Citizens Changing State Law: A State Guide to Ballot Initiatives and Referendums

By Oni Harton, Esq., John Devendorf, Esq. | Reviewed by Canaan Suitt, J.D. | Last updated on May 11, 2026

Ballot initiatives and referendums are tools of direct democracy that allow citizens to propose or approve laws and constitutional amendments. However, not all states provide these legal mechanisms. In the states that do have these tools, the rules differ.

In some cases, citizens can do this all without a single vote from a legislator. As an informed citizen, it is critical to understand these processes to fully participate. For legal help on starting a ballot initiative, find a local attorney with experience in state constitutional and legal issues.

What Are Ballot Initiatives and Referendums?

A ballot initiative is a citizen-driven proposal to enact new laws or constitutional amendments, giving citizens a direct role in shaping state policy. There are direct and indirect ballot initiatives:

  • Direct ballot initiatives allow citizens to bypass the legislature entirely. Citizens draft a proposed statute or constitutional amendment, collect the required number of signatures, and place it directly on the ballot. This process ensures that voters have the final say without interference from elected officials.
  • Indirect ballot initiatives allow lawmakers to review the proposed initiative before it goes to voters. If lawmakers approve it, the initiative bypasses the governor and then becomes law. If the lawmakers do not approve it, the initiative appears on the ballot for a popular vote, where citizens decide on the proposal. This indirect initiative process balances citizen input with legislative oversight.

Referendums empower citizens to approve or reject laws passed by the state legislature. Voters can challenge laws by collecting signatures to place the issue on the ballot. If citizens collect enough signatures, the public can decide whether to uphold or repeal the law.

The outcome of a referendum is determined by a popular vote, with laws either upheld or repealed based on the majority’s decision. Typically, laws subject to a referendum are suspended until the vote. While veto referendums are rare, they often result in voters opposing the legislature.

Note that Maryland and New Mexico are the only states that offer a veto referendum as their only form of citizen access to the statewide ballot. Residents of these states can repeal legislative acts but cannot propose new laws or constitutional amendments.

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States with Citizen-Led Ballot Initiatives or Referendums

Twenty-six states and the District of Columbia have a referendum process, an initiative process, or both. Although the Mississippi Constitution allows for ballot initiatives, the state’s Supreme Court effectively voided the ballot provision by finding it incompatible with other provisions of law.

The exact number of signatures varies by state and is based on either:

  • The population
  • The number of registered voters in the state
  • Geographic signature requirements
  • The percentage of votes cast in the preceding election

The number of signatures ranges from almost a million in California to just over 15,000 signatures in North Dakota.

The table shows the types of ballot initiatives and referendums allowed in various states, along with signature requirements, voting threshold passage, official process links, and constitutional references.

StateType of Initiative or ReferendumSignatures RequiredVotes to PassOfficial LinkStatute
AlaskaInitiative (statute) and referendum10% of votes in last general electionSimple majorityAlaska Initiative ProcessAK Const. Art. XI
ArizonaInitiative (statute & amendment) and referendum15% (amendment), 10% (statute), 5% (referendum)Simple majority (60% for tax increases)Arizona Initiative ProcessAZ Const. Art. IV, Pt. 1
ArkansasInitiative (statute & amendment) and referendum10% (amendment), 8% (statute), 6% (referendum)Simple majorityArkansas Initiative ProcessAR Const. Art. 5, § 1
CaliforniaInitiative (statute & amendment) and referendum8% (amendment), 5% (statute and referendum)Simple majorityCalifornia Initiative ProcessCA Const. Art. II, § 8
ColoradoInitiative (statute & amendment) and referendum5% of votes cast for Secretary of StateSimple majority (55% for amendments)Colorado Initiative ProcessCO Const. Art. V, § 1
FloridaInitiative (amendment)8% of last presidential vote60% supermajorityFlorida Initiative ProcessFL Const. Art. XI, § 3
IdahoInitiative and referendum6% of registered votersSimple majorityIdaho Initiative ProcessID Const. Art. III, § 1
IllinoisInitiative (amendment)8% of last gubernatorial voteSimple majority or 60% voting on questionIllinois Initiative ProcessIL Const. Art. XIV, § 3
MaineInitiative (statute) and referendum10% of last gubernatorial voteSimple majorityMaine Initiative ProcessME Const. Art. IV, Pt. 3
MarylandReferendum only3% of last gubernatorial voteSimple majorityMaryland Initiative ProcessMD Const. Art. XVI
MassachusettsInitiative (statute & amendment) and referendum3% of last gubernatorial voteSimple majority (must exceed 30% of total ballots)Massachusetts Initiative ProcessMA Const. Amend. Art. XLVIII
MichiganInitiative (statute & amendment) and referendum10% (amendment), 8% (statute), 5% (referendum)Simple majorityMichigan Initiative ProcessMI Const. Art. II, § 9
MississippiInactive (amendment)N/AN/AMississippi Initiative ProcessMS Const. Art. 15, § 273
MissouriInitiative (statute & amendment) and referendum8% (amendment), 5% (statute) in 2/3 of districtsSimple majorityMissouri Initiative ProcessMO Const. Art. III, § 49
MontanaInitiative (statute & amendment) and referendum10% (amendment), 5% (statute and referendum)Simple majorityMontana Initiative ProcessMT Const. Art. III, § 4
NebraskaInitiative (statute & amendment) and referendum10% (amendment), 7% (statute), 5% (referendum)Simple majority (minimum 35% of total votes cast)Nebraska Initiative ProcessNE Const. Art. III, § 2
NevadaInitiative (statute & amendment) and referendum10% of total votes cast in last general electionSimple majority (amendments require two votes)Nevada Initiative ProcessNV Const. Art. 19
New MexicoReferendum only10% of last general electionSimple majority (minimum 40% of total votes cast)New Mexico Initiative ProcessNM Const. Art. IV, § 1
North DakotaInitiative (statute & amendment) and referendum4% population (amendment), 2% population (statute and referendum)Simple majorityNorth Dakota Initiative ProcessND Const. Art. III
OhioInitiative (statute & amendment) and referendum10% (amendment), 6% (statute and referendum)Simple majorityOhio Initiative ProcessOH Const. Art. II, § 1
OklahomaInitiative (statute & amendment) and referendum15% (amendment), 8% (statute), 5% (referendum)Simple majorityOklahoma Initiative ProcessOK Const. Art. V
OregonInitiative (statute & amendment) and referendum8% (amendment), 6% (statute), 4% (referendum)Simple majorityOregon Initiative ProcessOR Const. Art. IV, § 1
South DakotaInitiative (statute & amendment) and referendum10% (amendment), 5% (statute and referendum)Simple majoritySouth Dakota Initiative ProcessSD Const. Art. III, § 1
UtahInitiative (statute) and referendum8% of active votersSimple majorityUtah Initiative ProcessUT Const. Art. VI, § 1
WashingtonInitiative (statute) and referendum8% (statute), 4% (referendum)Simple majorityWashington Initiative ProcessWA Const. Art. II, § 1
Washington, D.C.Initiative and referendum5% of registered votersSimple majorityD.C. Initiative ProcessDC Code § 1–204.101
WyomingInitiative (statute) and referendum15% of last general electionSimple majorityWyoming Initiative ProcessWY Const. Art. 3, § 52

States with Limited or No Citizen-Led Processes

Twenty-four states do not provide for any citizen-initiated ballot measures at the statewide level:

  1. Alabama
  2. Connecticut
  3. Delaware
  4. Georgia
  5. Hawaii
  6. Indiana
  7. Iowa
  8. Kentucky
  9. Kansas
  10. Louisiana
  11. Minnesota
  12. New Hampshire
  13. New Jersey
  14. New York
  15. North Carolina
  16. Pennsylvania
  17. Rhode Island
  18. South Carolina
  19. Tennessee
  20. Texas
  21. Vermont
  22. Virginia
  23. West Virginia
  24. Wisconsin

However, in some of these states, municipal and local governments provide for local initiatives.

How To Get a Ballot Initiative on the Ballot

Although ballot measures represent a powerful way for citizens to directly shape the law and drive change, they require meeting strict legal requirements.

Ballot measures have historically required only a simple majority vote (more than 50% of voters), but more states are requiring higher approval thresholds, especially for constitutional amendments.

The process varies widely from state to state, but common requirements include the following:

  1. Drafting the initiative petition
  2. Meeting the threshold of required signatures based on the percentage of votes cast in the most recent presidential or gubernatorial election (commonly ranging from 3% to 15%) and/or geographic requirements
  3. Adhering to timeline requirements for obtaining petition signatures, typically ranging from 90 days to two years
  4. Following single-subject rules, requiring that each measure address one topic
  5. Filing with the appropriate state agency, such as the Attorney General or Secretary of State

    Once the petition is submitted, state officials verify the signatures to ensure they belong to registered state residents. If the requirements are met, the initiative is placed on the ballot for a pubic vote.

    The more recent ballot measure campaigns have become sophisticated operations, costing tens of millions of dollars or more. Citizen groups routinely hire professional service firms to help obtain valid signatures and complete petition forms.

    Citizen Initiatives vs. Propositions by State Legislatures

    Ballot propositions and citizen-driven initiatives are two distinct pathways to shape laws and policies in a state. Both ultimately require voter approval, but their mechanics differ.

    Ballot propositions introduced by state legislatures can include new laws and constitutional amendments. The process is controlled by elected officials and limits direct public involvement. Citizen-driven initiatives, on the other hand, empower voters to take a more active role in the lawmaking process.

    Citizen-driven initiatives reflect the will of the people, but they face challenges such as meeting strict signature requirements and navigating legal challenges. Legislative proposals, while less grassroots-driven, ensure that significant policy changes have public backing.

    Both processes play a critical role in state government, providing distinct, yet complementary pathways for democratic participation and decision-making.

    Common Issues Addressed in Ballot Initiatives

    Ballot initiatives tackle a variety of important issues and voter concerns. Recent ballot measures include:

    • Tax policy. Initiatives such as property tax reform, exemptions, and caps often appear on general election ballots. This reflects efforts to amend the state constitution or adjust tax laws through referenda.
    • Healthcare. Healthcare initiatives include proposals to expand Medicaid and address public health funding, which often require approval through initiative/referendum processes.
    • Redistricting. Measures to allow the state legislature to conduct congressional redistricting, with proposals often requiring approval by electors during a general election.
    • Electoral reform. Measures addressing voter processes and election laws, such as voter ID and citizenship requirements. These measures often include a ballot title to clarify their intent to voters.
    • Substance policy. Initiatives related to drug policy include measures to regulate or legalize substances and penalties for drug-related offenses.
    • Civil rights and liberties. Initiatives focused on protecting or expanding civil rights, such as measures addressing reproductive rights, same-sex marriage bans, and anti-discrimination policies.

    This set of ballot initiatives highlights the diversity of issues that ballot measures can address. Citizens can play a vital role in shaping the future of their states.

    Do you seek to get more involved in shaping state law and policy? Ballot initiatives and referendums offer a way for citizens to do just that. However, these processes come with complex rules and requirements that vary by state.

    Staying informed ensures you’re prepared to engage with these democratic processes. To get assistance to get help with ballot initiatives, referendums, or any issues relating to voting, look for a lawyer in your area using the Super Lawyers directory.

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