percentage-based count can change from cycle to cycle.
- Geographic distribution: A statewide total may not be enough if signatures must also come from a specified number or share of districts or other areas.
- Verification: Find out who checks signatures and how invalid or duplicate signatures, sampling, and close results are handled. Submitted signatures are not necessarily valid signatures.
- Passage rule: Check the approval threshold and any other adoption condition for the specific type of measure. A majority is common, but not universal.
- Timing and legal status: Filing windows and ballot deadlines matter. Also distinguish rules currently in effect from proposed changes or measures whose status is unresolved.
How signature formulas differ: state examples
The examples below show why a count needs its state, measure type, baseline, and election cycle attached. Where the cited guidance does not establish an approval rule or a detail for a particular measure, the table does not infer one.
| State and measure | Signature requirement | Geographic or verification detail | Approval threshold established here |
|---|---|---|---|
| California initiative statute | For the 2026 cycle, 546,651 signatures. The California Secretary of State’s guide gives the underlying formula as 5% of votes cast for governor at the preceding gubernatorial election. | The Secretary of State describes county random sampling and a full check in a specified range; details follow below. | Not stated in the cited California guidance summarized here. |
| California initiated constitutional amendment | For the 2026 cycle, 874,641 signatures. The underlying formula is 8% of votes cast for governor at the preceding gubernatorial election. | The same California verification process described below applies to the cited guidance. | Not stated in the cited California guidance summarized here. |
| Florida citizen-initiated constitutional amendment | Valid signatures equal to 8% of votes cast in the preceding presidential election. | The 8% requirement applies statewide and in each of one half of the state’s congressional districts. | 60% voter approval. |
| Oregon constitutional initiative | Valid signatures equal to 8% of votes cast for governor at the last election. | The Oregon Elections Division says verification must show the required number of signatures. | Not stated in the cited Oregon guidance summarized here. |
| Oregon statutory initiative | Valid signatures equal to 6% of votes cast for governor at the last election. | The Oregon Elections Division says verification must show the required number of signatures. | Not stated in the cited Oregon guidance summarized here. |
| Utah petition types listed in the state’s 2026 document | 8% statewide. | The document also gives a distribution requirement in at least 26 of 29 state senate districts. Confirm the specific petition type in the current official document before applying these figures to a particular measure. | Not stated in the cited Utah document summarized here. |
| Ohio initiated statute example | The Ohio Attorney General gives 6% of votes cast for governor in the previous election as an example. | Ohio’s requirements vary by petition type and election baseline; the applicable row must be checked. Certain requirements fluctuate after gubernatorial elections. | Not stated in the cited Ohio guidance summarized here. |
California’s 2026 counts are cycle-specific, not permanent totals. For a percentage-based requirement, the applicable election baseline is part of the rule; quoting a raw number without its cycle can mislead readers about what petitioners need in another year.
Why submitted signatures may not qualify
California’s Secretary of State describes a verification process in which counties first randomly sample signatures once the raw submission reaches the required total. If the sample indicates valid signatures equal to 95%–110% of the requirement, officials conduct a full check. If the estimated valid count is below 95%, the measure fails under the described process; above 110%, it qualifies under the stated conditions.
Those percentages describe California’s method, not a national standard. Other states’ verification procedures should be checked with their own election authorities. The practical distinction is between signatures collected or submitted and signatures that officials determine count toward the legal requirement.
How many votes does a measure need to pass?
NCSL describes majority approval as the general passage rule for ballot initiatives, while noting that some states impose a higher threshold. Florida is a clear example: a citizen-initiated constitutional amendment needs 60% voter approval. That is an adoption threshold, separate from Florida’s statewide and district-based signature requirements.
Colorado is commonly described in reporting as requiring 55% approval for most measures, but passage rules can be measure-specific and legal changes may be proposed. Do not treat a reported proposal in Colorado or another state as effective law without checking its current status with the relevant election authority or statute. The same caution applies to proposals discussed for North Dakota, South Dakota, and Utah in reporting on the 2025 and 2026 election cycles.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to check a rule before using it
- Identify the process and measure: Determine whether it is a citizen initiative, a popular referendum, a statutory measure, or a constitutional amendment.
- Read the current state election authority guidance or statute: Confirm the signature formula, its baseline election, any filing window, and the deadline for the intended ballot cycle.
- Check all distribution requirements: Verify whether the statewide count must be accompanied by minimums in districts, counties, or other geographic units.
- Read the verification and approval rules separately: Confirm what signatures count after review and what vote threshold or other condition governs passage.
- Confirm legal status and date: If a threshold change has been proposed, check whether it passed, took effect, was enjoined, or remains pending before describing it as current law.
NCSL’s comparative overview is useful for understanding the general landscape, but the cited materials here do not establish a fully verified, current 50-state table. For a specific petition or election, the state’s current official guidance is the controlling place to confirm the applicable rule.
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