Direct democracy ballot measures

Voters have decided on direct democracy ballot measures across the U.S. As a state ballot measure topic, direct democracy includes measures regarding direct citizen participation in the lawmaking process, such as the initiative, referendum, and recall. The topic is grouped within the election policy area.

This page provides information on:

• Related ballot measures
• Upcoming ballot measures
• Comprehensive list of ballot measures by year and state

Topic information

• State ballot measure topics
• Local ballot measure topics
• History of ballot measures by topic

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State ballot measure

Election policy

Direct democracy

Related ballot measures

Subtopics of direct democracy ballot measures

The following subtopics provide more detailed lists and information:

Ballot measure supermajority requirements Ballot measure process Initiative and referendum process Recall process

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State ballot measures

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Local ballot measures

Local election policy

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Budget and tax policy

Economic regulations Banking policy Business regulations Insurance policy Public economic investment policy Tax policy Business taxes Carbon taxes and fees Fees, licenses, and charges Food and beverage taxes Fuel taxes Income taxes Property taxes Property tax exemptions Sales taxes Severance taxes Tobacco and cigarette taxes Budget policy Balanced budget requirements Budget stabilization funds Debt limits Revenue allocation Revenue and spending limits Restricted-use funds Bond issues Bond issue requirements Tax and revenue administration

Criminal justice and law enforcement policy

Civil law and trials Civil trials Tort law Criminal sentences and trials Bail policy Criminal sentencing Criminal trials Death penalty Juvenile criminal justice Parole policy Drug regulations Alcohol laws Drug crime policy Marijuana laws Psychedelic substance laws Smoking bans Tobacco laws Law enforcement and corrections Corrections governance Law enforcement funding Law enforcement officers and departments Prison and jail funding Prison work regulations Crime victims' rights Dueling bans

Education policy

Higher education Higher education funding Higher education governance Public K–12 education Public education funding Public education governance Public school teachers and staff Religion in public schools School class size policy Early childhood education School choice policy

Election policy

Direct democracy Ballot measure supermajority requirements Ballot measure process Initiative and referendum process Recall process Electoral systems Cumulative voting Presidential electoral vote Primary election systems Proportional representation Ranked-choice voting Runoff elections Term limits Congressional term limits Executive official term limits Judicial term limits Local official term limits State legislative term limits Voting policy Absentee and mail voting Citizenship voting requirements Early voting Literacy, poll tax, and property voting requirements Primary election participation Race and suffrage Residency voting requirements Voter ID policy Voter registration Voting age policy Voting rights for persons with criminal convictions Women's suffrage Age limits for officials Campaign finance Election administration and governance Redistricting policy

Environment and energy policy

Energy policy Carbon emissions regulations Energy conservation and efficiency Energy market regulations Energy transmission projects Fossil fuel energy Hydroelectric energy Nuclear energy Solar and wind energy Hunting and fishing Fisheries and fishing regulations Game and fish commissions Hunting regulations Right to hunt and fish Natural disaster policy Earthquake infrastructure Flood infrastructure and management Storm infrastructure Wildfire management Agriculture policy Animal treatment laws Food policy Forestry and timber Mineral resources Parks, land, and natural area conservation Pollution, waste, and recycling policy

Governance policy

Administrative agencies Administrative organization Administrative powers and rulemaking Local government Local government organization Local government officials and elections Local government finance and taxes State constitutions Constitutional rights Constitutional wording changes State constitution ratification State constitutional conventions State executives Executive branch structure State executive elections State executive powers and duties State legislatures State legislative authority State legislative elections State legislative processes and sessions State legislative structure State legislative vote requirements State judiciary State judicial authority State judicial selection State judiciary oversight State judiciary structure Census policy Civil service Ethics rules and commissions Federal government issues Jury rules Impeachment rules Open meetings and public information Salaries of government officials State capitals State flags, symbols, and holidays Statehood Time standards

Infrastructure policy

Housing policy Homestead tax exemptions Housing assistance programs Housing development funding Rent control and regulations Transportation policy Airport infrastructure Highways and bridges Non-motorized transportation Ports and harbors Public transportation Railways Toll roads Transportation taxes and fees Vehicle and driver regulations Water infrastructure Drinking water systems Sewage and stormwater Water irrigation policy Water storage Eminent domain policy Land use and development policy Public land policy Telecommunications infrastructure Utility policy

Labor, healthcare, and public assistance policy

Labor union policy Collective bargaining Labor disputes and strikes Labor union deductions Right-to-work laws Healthcare policy Complementary and alternative healthcare Healthcare facility funding Healthcare governance Private health insurance Public health insurance Vaccinations and disease policy Work regulations Child labor regulations Gender-based labor regulations Minimum wage laws Paid sick leave laws Workers' compensation laws Working hours regulations Public assistance programs Public employee retirement funds Public works labor and contracting

Military and veteran policy

Defense-related funding Government continuity policy Military service policy Military-related advisory questions Nuclear weapons policy State National Guard and militia Veterans policy

Social issue policy

Abortion policy Affirmative action American Indian issues Assisted death policy Athletics and sports English language policy Family-related policy Firearms policy Gambling policy Immigration policy LGBTQ issues Race and ethnicity issues Religion-related policy Sex and gender issues Sexual content regulations Sunday regulations

Upcoming ballot measures

See also: 2026 ballot measures and 2027 ballot measures

The following is a list of state ballot measures related to this topic that are certified or potential for this year and future elections:

2026

1. Arizona Limit Local Tax Rate on Groceries to 2% of Base Price and Require Voter Approval to Increase Tax Rate Measure (2026) - On the ballot
2. Arkansas Create a Fundamental Right to Initiative and Referendum Amendment (2026) - Potential
3. Arkansas Initiative and Referendum Process Amendment (2026) - Potential
4. California Allow Voting on Citizen Initiatives at Primary Elections Measure (2026) - Potential
5. California Authorize Citizen-Initiated Constitutional Revisions Amendment (2026) - Potential
6. California Changes to Initiative Process and Requirements Initiative (2026) - Potential
7. California Eliminate State Officer Recall Successor Elections Amendment (2026) - On the ballot
8. California Supermajority Requirement for Initiatives Establishing One-Time Revenue Sources Amendment (2026) - Potential
9. California Two-Thirds Vote Requirement for Special Taxes Initiative (2026) - Potential
10. California Vote Requirements for Initiatives Requiring Supermajority Votes Amendment (2026) - On the ballot
11. Hawaii Simple Majority Vote for Constitutional Amendments Measure (2026) - Potential
12. Idaho HJR 4, Grant Legislature Exclusive Authority and Prohibit Citizen-Initiated Measures on Marijuana, Narcotics, and Psychoactive Substances Amendment (2026) - On the ballot
13. Missouri Amendment 4, Require Congressional District Approval for Initiated Constitutional Amendments, Prohibit Foreign Contributions, and Penalize Petition Fraud Amendment (2026) - On the ballot
14. Missouri Electronic Signatures for Citizen Initiatives Measure (2026) - Potential
15. Missouri Initiative Process, Foreign Campaign Funds, and Prohibition of Certain Activities by Legislators Amendment (2026) - Potential
16. Missouri Require 80% Vote for Legislative Changes to Citizen Initiatives Amendment (2026) - Potential
17. Missouri Require 90% Vote for Legislative Changes to Citizen Initiatives Amendment (2026) - Potential
18. Nebraska Require a Four-Fifths Vote for Legislative Ballot Initiative Changes Amendment (2026) - Potential
19. Nevada Require Initiative Description to Include Appropriation and Expenditure Language Amendment (2026) - Potential
20. North Dakota 60% Vote Requirement for Constitutional Amendments Measure (2026) - On the ballot
21. North Dakota Single-Subject Requirement for Constitutional Amendments Measure (June 2026) - On the ballot
22. South Dakota Constitutional Amendment L, 60% Vote Requirement for Constitutional Amendments Measure (2026) - On the ballot
23. South Dakota Require Three-Fourths Legislative Vote and Voter Approval to Amend Initiated Laws Initiative (2026) - Potential
24. South Dakota Require Voter Approval for Legislative Changes to Initiative and Referendum Process Amendment (2026) - Potential
25. Utah 60% Vote Requirement for Ballot Initiatives to Increase or Expand Taxes Amendment (2026) - On the ballot
26. Utah Publication Requirements for Constitutional Amendments Measure (2026) - On the ballot

List of state ballot measures

Click the tabs to view state ballot measures related to this topic, organized by year or state.

Years

States

2026

1. Arizona Limit Local Tax Rate on Groceries to 2% of Base Price and Require Voter Approval to Increase Tax Rate Measure (2026) - On the ballot
2. Arkansas Create a Fundamental Right to Initiative and Referendum Amendment (2026) - Potential
3. Arkansas Initiative and Referendum Process Amendment (2026) - Potential
4. California Allow Voting on Citizen Initiatives at Primary Elections Measure (2026) - Potential
5. California Authorize Citizen-Initiated Constitutional Revisions Amendment (2026) - Potential
6. California Changes to Initiative Process and Requirements Initiative (2026) - Potential
7. California Eliminate State Officer Recall Successor Elections Amendment (2026) - On the ballot
8. California Supermajority Requirement for Initiatives Establishing One-Time Revenue Sources Amendment (2026) - Potential
9. California Two-Thirds Vote Requirement for Special Taxes Initiative (2026) - Potential
10. California Vote Requirements for Initiatives Requiring Supermajority Votes Amendment (2026) - On the ballot
11. Hawaii Simple Majority Vote for Constitutional Amendments Measure (2026) - Potential
12. Idaho HJR 4, Grant Legislature Exclusive Authority and Prohibit Citizen-Initiated Measures on Marijuana, Narcotics, and Psychoactive Substances Amendment (2026) - On the ballot
13. Missouri Amendment 4, Require Congressional District Approval for Initiated Constitutional Amendments, Prohibit Foreign Contributions, and Penalize Petition Fraud Amendment (2026) - On the ballot
14. Missouri Electronic Signatures for Citizen Initiatives Measure (2026) - Potential
15. Missouri Initiative Process, Foreign Campaign Funds, and Prohibition of Certain Activities by Legislators Amendment (2026) - Potential
16. Missouri Require 80% Vote for Legislative Changes to Citizen Initiatives Amendment (2026) - Potential
17. Missouri Require 90% Vote for Legislative Changes to Citizen Initiatives Amendment (2026) - Potential
18. Nebraska Require a Four-Fifths Vote for Legislative Ballot Initiative Changes Amendment (2026) - Potential
19. Nevada Require Initiative Description to Include Appropriation and Expenditure Language Amendment (2026) - Potential
20. North Dakota 60% Vote Requirement for Constitutional Amendments Measure (2026) - On the ballot
21. North Dakota Single-Subject Requirement for Constitutional Amendments Measure (June 2026) - On the ballot
22. South Dakota Constitutional Amendment L, 60% Vote Requirement for Constitutional Amendments Measure (2026) - On the ballot
23. South Dakota Require Three-Fourths Legislative Vote and Voter Approval to Amend Initiated Laws Initiative (2026) - Potential
24. South Dakota Require Voter Approval for Legislative Changes to Initiative and Referendum Process Amendment (2026) - Potential
25. Utah 60% Vote Requirement for Ballot Initiatives to Increase or Expand Taxes Amendment (2026) - On the ballot
26. Utah Publication Requirements for Constitutional Amendments Measure (2026) - On the ballot

2024

1. Arizona Proposition 134, Signature Distribution Requirement for Initiatives Amendment (2024)
2. Arizona Proposition 136, Legal Challenges to Constitutionality of Initiatives Amendment (2024)
3. Arkansas Issue 2, Countywide Voter Approval for New Casino Licenses and Repeal Casino Licenses in Pope County Initiative (2024)
4. California Proposition 5, Lower Supermajority Requirement to 55% for Local Bond Measures to Fund Housing and Public Infrastructure Amendment (2024)
5. Colorado Amendment K, Initiative and Referendum Filing and Judicial Retention Filing Deadlines Amendment (2024)
6. North Dakota Constitutional Measure 2, Single-Subject Requirement for Initiatives and Require Constitutional Initiatives to be Passed Twice Amendment (2024)

2023

1. Maine Question 1, Voter Approval of Borrowing Above $1 Billion by State Entities and Electric Cooperatives Initiative (2023)
2. Maine Question 5, Change Time Period of Judicial Review of Initiative Petitions Amendment (2023)
3. Maine Question 7, Remove Residency Requirement for Initiative Petition Circulators Amendment (2023)
4. Ohio Issue 1, 60% Vote Requirement to Approve Constitutional Amendments Measure (2023)

2022

1. Arizona Proposition 128, Legislative Changes to Ballot Initiatives with Invalid Provisions Amendment (2022)
2. Arizona Proposition 129, Single-Subject Requirement for Ballot Initiatives Amendment (2022)
3. Arizona Proposition 132, 60% Vote Requirement for Ballot Measures to Approve Taxes Amendment (2022)
4. Arkansas Issue 2, 60% Supermajority Vote Requirement for Constitutional Amendments and Ballot Initiatives Measure (2022)
5. Colorado Proposition GG, Include Income Tax Effects in Initiative Ballot Language Measure (2022)
6. Florida Amendment 2, Abolish the Constitution Revision Commission Measure (2022)
7. Kansas Constitutional Amendment 2, County Sheriff Election and Recall Amendment (2022)
8. South Dakota Constitutional Amendment C, 60% Vote Requirement for Ballot Measures Increasing Taxes or Appropriating $10 Million Measure (June 2022)

2020

1. Arkansas Issue 3, Initiative Process and Legislative Referral Requirements Amendment (2020)
2. Florida Amendment 4, Require Constitutional Amendments to be Passed Twice Initiative (2020)
3. Montana C-46, Initiated Amendment Distribution Requirements Measure (2020)
4. Montana C-47, Initiated Statute and Referendum Distribution Requirements Amendment (2020)
5. North Dakota Constitutional Measure 2, Require Initiated Constitutional Amendments to be Approved by the Legislature or Passed Twice Amendment (2020)

2019

1. Maine Question 2, Allow for Alternative Initiative Signatures for Persons with Disabilities Amendment (2019)

2018

1. California Proposition 6, Voter Approval for Future Gas and Vehicle Taxes and 2017 Tax Repeal Initiative (2018)
2. California Proposition 71, Effective Date of Ballot Measures Amendment (June 2018)
3. Florida Amendment 3, Voter Approval of Casino Gambling Initiative (2018)
4. Georgia Amendment 5, School Sales Tax Referendums Amendment (2018)
5. South Dakota Constitutional Amendment W, State Campaign Finance and Lobbying Laws, Government Accountability Board, and Initiative Process Amendment (2018)
6. South Dakota Constitutional Amendment X, 55% Vote Requirement to Approve Constitutional Amendments Measure (2018)
7. South Dakota Constitutional Amendment Z, Single-Subject Rule for Constitutional Amendments (2018)
8. South Dakota Initiated Measure 24, Ban Out-of-State Contributions to Ballot Question Committees Initiative (2018)

2016

1. California Proposition 50, Legislator Suspension Amendment (June 2016)
2. California Proposition 53, Voter Approval Requirement for Revenue Bonds above $2 Billion (2016)
3. Colorado Amendment 71, 55% Vote Requirement and Signature Distribution Requirement for Constitutional Amendments Measure (2016)

2015

1. Ohio Issue 2, Ballot Initiatives to Create Monopolies Amendment (2015)

2014

1. Arkansas Ballot Measure Signature Requirements Amendment, Issue 2 (2014)
2. North Dakota Initiative Filing Deadline Amendment, Measure 1 (June 2014)
3. North Dakota Referral and Initiative Reform Amendment, Measure 4 (2014)

2013

1. Washington "Protect the Initiative Act", Initiative 517 (2013)

2012

1. Alaska Ballot Measure 1, Increase Maximum Local Residential Property Tax Exemption Initiative (August 2012)
2. Michigan Proposal 5, Two-Thirds Legislative or Voter Approval Requirement for New or Increased Taxes Initiative (2012)
3. Michigan Proposal 6, Require Statewide and Local Voter Approval for State Spending on New International Bridges and Tunnels Initiative (2012)
4. Washington Initiative 1185, Tax Increase Approval Requirement Measure (2012)

2010

1. Alabama Special County Educational Tax Amendment, Amendment 2 (2010)
2. Arizona Proposition 112, Ballot Initiative Filing Deadline Amendment (2010)
3. Florida Amendment 4, Comprehensive Land Use Plan Referenda Initiative (2010)
4. Illinois Governor Recall Amendment (2010)
5. Oklahoma State Question 750, Initiative and Referendum Signature Requirements Amendment (2010)

2009

1. Maine Question 7, Municipal Certification Deadline for Initiatives Amendment (2009)

2008

1. Arizona Proposition 105, Supermajority Requirement for Tax and Spending Initiatives Amendment (2008)
2. Colorado Referendum O, Citizens' Initiative Changes Amendment (2008)
3. Ohio Issue 1, Ballot Initiative Signature Deadline Amendment (2008)
4. Oregon Measure 56, Eliminate Voter Turnout Requirement for Property Tax Elections Amendment (2008)
5. Wyoming Constitutional Amendment B, Initiative Signature Distribution Requirement Measure (2008)

2007

1. Washington HJR 4204, Simple Majority for Excess School Tax Levies Amendment (2007)
2. Washington Initiative 960, Supermajority Approval for Tax Increases Measure (2007)

2006

1. Colorado Amendment 38, Citizens' Initiative and Referendum Process Initiative (2006)
2. Colorado Referendum F, Recalls of Elected Officials Amendment (2006)
3. Florida Amendment 3, 60% Majority Requirement for Constitutional Amendments Amendment (2006)
4. Maine Question 1, Limit Annual Increase in Government Spending and Require Voter Approval for Tax Increases Initiative (2006)
5. Maine Question 2, Change Deadline for Submission of Signatures for Statewide Initiatives Measures (2006)

2004

1. Alaska Measure 1, Change Signature Distribution Requirement for Initiatives Amendment (2004)
2. Arizona Proposition 101, Require Ballot Initiatives Proposing Spending to Include Provisions on Revenue Generation Amendment (2004)
3. Arizona Proposition 104, Extending Initiative Petition Circulation Period and Changing Filing Deadline Amendment (2004)
4. California Proposition 65, Local Government Revenue Reduction Voter Approval Requirement Initiative (2004)
5. Florida Amendment 2, Requirements for Citizens' Initiatives Amendment (2004)
6. Maine Question 1, Impose Maximum Limit on Property Taxes and Require Voter Approval to Raise the Limit Initiative (2004)
7. Michigan Proposal 04-1, Voter Approval of Gambling Initiative (2004)
8. Nebraska Initiative Measure 417, Authorize Gambling Laws by Initiative Amendment (2004)
9. Nebraska Initiative Measure 418, Legislative Supermajority to Modify Initiatives Amendment (2004)
10. North Dakota Initiative Measure Fiscal Impact Referendum, Constitutional Measure 2 (2004)

2002

1. Florida Amendment 2, Economic Impact Statements for Initiatives Amendment (2002)
2. Montana Distribution Requirements for Constitutional Initiatives, C-37 (2002)
3. Montana Distribution Requirements for Statutory Initiatives, C-38 (2002)
4. Oklahoma State Question 698, Initiative Signature Requirements Amendment (2002)
5. Oregon Measure 26, Prohibit Payment Based On Per Signature Gathered Initiative (2002)
6. Wyoming Presentation of Constitution, Constitutional Amendment D (2002)

2000

1. Alaska Measure 1, Prohibit Ballot Initiatives on Hunting Amendment (2000)
2. Alaska Measure 2, Single-Subject Rule for Constitutional Amendments Measure (2000)
3. Arizona Proposition 102, Two-Thirds Vote Requirement for Hunting-Related Initiatives Amendment (2000)
4. California Proposition 26, Simple Majority Vote for Local School Bonds and Charter School Facilities Initiative (March 2000)
5. California Proposition 39, Decrease Supermajority from Two-Thirds to 55% for School Bonds Amendment (2000)
6. Nebraska Amendment 3A, Require Constitutional Amendments to Pass Twice Measure (2000)
7. Nebraska Amendment 3B, Initiative and Referendum Definition Measure (2000)
8. Nebraska Amendment 3C, Changes to Initiative Filing Requirements Measure (2000)
9. Oregon Measure 78, Lengthened Period for Verifying Petition Signatures Amendment (May 2000)
10. Oregon Measure 79, Increase Signature Requirement for Citizen-Initiated Constitutional Amendments Measure (May 2000)
11. Oregon Measure 93, Voter Approval of Taxes by Certain Approval Percentage Initiative (2000)
12. Oregon Measure 96, Prohibit Legislature from Making Initiative Process Harder Initiative (2000)
13. South Dakota Amendment B, Authorize Citizen Initiatives for Local Government Consolidation Measure (2000)

1999

1. Maine Question 8, People's Veto Election Timing Amendment (1999)

1998

1. Arizona Proposition 104, Limits on Legislative Alteration of Voter-Approved Initiatives and Referendums Amendment (1998)
2. Arizona Proposition 105, Prohibit Legislative Alteration of Ballot Initiatives Amendment (1998)
3. California Proposition 219, Uniform Application of Ballot Measures Amendment (June 1998)
4. Mississippi Resident Only Initiative Petition Circulation, Amendment 1 (1998)
5. Missouri Amendment 1, Change Signature Deadline for Ballot Initiatives Measure (1998)
6. Missouri Amendment 2, Voter Approval Requirements for School Property Taxes Measure (1998)
7. Nebraska Amendment 5A, Single Subject Requirement for Initiatives Measure (May 1998)
8. Nebraska Amendment 5B, Single Subject Requirement for Veto Referendums Measure (May 1998)
9. Nevada Question 1, Conflicting Voter-Approved Laws Resolution Amendment (1998)
10. Oregon Measure 53, Elimination of Voter Turnout Requirement for Property Tax Measures Amendment (May 1998)
11. Oregon Measure 62, Campaign Finance and Signature Gathering Regulation Initiative (1998)
12. Oregon Measure 63, Supermajority Vote for Ballot Measures Proposing Supermajority Requirements Initiative (1998)
13. South Dakota Amendment D, Authorize Citizen Initiatives for Local Government Consolidation Measure (1998)
14. Utah Proposition 5, Two-Thirds Vote Requirement for Hunting-Related Initiatives Amendment (1998)
15. Wyoming Signature Distribution Requirements, Amendment B (1998)

1996

1. Alaska Measure 1, Approval Requirement for Changes to Statehood Act Amendment (1996)
2. Arkansas Legal Changes to Ballot Titles, Proposed Amendment 3 (1996)
3. California Proposition 218, Voter Approval Requirement for Local Tax Increases Initiative (1996)
4. Colorado Amendment 13, Initiative, Referendum, and Petition Process Initiative (1996)
5. Florida Amendment 1, Two-Thirds Vote Requirement for State Taxes or Fees Constitutional Amendment Initiative (1996)
6. Maine Question 8, Municipal Certification of Direct Initiative Petitions Amendment (1996)
7. Minnesota Amendment 1, Recall of Elected Officials Amendment (1996)
8. Missouri Amendment 4, Voter Approval on Tax Increases Measure (April 1996)
9. Nebraska Initiative Measure 410, Changes to Initiative Signature Requirements Amendment (1996)
10. Nevada Question 3, Recall Petition Requirements Amendment (1996)
11. New Mexico Amendment 3 (1996)
12. New Mexico Amendment 4 (1996)
13. Oregon Measure 24, Requirements for Initiative Petition Signatures Amendment (May 1996)
14. Oregon Measure 33, Legislative Limits on Changing Voter Approved Statutes Initiative (1996)
15. Oregon Measure 46, Require Majority of Registered Voters to Approve Tax Increase Ballot Measures Initiative (1996)
16. Rhode Island Question 8, Initiative Process Advisory Question (1996)
17. South Dakota Amendment B, Supermajority Vote Required to Raise Taxes Measure (1996)

1994

1. Alaska Measure 5, Voter Approval Requirement for Capital Relocation Bonds Initiative (1994)
2. California Proposition 183, Changes to Laws Governing Recall Elections Amendment (1994)
3. Colorado Amendment 12, Election and Legislative Measure Reform Initiative (1994)
4. Colorado Referendum A, Single-Subject Rule for Initiatives Amendment (1994)
5. Colorado Referendum B, Ballot Measure Booklet Amendment (1994)
6. Florida Amendment 4, Initiatives on Raising Government Revenue Initiative (1994)
7. Massachusetts Question 1, Contributions to Ballot Measure Campaigns Initiative (1994)
8. Missouri Amendment 1, Alternative County Government Form Measure (1994)
9. Missouri Amendment 7, Tax Increase Limits Initiative (1994)
10. North Dakota Publication of City Government Minutes, Measure 3 (1994)

1993

1. New Jersey Right of Recall, Public Question 1 (1993)

1992

1. Colorado Amendment 1, Taxpayer’s Bill of Rights (TABOR) Initiative (1992)
2. Georgia Amendment 8, Repeal of Local Amendments Amendment (1992)
3. Mississippi Amendment 8, Establish Initiated Constitutional Amendments Measure (1992)
4. Missouri Amendment 1, Four-Sevenths Majority for Tax Increases Measure (1992)
5. Missouri Amendment 10, St. Louis Bond Issue Approval Requirement Measure (1992)
6. Missouri Amendment 7, Approval of Property Tax Rates Measure (August 1992)
7. Oklahoma State Question 640, Voter Approval for Tax Legislation Initiative (March 1992)
8. Rhode Island Recall of Statewide Elected Officials, Proposal 1 (1992)

1991

1. Texas Proposition 1, Charter Amendment in Home-Rule Cities Amendment (1991)
2. Texas Proposition 8, State Debt Ballot Questions Amendment (1991)

1990

1. California Proposition 136, Changes to Vote Requirements for New or Increased Taxes Initiative (1990)
2. California Proposition 137, Voter Approval for Certain Rules Governing Initiatives Amendment (1990)
3. Missouri Amendment 3, Four-Sevenths Majority for Tax Increases Measure (August 1990)
4. Montana Valid Election for Qualified Ballot Issues, C-21 (1990)

1988

1. Colorado Amendment No. 2, Reimbursements for Recall Elections Amendment (1988)
2. Missouri Amendment 4, Required Majority Vote for Bond Approval Measure (August 1988)
3. Nebraska Amendment 3A, Signature Requirements for Signers of Initiatives Measure (1988)
4. Nevada Question 1, Filing Deadlines for Initiatives and Referendums Amendment (1988)
5. New Jersey Public Question No. 4 (1988)
6. North Dakota Referred Measure Amendment or Repeal Vote Referendum, Measure 1 (1988)
7. North Dakota Suspension of Tax Measures Referendum, Measure 1 (1988)
8. South Carolina Constitutional Provisions, Amendment 8 (1988)
9. South Dakota Amendment A, Remove Legislature from Initiative Process Measure (1988)

1986

1. Arizona Proposition 102, Method of Increasing Local Spending Limits Amendment (1986)
2. California Proposition 62, Approval of Local Taxes Initiative (1986)
3. Colorado Amendment No. 3, Franchises in Home Rule Municipalities Amendment (1986)
4. Florida Amendment 4, Supreme Court Advisory Opinions on Initiatives Amendment (1986)
5. Georgia Amendment 6, Voter Approval of Road Construction Authorities Measure (1986)
6. Maine Obscene Material Prohibition Initiative (June 1986)
7. Maine Question 1, Mandatory Local Measured Phone Service Ban Initiative (1986)
8. Oregon Measure 3, Verification of Initiative and Referendum Petition Signatures Amendment (May 1986)
9. Rhode Island Question 5, Citizen-Initiated Ballot Measure Process and Nonpartisan Constitutional Convention Candidates Amendment (1986)
10. Wyoming Initiative and Referendum, Amendment 1 (1986)

1985

1. Maine Direct Democracy on Nuclear Waste Disposal and Storage, Low Level Radioactive Waste Siting Issue 1 (1985)
2. Washington HJR 22, Voter Approval of Excess School Tax Levies Amendment (1985)

1984

1. Arizona Proposition 100, Initiative and Referendum Petition Filing Deadlines Amendment (1984)
2. Georgia Amendment 11, Required Referendum for Municipal Redevelopment Powers Measure (1984)
3. Nevada Question 12, Government Taxes and Fees Initiative (1984)
4. Oregon Measure 1, Number of Signatures for Recall Referendum Amendment (1984)

1982

1. Alabama Constitutional Change Applying to One County Amendment (1982)
2. Maine Question 1, Adjust Individual Income Tax for Inflation Initiative (1982)
3. Maryland Alteration of Signature Requirements, Question 5 (1982)
4. Missouri Amendment 11, Four-Sevenths Vote to Issue Bonds Measure (1982)
5. Missouri Amendment 4, Maximum School Taxes Rate Measure (August 1982)
6. North Carolina Allow for Tax Increment Bonds Without Voter Approval Amendment (1982)

1981

1. Maine Proposed Constitutional Amendment No. 1, Initiative Signature Validity and Form of Ballot Question Measure (1981)
2. Washington Initiative 394, Voter Approval for Energy Project Bonds Measure (1981)
3. Washington SJR 133, Initiatives to the Legislature Signature Submission and Verification Timeline Amendment (1981)
4. Wisconsin Question 1, Recall Primary Elections Amendment (April 1981)

1980

1. California Proposition 4, Elections Regarding Low-Income Housing Amendment (June 1980)
2. Colorado Amendment No. 1, Initiative and Referendum Process Amendment (1980)
3. Idaho SJR 112, Simple Majority Vote for Citizen Initiatives and Allow Initiatives on General Election Ballots Amendment (1980)
4. Maine Proposed Constitutional Amendment No. 2, Ballot Initiative and Veto Referendum Elections Measure (1980)
5. Michigan Proposal D, Voter Approval Requirement for New or Increased Taxes Initiative (1980)
6. Minnesota Amendment 5, Initiative and Referendum Amendment (1980)
7. North Dakota Election Law Revision Referendum, Measure 8 (1980)
8. South Dakota Amendment C, Prohibit Legislature from Changing Initiated Laws Measure (1980)
9. South Dakota Amendment D, Legislative Restrictions to Amend Initiated Laws (1980)
10. Utah Initiative B, Property Tax Limit and Vote Requirements for New Taxes Measure (1980)

1978

1. Alaska Ballot Proposition 3, Voter Approval Requirement for Capital Relocation Costs Initiative (1978)
2. Georgia Amendment 15, Public Official Recall Measure (1978)
3. Massachusetts Question 3, Allow Ballot Question Information to Be Sent to Eligible Voters or Households Amendment (1978)
4. Massachusetts Question 5, Local Charter Commission Referral Timeline Amendment (1978)
5. Michigan Proposal E, Tax Limitations and Funding Requirements Initiative (1978)
6. Michigan Proposal J, Tax Limitations and Program Funding Initiative (1978)
7. Missouri Amendment 10, Allow Counties to Increase Property Taxes for Road and Bridge Measure (1978)
8. North Dakota Direct Democracy Referendum, Amendment 3 (1978)
9. Ohio Issue 1, Ballot Board to Write Measure Language Amendment (June 1978)
10. Oregon Measure 1, Initiative and Referendum Requirements for County Home Rule Amendment (May 1978)
11. South Carolina Constitutional Article Revisions, Amendment 4 (1978)
12. South Dakota Amendment D, Approval for Income Tax Increase Measure (1978)

1977

1. Maine Uniform State Property Tax Initiative (December 1977)

1976

1. Georgia Amendment 14, Voting Requirements for Utility Revenue Certificates Measure (1976)
2. Maryland Petition Filing Requirements, Question 13 (1976)
3. Michigan Proposal C, Tax Limitation Initiative (1976)
4. Montana Recall and Recall Advisory, I-73 (1976)
5. Nevada Question 10, Limits of Initiative Questions Amendment (1976)
6. Ohio Issue 7, Initiative and Referendum Signature Requirements Initiative (1976)
7. Utah Initiative A, Prohibit Fluoridation of Public Water Without Voter-Approved Initiative Measure (1976)
8. Utah Initiative B, Authorize Recall Elections for Public Officers Measure (1976)
9. Washington SJR 137, Two-Year Excess School Taxes Amendment (1976)

1975

1. Maine Question 4, Initiative and Referendum Petition Procedures Amendment (1975)

1974

1. Alaska Amendment 1, Votes on Constitutional Amendments at General Elections Measure (August 1974)
2. Arizona Proposition 101, Recall Election Timing and Candidate Nomination Deadlines Amendment (1974)
3. Arizona Proposition 102, Require Minimum 10% Turnout for Bond and Assessment Elections Amendment (1974)
4. California Proposition 15, Remove Voter Approval Requirement for Public Low-Rent Housing Projects Amendment (1974)
5. California Proposition 9, Fair Political Practices Commission and Election and Campaign Policies Initiative (June 1974)
6. California Proposition 9, Recall of Elected Officials Amendment (1974)
7. Georgia Amendment 7, Revenue Certificate Elections Measure (1974)
8. Idaho Constitutional Amendments Published in Newspapers, SJR 118 (1974)
9. Kansas Elections, Amendment 2 (1974)
10. Maine Weight of Commercial Vehicles and Related Provisions Referendum (1974)
11. Minnesota Amendment 2, Lower Vote Requirement to Amend the State Constitution Amendment (1974)
12. Missouri Amendment 2, Voter Approval Requirements for Local Government Bonds for Industrial Projects Measure (1974)
13. Ohio Issue 3, Ohio Ballot Board and Constitutional Amendments Measure (May 1974)
14. Oklahoma State Question 495, Simple Majority Vote for Citizen Initiatives Measure (August 1974)
15. Oklahoma State Question 496, Simple Majority Vote for Constitutional Amendments Measure (August 1974)
16. South Carolina Constitutional Article Revisions, Amendment 4 (1974)
17. South Dakota Amendment A, Restructure of Legislative Department Measure (1974)
18. South Dakota Amendment B, Voting Rights Expansion Measure (1974)

1972

1. California Proposition 9, Approval of Bond Measures for School Structures Amendment (1972)
2. Florida Amendment 3, Single Subject Initiatives Amendment (1972)
3. Louisiana Special Elections Amendment (1972)
4. Maine Question 1, General Election Ballot Form Initiative (June 1972)
5. Nevada Question 1, Initiative Petitions Filing Deadline Amendment (1972)
6. Nevada Question 5, Require Initiatives Proposing Spending Include Funding Source Amendment (1972)
7. Nevada Question 6, Non-conflicting and Conflicting Amendments Amendment (1972)
8. North Dakota Direct Democracy Signature Requirements, Alternate Proposition 2 (1972)
9. South Dakota Amendment E, Initiated Constitutional Amendment and Constitution Revision Measure (1972)
10. Washington HJR 47, Formula Governing Excess Property Tax Levies Amendment (1972)
11. Washington SJR 5, 60% Vote Requirement for Lotteries Amendment (1972)

1971

1. Ohio Publication of Ballot Measures in Newspapers Amendment (1971)

1970

1. California Proposition 16, Constitutional Amendments and Conventions Amendment (1970)
2. California Proposition 5, Constitutional Revisions and Civil Service Amendment (June 1970)
3. Missouri Amendment 2, Expand Charter County Authority to Provide Countywide Services Measure (1970)
4. Nebraska Amendment 8, Home Rule Charters Amendment (1970)
5. Nevada Question 2, Recall Requirements Amendment (1970)
6. Oregon Measure 11, Restrictions on Government Zoning Outside of City Limits Initiative (1970)
7. South Dakota Amendment B, Initiative and Referendum Requirements Measure (1970)
8. South Dakota Amendment I, Constitutional Revision Measure (1970)
9. Utah Proposition 2, Create a Single-Subject Rule for Constitutional Amendments Measure (1970)
10. Virginia Question 1, Constitutional Revision Amendment (1970)

1968

1. Arkansas Legislative Authority to Submit Ballot Measures, Proposed Amendment 54 (1968)
2. Florida Amendment 1, Constitution Revision Measure (1968)
3. Louisiana Publication of Proposed Amendments Amendment (1968)
4. Missouri Amendment 1, Voter Approval of Municipal Bonds Measure (1968)
5. Nebraska Amendment 5, Special Constitutional Amendment Elections Amendment (1968)
6. Oregon Measure 2, Change Initiative and Referendum Signature Requirements from Based on Supreme Court to Gubernatorial Election Turnout Amendment (May 1968)
7. South Carolina Constitutional Article Revisions, Amendment 4 (1968)
8. Wyoming Amendment 2, Initiative and Referendum Process Measure (1968)

1967

1. Pennsylvania Question 7, Constitutional Amendment Procedures During Emergencies Amendment (May 1967)

1966

1. California Proposition 1A, Revisions to the Constitution Amendment (1966)
2. California Proposition 4, Approval Percentage for Bond Issues About Schools and Libraries Amendment (1966)

1964

1. Florida Amendment 11, Additional Method of Revising the Constitution Amendment (1964)
2. South Dakota Amendment B, Amendment Notification Measure (1964)

1962

1. California Proposition 6, State Bond Legislative Ballot Measure Process Amendment (1962)
2. California Proposition 7, Allow Legislature to Propose Constitutional Revisions Amendment (1962)
3. Maryland Change the Number of Signatures Required on a Petition, Amendment 2 (1962)
4. Nevada Question 2, Replace Indirect Process and Require Initiated Constitutional Amendments to Pass Twice Initiative (1962)
5. Washington SJR 25, State Constitutional Amendment Publication Requirement Change Amendment (1962)

1960

1. Michigan Proposal 3, Vote Requirement for Constitutional Convention Questions and Delegate Elections Initiative (1960)
2. Missouri Amendment 4, Municipal Indebtedness Measure (1960)

1958

1. Florida Amendment 1, Linked Proposed Constitutional Amendments Amendment (1958)
2. Nevada Question 1, Signature Increase and Distribution Requirement for Initiatives Amendment (1958)
3. North Dakota Direct Democracy and Publicity Pamphlet, Referendum 2 (1958)

1956

1. Washington SJR 4, Change Signature Requirements for Initiatives and Referendums Amendment (1956)

1954

1. Oregon Measure 4, Increase Signature Requirement for Citizen-Initiated Constitutional Amendments Measure (1954)

1952

1. Missouri Amendment 2, School District Debt Limit Measure (1952)
2. Nebraska Amendment 6, Publication of Constitutional Amendments Measure (1952)
3. Oklahoma State Question 353, Single-Subject Rule and Separate-Vote Requirement for Constitutional Amendments Measure (July 1952)
4. Oregon Measure Nos. 306-307, Require Voter Approval to Increase Tax Limit Amendment (1952)
5. Washington Substitute SJR 7, Limits on Legislative Alteration of Voter-Approved Ballot Measures Amendment (1952)

1951

1. Kentucky Unlimited Constitutional Amendments Referendum (1951)
2. Maine Question 6, Direct Initiatives Signature Requirements Amendment (September 1951)

1950

1. California Proposition 10, Ballot Measures Required for Publicly Funded Low-Rent Housing Projects Initiative (1950)
2. California Proposition 2, Prohibit Naming Individuals to Public Office Through Ballot Measures Amendment (1950)
3. Maine Proposed Constitutional Amendment 2, Change Filing Date for Initiated Legislation Measure (September 1950)
4. Massachusetts Question 2, Percentage-Based Signature Requirement for Citizen-Initiated Ballot Measures Amendment (1950)
5. Missouri Amendment 1, Increase of School Taxes Measure (1950)

1948

1. California Proposition 10, Single-Subject Rule for Initiatives Amendment (1948)
2. Maine Proposed Constitutional Amendment 1, Change Initiative Petition Signature Requirements Measure (September 1948)

1946

1. California Proposition 12, Legislative Alteration of Voter-Approved Initiatives Amendment (1946)
2. Washington Initiative 166, Voter Approval on Public Utility Districts Acquisition Measure (1946)

1944

1. Massachusetts Question 1, Require Summary for Ballot Measures Amendment (1944)

1942

1. Florida Amendment 2, Legislatively Referred Constitutional Amendments Amendment (1942)
2. North Dakota Constitutional Amendments Referendum (1942)
3. North Dakota Direct Democracy Referendum (1942)

1941

1. Michigan Proposal 1, Initiated Constitutional Amendment Signature Verification and Fraud Penalties Amendment (April 1941)
2. Michigan Proposal 2, Initiated Statute and Referendum Signature Verification and Fraud Penalties Amendment (April 1941)

1940

1. Missouri Amendment 4, Change Signature Requirement Basis for Initiative Petitions Measure (1940)
2. North Dakota Legislative Power and Direct Democracy Referendum (1940)
3. North Dakota Recall Referendum (1940)

1939

1. Ohio Initiative and Referendum Signature Requirements Initiative (1939)

1938

1. California Proposition 17, Require Initiatives to Qualify 130 Days Before Election Amendment (1938)
2. Nebraska Amendment 6, State Executive Officer Recalls Amendment (1938)

1936

1. North Dakota Legislative Power and Direct Democracy Referendum (1936)

1934

1. Colorado Measure 4, Voters to Impose or Approve Excise Taxes Initiative (1934)
2. Idaho HJR 7, Simple Majority Vote for Citizen Initiatives Measure (1934)
3. Michigan Proposal No. 4, County Home Rule Initiative (1934)

1933

1. Oregon Measure Nos. 308-309, Two-Thirds Vote for Municipal Bonds Amendment (July 1933)

1932

1. California Proposition 17, City Charters Amendment (1932)
2. California Proposition 8, Attorney General to Write Ballot Titles and Summaries for Initiatives Amendment (1932)
3. North Carolina Allow Special Elections for Constitutional Amendments Measure (1932)
4. North Dakota Future Constitutional Amendments Referendum (1932)
5. North Dakota Legislative Power and Direct Democracy Referendum (1932)

1930

1. Arizona Measure Nos. 102-103, Require Approval of Bond Issues and Special Assessments by Real Property Taxpayers Amendment (1930)

1928

1. Florida Local and Special Laws Amendment (1928)

1926

1. Oregon Measure Nos. 312-313, Fill Vacancies Created by Recalls Amendment (1926)
2. Wisconsin Question 1, Recall of Elected Officials Amendment (1926)

1924

1. Missouri Amendment 2, Initiative and Referendum Signature Requirement Increase Measure (February 1924)
2. Missouri Amendment 20, Constitutional Amendment Publication Requirement Measure (February 1924)
3. South Dakota Referred Law 3, Primary Elections Law Referendum (1924)

1923

1. Ohio Publication of Ballot Measures in Newspapers Amendment (1923)

1922

1. California Proposition 27, Initiative Signature Requirement Initiative (1922)
2. South Dakota Amendment B, Initiative and Referendum Signature Increase Measure (1922)

1920

1. California Proposition 4, Initiative Signature Requirement Initiative (1920)
2. Missouri Amendment 3, Allow Large Cities to Increase Bonded Debt for Public Utility Acquisition Measure (1920)
3. Missouri Amendment 4, Property Tax for Road Districts Measure (1920)
4. Nebraska Amendment 39, Constitutional Amendment Vote Requirements Amendment (September 1920)
5. Nebraska Amendment 4, Initiative and Referendum Signature Requirements Amendment (September 1920)
6. North Dakota Recall of Public Officers Referendum (1920)

1918

1. Colorado Measure 5, Publication of Ballot Measures Amendment (1918)
2. Massachusetts Question 1, Initiative and Referendum Process Amendment (1918)
3. Michigan Printing of Ballot Measures Amendment (1918)
4. North Dakota Requirements for Constitutional Amendment Passage Initiative (1918)
5. North Dakota Simplified Initiative and Referendum Process Initiative (1918)
6. Ohio Veto Referendums on Legislative Ratification of Federal Constitutional Amendments Initiative (1918)

1916

1. Arizona Measure Nos. 100-101, Require Majority of Votes Cast in Election to Approve Ballot Initiatives Amendment (1916)
2. Minnesota Amendment 7, Initiative and Referendum Measure (1916)
3. Washington Referendum 3, Require Initiative and Referendum Petition Signers to Sign in Presence of Registration Officer Measure (1916)
4. Washington Referendum 4, Recall of Elected Officers Measure (1916)

1915

1. California Proposition 3, Superior Judge Terms Amendment (October 1915)
2. California Proposition 7, Two-Thirds Vote Requirement for Initiated Bond Measures Amendment (October 1915)
3. Maryland Amendment 4, Establish Veto Referendum Amendment (1915)
4. Ohio Prohibit Re-Submitting Twice Rejected Constitutional Amendments for Six Years Initiative (1915)

1914

1. Arizona Measure Nos. 102-103, Eight-Year Waiting Period for Repeated Prohibition Elections Initiative (1914)
2. Arizona Measure Nos. 108-109, Prohibit Legislative Changes or Governor's Veto of Initiatives and Referendums Amendment (1914)
3. Colorado Measure 1, Rules on Rejected and Conflicting Initiative Initiative (1914)
4. Colorado Measure 4, Right to Petition Governor for Special Election on Measures Initiative (1914)
5. Minnesota Amendment 1, Initiative and Referendum Measure (1914)
6. Minnesota Recall of Public Officials, Amendment 8 (1914)
7. Mississippi Initiative and Referendum Amendment (1914)
8. Missouri Amendment 1, Initiative and Referendum Tax-Related Subject Restrictions Measure (1914)
9. Missouri Amendment 6, Local Government Property Tax for Road Funding Measure (1914)
10. Missouri Amendment 8, Changes to Charter Amendment Process for Large Cities Measure (1914)
11. North Dakota Establish Initiated Constitutional Amendments Measure (1914)
12. North Dakota Initiative and Referendum Measure (1914)
13. South Dakota Amendment 4, Municipal Initiative and Referendum Measure (1914)
14. Texas Proposition 1, Initiative and Referendum Process Amendment (1914)
15. Wisconsin Question 1, Legislative Process for Constitutional Amendments Measure (1914)
16. Wisconsin Question 2, Initiative and Referendum Amendment (1914)
17. Wisconsin Question 6, Recall of Elected Officials Amendment (1914)
18. Wisconsin Question 8, Provide for Initiated Constitutional Amendments Measure (1914)

1913

1. Maine Question 2, Constitutional Amendment Voting Amendment (September 1913)
2. Massachusetts Grant the Legislature Full Power of Referral of Laws to the Public Amendment (1913)
3. Michigan Initiatives and Referendums for Statutes Amendment (April 1913)
4. Michigan Initiatives for Constitutional Amendments Amendment (April 1913)
5. Michigan Recall of Elective Officers Amendment (April 1913)

1912

1. Arizona Measure Nos. 101-102, Recall of Elected Officials Amendment (1912)
2. Arkansas Recall of Elective Officers, Amendment 14 (September 1912)
3. Colorado "Headless Ballot", Measure 14 (1912)
4. Colorado Measure 7, Cost for Publishing Information on Measures Initiative (1912)
5. Colorado Measure 9, Recall of Elective Officials Initiative (1912)
6. Colorado Special Elections for Initiatives and Referendums, Measure 11 (1912)
7. Idaho Right to Recall Any Public Office, HJR 19 (1912)
8. Idaho SJR 12, Veto Referendum Process Amendment (1912)
9. Idaho SJR 13, Initiative Process Amendment (1912)
10. Mississippi Initiative and Referendum Amendment (1912)
11. Nebraska Amendment 1, Initiative and Referendum Amendment (1912)
12. Nevada State Question 1, Nevada Initiative and Referendum Amendment (1912)
13. Nevada State Question 2, Public Officer Recall Amendment (1912)
14. Ohio Initiative and Referendum Process Amendment (September 1912)
15. Ohio Simple Majority Vote for Constitutional Amendments Measure (September 1912)
16. Oregon Measure Nos. 310-311, Require Majority of Votes Cast in Election to Approve Constitutional Amendments Measure (1912)
17. Oregon Measure Nos. 322-323, Require Majority of Votes Cast in Election to Approve Ballot Initiatives Measure (1912)
18. Washington Initiative and Referendum Process Amendment (1912)
19. Washington Recall Elections Process Amendment (1912)
20. Wyoming Amendment 1, Initiative and Referendum Measure (1912)

1911

1. California Proposition 7, Initiative and Referendum Amendment (October 1911)
2. California Proposition 8, Recall of Elected Officials Amendment (October 1911)

1910

1. Arkansas Amendment 10, Initiative and Referendum Process Measure (September 1910)
2. Colorado Referendum 3, Initiative and Referendum Amendment (1910)
3. Illinois Initiative and Referendum Process Advisory Question (1910)
4. Missouri Amendment 4, City of St. Louis Charter Amendment Process Measure (1910)
5. Oregon Measure Nos. 360-361, Direct Democracy, Electoral System, and Legislature Changes Initiative (1910)

1908

1. Maine Constitutional Revision Election Amendment (September 1908)
2. Maine Initiative and Referendum Amendment (1908)
3. Michigan Constitution Revision Measure (1908)
4. Missouri Amendment 3, Initiative and Referendum Process Measure (1908)
5. Oregon Measure Nos. 324-325, Recall of Public Officials Initiative (June 1908)
6. Texas Proposition 2, School District Taxes Amendment (1908)

1906

1. Delaware Initiative and Referendum Advisory Question (1906)
2. Montana Amendment 1, Initiative and Referendum Amendment (1906)
3. Oregon Measure Nos. 308-309, Methods for Amending the State Constitution Initiative (June 1906)
4. Oregon Measure Nos. 314-315, Local Initiative and Referendum Process Initiative (June 1906)

1904

1. Missouri Amendment 2, Initiative and Referendum Process Measure (1904)
2. Nevada Question 1, Veto Referendum Process Amendment (1904)

1902

1. Illinois Local Initiative and Referendum Process Advisory Question (1902)
2. Illinois State Initiative and Referendum Process Advisory Question (1902)
3. Oregon Measure Nos. 105-106, Initiative and Referendum Process Amendment (June 1902)

1900

1. Utah Initiative and Referendum Amendment (1900)

1898

1. South Dakota Initiative and Referendum Process Amendment (1898)

1888

1. Nevada State Question 27, Amendment Enactment Time Amendment (1888)

1886

1. Nevada State Question 1, Constitutional Amendments Approval Amendment (1886)

1876

1. Michigan Submission of Amendments to the People Amendment (1876)

1835

1. North Carolina State Constitution Revisions Amendment (1835)

Alabama

1. Alabama Constitutional Change Applying to One County Amendment (1982)
2. Alabama Special County Educational Tax Amendment, Amendment 2 (2010)

Alaska

1. Alaska Amendment 1, Votes on Constitutional Amendments at General Elections Measure (August 1974)
2. Alaska Ballot Measure 1, Increase Maximum Local Residential Property Tax Exemption Initiative (August 2012)
3. Alaska Ballot Proposition 3, Voter Approval Requirement for Capital Relocation Costs Initiative (1978)
4. Alaska Measure 1, Approval Requirement for Changes to Statehood Act Amendment (1996)
5. Alaska Measure 1, Change Signature Distribution Requirement for Initiatives Amendment (2004)
6. Alaska Measure 1, Prohibit Ballot Initiatives on Hunting Amendment (2000)
7. Alaska Measure 2, Single-Subject Rule for Constitutional Amendments Measure (2000)
8. Alaska Measure 5, Voter Approval Requirement for Capital Relocation Bonds Initiative (1994)

Arizona

1. Arizona Limit Local Tax Rate on Groceries to 2% of Base Price and Require Voter Approval to Increase Tax Rate Measure (2026) - On the ballot
2. Arizona Measure Nos. 100-101, Require Majority of Votes Cast in Election to Approve Ballot Initiatives Amendment (1916)
3. Arizona Measure Nos. 101-102, Recall of Elected Officials Amendment (1912)
4. Arizona Measure Nos. 102-103, Eight-Year Waiting Period for Repeated Prohibition Elections Initiative (1914)
5. Arizona Measure Nos. 102-103, Require Approval of Bond Issues and Special Assessments by Real Property Taxpayers Amendment (1930)
6. Arizona Measure Nos. 108-109, Prohibit Legislative Changes or Governor's Veto of Initiatives and Referendums Amendment (1914)
7. Arizona Proposition 100, Initiative and Referendum Petition Filing Deadlines Amendment (1984)
8. Arizona Proposition 101, Recall Election Timing and Candidate Nomination Deadlines Amendment (1974)
9. Arizona Proposition 101, Require Ballot Initiatives Proposing Spending to Include Provisions on Revenue Generation Amendment (2004)
10. Arizona Proposition 102, Method of Increasing Local Spending Limits Amendment (1986)
11. Arizona Proposition 102, Require Minimum 10% Turnout for Bond and Assessment Elections Amendment (1974)
12. Arizona Proposition 102, Two-Thirds Vote Requirement for Hunting-Related Initiatives Amendment (2000)
13. Arizona Proposition 104, Extending Initiative Petition Circulation Period and Changing Filing Deadline Amendment (2004)
14. Arizona Proposition 104, Limits on Legislative Alteration of Voter-Approved Initiatives and Referendums Amendment (1998)
15. Arizona Proposition 105, Prohibit Legislative Alteration of Ballot Initiatives Amendment (1998)
16. Arizona Proposition 105, Supermajority Requirement for Tax and Spending Initiatives Amendment (2008)
17. Arizona Proposition 112, Ballot Initiative Filing Deadline Amendment (2010)
18. Arizona Proposition 128, Legislative Changes to Ballot Initiatives with Invalid Provisions Amendment (2022)
19. Arizona Proposition 129, Single-Subject Requirement for Ballot Initiatives Amendment (2022)
20. Arizona Proposition 132, 60% Vote Requirement for Ballot Measures to Approve Taxes Amendment (2022)
21. Arizona Proposition 134, Signature Distribution Requirement for Initiatives Amendment (2024)
22. Arizona Proposition 136, Legal Challenges to Constitutionality of Initiatives Amendment (2024)

Arkansas

1. Arkansas Amendment 10, Initiative and Referendum Process Measure (September 1910)
2. Arkansas Ballot Measure Signature Requirements Amendment, Issue 2 (2014)
3. Arkansas Create a Fundamental Right to Initiative and Referendum Amendment (2026) - Potential
4. Arkansas Initiative and Referendum Process Amendment (2026) - Potential
5. Arkansas Issue 2, 60% Supermajority Vote Requirement for Constitutional Amendments and Ballot Initiatives Measure (2022)
6. Arkansas Issue 2, Countywide Voter Approval for New Casino Licenses and Repeal Casino Licenses in Pope County Initiative (2024)
7. Arkansas Issue 3, Initiative Process and Legislative Referral Requirements Amendment (2020)
8. Arkansas Legal Changes to Ballot Titles, Proposed Amendment 3 (1996)
9. Arkansas Legislative Authority to Submit Ballot Measures, Proposed Amendment 54 (1968)
10. Arkansas Recall of Elective Officers, Amendment 14 (September 1912)

California

1. California Allow Voting on Citizen Initiatives at Primary Elections Measure (2026) - Potential
2. California Authorize Citizen-Initiated Constitutional Revisions Amendment (2026) - Potential
3. California Changes to Initiative Process and Requirements Initiative (2026) - Potential
4. California Eliminate State Officer Recall Successor Elections Amendment (2026) - On the ballot
5. California Proposition 10, Ballot Measures Required for Publicly Funded Low-Rent Housing Projects Initiative (1950)
6. California Proposition 10, Single-Subject Rule for Initiatives Amendment (1948)
7. California Proposition 12, Legislative Alteration of Voter-Approved Initiatives Amendment (1946)
8. California Proposition 136, Changes to Vote Requirements for New or Increased Taxes Initiative (1990)
9. California Proposition 137, Voter Approval for Certain Rules Governing Initiatives Amendment (1990)
10. California Proposition 15, Remove Voter Approval Requirement for Public Low-Rent Housing Projects Amendment (1974)
11. California Proposition 16, Constitutional Amendments and Conventions Amendment (1970)
12. California Proposition 17, City Charters Amendment (1932)
13. California Proposition 17, Require Initiatives to Qualify 130 Days Before Election Amendment (1938)
14. California Proposition 183, Changes to Laws Governing Recall Elections Amendment (1994)
15. California Proposition 1A, Revisions to the Constitution Amendment (1966)
16. California Proposition 2, Prohibit Naming Individuals to Public Office Through Ballot Measures Amendment (1950)
17. California Proposition 218, Voter Approval Requirement for Local Tax Increases Initiative (1996)
18. California Proposition 219, Uniform Application of Ballot Measures Amendment (June 1998)
19. California Proposition 26, Simple Majority Vote for Local School Bonds and Charter School Facilities Initiative (March 2000)
20. California Proposition 27, Initiative Signature Requirement Initiative (1922)
21. California Proposition 3, Superior Judge Terms Amendment (October 1915)
22. California Proposition 39, Decrease Supermajority from Two-Thirds to 55% for School Bonds Amendment (2000)
23. California Proposition 4, Approval Percentage for Bond Issues About Schools and Libraries Amendment (1966)
24. California Proposition 4, Elections Regarding Low-Income Housing Amendment (June 1980)
25. California Proposition 4, Initiative Signature Requirement Initiative (1920)
26. California Proposition 5, Constitutional Revisions and Civil Service Amendment (June 1970)
27. California Proposition 5, Lower Supermajority Requirement to 55% for Local Bond Measures to Fund Housing and Public Infrastructure Amendment (2024)
28. California Proposition 50, Legislator Suspension Amendment (June 2016)
29. California Proposition 53, Voter Approval Requirement for Revenue Bonds above $2 Billion (2016)
30. California Proposition 6, State Bond Legislative Ballot Measure Process Amendment (1962)
31. California Proposition 6, Voter Approval for Future Gas and Vehicle Taxes and 2017 Tax Repeal Initiative (2018)
32. California Proposition 62, Approval of Local Taxes Initiative (1986)
33. California Proposition 65, Local Government Revenue Reduction Voter Approval Requirement Initiative (2004)
34. California Proposition 7, Allow Legislature to Propose Constitutional Revisions Amendment (1962)
35. California Proposition 7, Initiative and Referendum Amendment (October 1911)
36. California Proposition 7, Two-Thirds Vote Requirement for Initiated Bond Measures Amendment (October 1915)
37. California Proposition 71, Effective Date of Ballot Measures Amendment (June 2018)
38. California Proposition 8, Attorney General to Write Ballot Titles and Summaries for Initiatives Amendment (1932)
39. California Proposition 8, Recall of Elected Officials Amendment (October 1911)
40. California Proposition 9, Approval of Bond Measures for School Structures Amendment (1972)
41. California Proposition 9, Fair Political Practices Commission and Election and Campaign Policies Initiative (June 1974)
42. California Proposition 9, Recall of Elected Officials Amendment (1974)
43. California Supermajority Requirement for Initiatives Establishing One-Time Revenue Sources Amendment (2026) - Potential
44. California Two-Thirds Vote Requirement for Special Taxes Initiative (2026) - Potential
45. California Vote Requirements for Initiatives Requiring Supermajority Votes Amendment (2026) - On the ballot

Colorado

1. Colorado "Headless Ballot", Measure 14 (1912)
2. Colorado Amendment 1, Taxpayer’s Bill of Rights (TABOR) Initiative (1992)
3. Colorado Amendment 12, Election and Legislative Measure Reform Initiative (1994)
4. Colorado Amendment 13, Initiative, Referendum, and Petition Process Initiative (1996)
5. Colorado Amendment 38, Citizens' Initiative and Referendum Process Initiative (2006)
6. Colorado Amendment 71, 55% Vote Requirement and Signature Distribution Requirement for Constitutional Amendments Measure (2016)
7. Colorado Amendment K, Initiative and Referendum Filing and Judicial Retention Filing Deadlines Amendment (2024)
8. Colorado Amendment No. 1, Initiative and Referendum Process Amendment (1980)
9. Colorado Amendment No. 2, Reimbursements for Recall Elections Amendment (1988)
10. Colorado Amendment No. 3, Franchises in Home Rule Municipalities Amendment (1986)
11. Colorado Measure 1, Rules on Rejected and Conflicting Initiative Initiative (1914)
12. Colorado Measure 4, Right to Petition Governor for Special Election on Measures Initiative (1914)
13. Colorado Measure 4, Voters to Impose or Approve Excise Taxes Initiative (1934)
14. Colorado Measure 5, Publication of Ballot Measures Amendment (1918)
15. Colorado Measure 7, Cost for Publishing Information on Measures Initiative (1912)
16. Colorado Measure 9, Recall of Elective Officials Initiative (1912)
17. Colorado Proposition GG, Include Income Tax Effects in Initiative Ballot Language Measure (2022)
18. Colorado Referendum 3, Initiative and Referendum Amendment (1910)
19. Colorado Referendum A, Single-Subject Rule for Initiatives Amendment (1994)
20. Colorado Referendum B, Ballot Measure Booklet Amendment (1994)
21. Colorado Referendum F, Recalls of Elected Officials Amendment (2006)
22. Colorado Referendum O, Citizens' Initiative Changes Amendment (2008)
23. Colorado Special Elections for Initiatives and Referendums, Measure 11 (1912)

Delaware

1. Delaware Initiative and Referendum Advisory Question (1906)

Florida

1. Florida Amendment 1, Constitution Revision Measure (1968)
2. Florida Amendment 1, Linked Proposed Constitutional Amendments Amendment (1958)
3. Florida Amendment 1, Two-Thirds Vote Requirement for State Taxes or Fees Constitutional Amendment Initiative (1996)
4. Florida Amendment 11, Additional Method of Revising the Constitution Amendment (1964)
5. Florida Amendment 2, Abolish the Constitution Revision Commission Measure (2022)
6. Florida Amendment 2, Economic Impact Statements for Initiatives Amendment (2002)
7. Florida Amendment 2, Legislatively Referred Constitutional Amendments Amendment (1942)
8. Florida Amendment 2, Requirements for Citizens' Initiatives Amendment (2004)
9. Florida Amendment 3, 60% Majority Requirement for Constitutional Amendments Amendment (2006)
10. Florida Amendment 3, Single Subject Initiatives Amendment (1972)
11. Florida Amendment 3, Voter Approval of Casino Gambling Initiative (2018)
12. Florida Amendment 4, Comprehensive Land Use Plan Referenda Initiative (2010)
13. Florida Amendment 4, Initiatives on Raising Government Revenue Initiative (1994)
14. Florida Amendment 4, Require Constitutional Amendments to be Passed Twice Initiative (2020)
15. Florida Amendment 4, Supreme Court Advisory Opinions on Initiatives Amendment (1986)
16. Florida Local and Special Laws Amendment (1928)

Georgia

1. Georgia Amendment 11, Required Referendum for Municipal Redevelopment Powers Measure (1984)
2. Georgia Amendment 14, Voting Requirements for Utility Revenue Certificates Measure (1976)
3. Georgia Amendment 15, Public Official Recall Measure (1978)
4. Georgia Amendment 5, School Sales Tax Referendums Amendment (2018)
5. Georgia Amendment 6, Voter Approval of Road Construction Authorities Measure (1986)
6. Georgia Amendment 7, Revenue Certificate Elections Measure (1974)
7. Georgia Amendment 8, Repeal of Local Amendments Amendment (1992)

Hawaii

1. Hawaii Simple Majority Vote for Constitutional Amendments Measure (2026) - Potential

Idaho

1. Idaho Constitutional Amendments Published in Newspapers, SJR 118 (1974)
2. Idaho HJR 4, Grant Legislature Exclusive Authority and Prohibit Citizen-Initiated Measures on Marijuana, Narcotics, and Psychoactive Substances Amendment (2026) - On the ballot
3. Idaho HJR 7, Simple Majority Vote for Citizen Initiatives Measure (1934)
4. Idaho Right to Recall Any Public Office, HJR 19 (1912)
5. Idaho SJR 112, Simple Majority Vote for Citizen Initiatives and Allow Initiatives on General Election Ballots Amendment (1980)
6. Idaho SJR 12, Veto Referendum Process Amendment (1912)
7. Idaho SJR 13, Initiative Process Amendment (1912)

Illinois

1. Illinois Governor Recall Amendment (2010)
2. Illinois Initiative and Referendum Process Advisory Question (1910)
3. Illinois Local Initiative and Referendum Process Advisory Question (1902)
4. Illinois State Initiative and Referendum Process Advisory Question (1902)

Kansas

1. Kansas Constitutional Amendment 2, County Sheriff Election and Recall Amendment (2022)
2. Kansas Elections, Amendment 2 (1974)

Kentucky

1. Kentucky Unlimited Constitutional Amendments Referendum (1951)

Louisiana

1. Louisiana Publication of Proposed Amendments Amendment (1968)
2. Louisiana Special Elections Amendment (1972)

Maine

1. Maine Constitutional Revision Election Amendment (September 1908)
2. Maine Direct Democracy on Nuclear Waste Disposal and Storage, Low Level Radioactive Waste Siting Issue 1 (1985)
3. Maine Initiative and Referendum Amendment (1908)
4. Maine Obscene Material Prohibition Initiative (June 1986)
5. Maine Proposed Constitutional Amendment 1, Change Initiative Petition Signature Requirements Measure (September 1948)
6. Maine Proposed Constitutional Amendment 2, Change Filing Date for Initiated Legislation Measure (September 1950)
7. Maine Proposed Constitutional Amendment No. 1, Initiative Signature Validity and Form of Ballot Question Measure (1981)
8. Maine Proposed Constitutional Amendment No. 2, Ballot Initiative and Veto Referendum Elections Measure (1980)
9. Maine Question 1, Adjust Individual Income Tax for Inflation Initiative (1982)
10. Maine Question 1, General Election Ballot Form Initiative (June 1972)
11. Maine Question 1, Impose Maximum Limit on Property Taxes and Require Voter Approval to Raise the Limit Initiative (2004)
12. Maine Question 1, Limit Annual Increase in Government Spending and Require Voter Approval for Tax Increases Initiative (2006)
13. Maine Question 1, Mandatory Local Measured Phone Service Ban Initiative (1986)
14. Maine Question 1, Voter Approval of Borrowing Above $1 Billion by State Entities and Electric Cooperatives Initiative (2023)
15. Maine Question 2, Allow for Alternative Initiative Signatures for Persons with Disabilities Amendment (2019)
16. Maine Question 2, Change Deadline for Submission of Signatures for Statewide Initiatives Measures (2006)
17. Maine Question 2, Constitutional Amendment Voting Amendment (September 1913)
18. Maine Question 4, Initiative and Referendum Petition Procedures Amendment (1975)
19. Maine Question 5, Change Time Period of Judicial Review of Initiative Petitions Amendment (2023)
20. Maine Question 6, Direct Initiatives Signature Requirements Amendment (September 1951)
21. Maine Question 7, Municipal Certification Deadline for Initiatives Amendment (2009)
22. Maine Question 7, Remove Residency Requirement for Initiative Petition Circulators Amendment (2023)
23. Maine Question 8, Municipal Certification of Direct Initiative Petitions Amendment (1996)
24. Maine Question 8, People's Veto Election Timing Amendment (1999)
25. Maine Uniform State Property Tax Initiative (December 1977)
26. Maine Weight of Commercial Vehicles and Related Provisions Referendum (1974)

Maryland

1. Maryland Alteration of Signature Requirements, Question 5 (1982)
2. Maryland Amendment 4, Establish Veto Referendum Amendment (1915)
3. Maryland Change the Number of Signatures Required on a Petition, Amendment 2 (1962)
4. Maryland Petition Filing Requirements, Question 13 (1976)

Massachusetts

1. Massachusetts Grant the Legislature Full Power of Referral of Laws to the Public Amendment (1913)
2. Massachusetts Question 1, Contributions to Ballot Measure Campaigns Initiative (1994)
3. Massachusetts Question 1, Initiative and Referendum Process Amendment (1918)
4. Massachusetts Question 1, Require Summary for Ballot Measures Amendment (1944)
5. Massachusetts Question 2, Percentage-Based Signature Requirement for Citizen-Initiated Ballot Measures Amendment (1950)
6. Massachusetts Question 3, Allow Ballot Question Information to Be Sent to Eligible Voters or Households Amendment (1978)
7. Massachusetts Question 5, Local Charter Commission Referral Timeline Amendment (1978)

Michigan

1. Michigan Constitution Revision Measure (1908)
2. Michigan Initiatives and Referendums for Statutes Amendment (April 1913)
3. Michigan Initiatives for Constitutional Amendments Amendment (April 1913)
4. Michigan Printing of Ballot Measures Amendment (1918)
5. Michigan Proposal 04-1, Voter Approval of Gambling Initiative (2004)
6. Michigan Proposal 1, Initiated Constitutional Amendment Signature Verification and Fraud Penalties Amendment (April 1941)
7. Michigan Proposal 2, Initiated Statute and Referendum Signature Verification and Fraud Penalties Amendment (April 1941)
8. Michigan Proposal 3, Vote Requirement for Constitutional Convention Questions and Delegate Elections Initiative (1960)
9. Michigan Proposal 5, Two-Thirds Legislative or Voter Approval Requirement for New or Increased Taxes Initiative (2012)
10. Michigan Proposal 6, Require Statewide and Local Voter Approval for State Spending on New International Bridges and Tunnels Initiative (2012)
11. Michigan Proposal C, Tax Limitation Initiative (1976)
12. Michigan Proposal D, Voter Approval Requirement for New or Increased Taxes Initiative (1980)
13. Michigan Proposal E, Tax Limitations and Funding Requirements Initiative (1978)
14. Michigan Proposal J, Tax Limitations and Program Funding Initiative (1978)
15. Michigan Proposal No. 4, County Home Rule Initiative (1934)
16. Michigan Recall of Elective Officers Amendment (April 1913)
17. Michigan Submission of Amendments to the People Amendment (1876)

Minnesota

1. Minnesota Amendment 1, Initiative and Referendum Measure (1914)
2. Minnesota Amendment 1, Recall of Elected Officials Amendment (1996)
3. Minnesota Amendment 2, Lower Vote Requirement to Amend the State Constitution Amendment (1974)
4. Minnesota Amendment 5, Initiative and Referendum Amendment (1980)
5. Minnesota Amendment 7, Initiative and Referendum Measure (1916)
6. Minnesota Recall of Public Officials, Amendment 8 (1914)

Mississippi

1. Mississippi Amendment 8, Establish Initiated Constitutional Amendments Measure (1992)
2. Mississippi Initiative and Referendum Amendment (1912)
3. Mississippi Initiative and Referendum Amendment (1914)
4. Mississippi Resident Only Initiative Petition Circulation, Amendment 1 (1998)

Missouri

1. Missouri Amendment 1, Alternative County Government Form Measure (1994)
2. Missouri Amendment 1, Change Signature Deadline for Ballot Initiatives Measure (1998)
3. Missouri Amendment 1, Four-Sevenths Majority for Tax Increases Measure (1992)
4. Missouri Amendment 1, Increase of School Taxes Measure (1950)
5. Missouri Amendment 1, Initiative and Referendum Tax-Related Subject Restrictions Measure (1914)
6. Missouri Amendment 1, Voter Approval of Municipal Bonds Measure (1968)
7. Missouri Amendment 10, Allow Counties to Increase Property Taxes for Road and Bridge Measure (1978)
8. Missouri Amendment 10, St. Louis Bond Issue Approval Requirement Measure (1992)
9. Missouri Amendment 11, Four-Sevenths Vote to Issue Bonds Measure (1982)
10. Missouri Amendment 2, Expand Charter County Authority to Provide Countywide Services Measure (1970)
11. Missouri Amendment 2, Initiative and Referendum Process Measure (1904)
12. Missouri Amendment 2, Initiative and Referendum Signature Requirement Increase Measure (February 1924)
13. Missouri Amendment 2, School District Debt Limit Measure (1952)
14. Missouri Amendment 2, Voter Approval Requirements for Local Government Bonds for Industrial Projects Measure (1974)
15. Missouri Amendment 2, Voter Approval Requirements for School Property Taxes Measure (1998)
16. Missouri Amendment 20, Constitutional Amendment Publication Requirement Measure (February 1924)
17. Missouri Amendment 3, Allow Large Cities to Increase Bonded Debt for Public Utility Acquisition Measure (1920)
18. Missouri Amendment 3, Four-Sevenths Majority for Tax Increases Measure (August 1990)
19. Missouri Amendment 3, Initiative and Referendum Process Measure (1908)
20. Missouri Amendment 4, Change Signature Requirement Basis for Initiative Petitions Measure (1940)
21. Missouri Amendment 4, City of St. Louis Charter Amendment Process Measure (1910)
22. Missouri Amendment 4, Maximum School Taxes Rate Measure (August 1982)
23. Missouri Amendment 4, Municipal Indebtedness Measure (1960)
24. Missouri Amendment 4, Property Tax for Road Districts Measure (1920)
25. Missouri Amendment 4, Require Congressional District Approval for Initiated Constitutional Amendments, Prohibit Foreign Contributions, and Penalize Petition Fraud Amendment (2026) - On the ballot
26. Missouri Amendment 4, Required Majority Vote for Bond Approval Measure (August 1988)
27. Missouri Amendment 4, Voter Approval on Tax Increases Measure (April 1996)
28. Missouri Amendment 6, Local Government Property Tax for Road Funding Measure (1914)
29. Missouri Amendment 7, Approval of Property Tax Rates Measure (August 1992)
30. Missouri Amendment 7, Tax Increase Limits Initiative (1994)
31. Missouri Amendment 8, Changes to Charter Amendment Process for Large Cities Measure (1914)
32. Missouri Electronic Signatures for Citizen Initiatives Measure (2026) - Potential
33. Missouri Initiative Process, Foreign Campaign Funds, and Prohibition of Certain Activities by Legislators Amendment (2026) - Potential
34. Missouri Require 80% Vote for Legislative Changes to Citizen Initiatives Amendment (2026) - Potential
35. Missouri Require 90% Vote for Legislative Changes to Citizen Initiatives Amendment (2026) - Potential

Montana

1. Montana Amendment 1, Initiative and Referendum Amendment (1906)
2. Montana C-46, Initiated Amendment Distribution Requirements Measure (2020)
3. Montana C-47, Initiated Statute and Referendum Distribution Requirements Amendment (2020)
4. Montana Distribution Requirements for Constitutional Initiatives, C-37 (2002)
5. Montana Distribution Requirements for Statutory Initiatives, C-38 (2002)
6. Montana Recall and Recall Advisory, I-73 (1976)
7. Montana Valid Election for Qualified Ballot Issues, C-21 (1990)

Nebraska

1. Nebraska Amendment 1, Initiative and Referendum Amendment (1912)
2. Nebraska Amendment 39, Constitutional Amendment Vote Requirements Amendment (September 1920)
3. Nebraska Amendment 3A, Require Constitutional Amendments to Pass Twice Measure (2000)
4. Nebraska Amendment 3A, Signature Requirements for Signers of Initiatives Measure (1988)
5. Nebraska Amendment 3B, Initiative and Referendum Definition Measure (2000)
6. Nebraska Amendment 3C, Changes to Initiative Filing Requirements Measure (2000)
7. Nebraska Amendment 4, Initiative and Referendum Signature Requirements Amendment (September 1920)
8. Nebraska Amendment 5, Special Constitutional Amendment Elections Amendment (1968)
9. Nebraska Amendment 5A, Single Subject Requirement for Initiatives Measure (May 1998)
10. Nebraska Amendment 5B, Single Subject Requirement for Veto Referendums Measure (May 1998)
11. Nebraska Amendment 6, Publication of Constitutional Amendments Measure (1952)
12. Nebraska Amendment 6, State Executive Officer Recalls Amendment (1938)
13. Nebraska Amendment 8, Home Rule Charters Amendment (1970)
14. Nebraska Initiative Measure 410, Changes to Initiative Signature Requirements Amendment (1996)
15. Nebraska Initiative Measure 417, Authorize Gambling Laws by Initiative Amendment (2004)
16. Nebraska Initiative Measure 418, Legislative Supermajority to Modify Initiatives Amendment (2004)
17. Nebraska Require a Four-Fifths Vote for Legislative Ballot Initiative Changes Amendment (2026) - Potential

Nevada

1. Nevada Question 1, Conflicting Voter-Approved Laws Resolution Amendment (1998)
2. Nevada Question 1, Filing Deadlines for Initiatives and Referendums Amendment (1988)
3. Nevada Question 1, Initiative Petitions Filing Deadline Amendment (1972)
4. Nevada Question 1, Signature Increase and Distribution Requirement for Initiatives Amendment (1958)
5. Nevada Question 1, Veto Referendum Process Amendment (1904)
6. Nevada Question 10, Limits of Initiative Questions Amendment (1976)
7. Nevada Question 12, Government Taxes and Fees Initiative (1984)
8. Nevada Question 2, Recall Requirements Amendment (1970)
9. Nevada Question 2, Replace Indirect Process and Require Initiated Constitutional Amendments to Pass Twice Initiative (1962)
10. Nevada Question 3, Recall Petition Requirements Amendment (1996)
11. Nevada Question 5, Require Initiatives Proposing Spending Include Funding Source Amendment (1972)
12. Nevada Question 6, Non-conflicting and Conflicting Amendments Amendment (1972)
13. Nevada Require Initiative Description to Include Appropriation and Expenditure Language Amendment (2026) - Potential
14. Nevada State Question 1, Constitutional Amendments Approval Amendment (1886)
15. Nevada State Question 1, Nevada Initiative and Referendum Amendment (1912)
16. Nevada State Question 2, Public Officer Recall Amendment (1912)
17. Nevada State Question 27, Amendment Enactment Time Amendment (1888)

New Jersey

1. New Jersey Public Question No. 4 (1988)
2. New Jersey Right of Recall, Public Question 1 (1993)

New Mexico

1. New Mexico Amendment 3 (1996)
2. New Mexico Amendment 4 (1996)

North Carolina

1. North Carolina Allow Special Elections for Constitutional Amendments Measure (1932)
2. North Carolina Allow for Tax Increment Bonds Without Voter Approval Amendment (1982)
3. North Carolina State Constitution Revisions Amendment (1835)

North Dakota

1. North Dakota 60% Vote Requirement for Constitutional Amendments Measure (2026) - On the ballot
2. North Dakota Constitutional Amendments Referendum (1942)
3. North Dakota Constitutional Measure 2, Require Initiated Constitutional Amendments to be Approved by the Legislature or Passed Twice Amendment (2020)
4. North Dakota Constitutional Measure 2, Single-Subject Requirement for Initiatives and Require Constitutional Initiatives to be Passed Twice Amendment (2024)
5. North Dakota Direct Democracy Referendum, Amendment 3 (1978)
6. North Dakota Direct Democracy Referendum (1942)
7. North Dakota Direct Democracy Signature Requirements, Alternate Proposition 2 (1972)
8. North Dakota Direct Democracy and Publicity Pamphlet, Referendum 2 (1958)
9. North Dakota Election Law Revision Referendum, Measure 8 (1980)
10. North Dakota Establish Initiated Constitutional Amendments Measure (1914)
11. North Dakota Future Constitutional Amendments Referendum (1932)
12. North Dakota Initiative Filing Deadline Amendment, Measure 1 (June 2014)
13. North Dakota Initiative Measure Fiscal Impact Referendum, Constitutional Measure 2 (2004)
14. North Dakota Initiative and Referendum Measure (1914)
15. North Dakota Legislative Power and Direct Democracy Referendum (1932)
16. North Dakota Legislative Power and Direct Democracy Referendum (1936)
17. North Dakota Legislative Power and Direct Democracy Referendum (1940)
18. North Dakota Publication of City Government Minutes, Measure 3 (1994)
19. North Dakota Recall Referendum (1940)
20. North Dakota Recall of Public Officers Referendum (1920)
21. North Dakota Referral and Initiative Reform Amendment, Measure 4 (2014)
22. North Dakota Referred Measure Amendment or Repeal Vote Referendum, Measure 1 (1988)
23. North Dakota Requirements for Constitutional Amendment Passage Initiative (1918)
24. North Dakota Simplified Initiative and Referendum Process Initiative (1918)
25. North Dakota Single-Subject Requirement for Constitutional Amendments Measure (June 2026) - On the ballot
26. North Dakota Suspension of Tax Measures Referendum, Measure 1 (1988)

Ohio

1. Ohio Initiative and Referendum Process Amendment (September 1912)
2. Ohio Initiative and Referendum Signature Requirements Initiative (1939)
3. Ohio Issue 1, 60% Vote Requirement to Approve Constitutional Amendments Measure (2023)
4. Ohio Issue 1, Ballot Board to Write Measure Language Amendment (June 1978)
5. Ohio Issue 1, Ballot Initiative Signature Deadline Amendment (2008)
6. Ohio Issue 2, Ballot Initiatives to Create Monopolies Amendment (2015)
7. Ohio Issue 3, Ohio Ballot Board and Constitutional Amendments Measure (May 1974)
8. Ohio Issue 7, Initiative and Referendum Signature Requirements Initiative (1976)
9. Ohio Prohibit Re-Submitting Twice Rejected Constitutional Amendments for Six Years Initiative (1915)
10. Ohio Publication of Ballot Measures in Newspapers Amendment (1923)
11. Ohio Publication of Ballot Measures in Newspapers Amendment (1971)
12. Ohio Simple Majority Vote for Constitutional Amendments Measure (September 1912)
13. Ohio Veto Referendums on Legislative Ratification of Federal Constitutional Amendments Initiative (1918)

Oklahoma

1. Oklahoma State Question 353, Single-Subject Rule and Separate-Vote Requirement for Constitutional Amendments Measure (July 1952)
2. Oklahoma State Question 495, Simple Majority Vote for Citizen Initiatives Measure (August 1974)
3. Oklahoma State Question 496, Simple Majority Vote for Constitutional Amendments Measure (August 1974)
4. Oklahoma State Question 640, Voter Approval for Tax Legislation Initiative (March 1992)
5. Oklahoma State Question 698, Initiative Signature Requirements Amendment (2002)
6. Oklahoma State Question 750, Initiative and Referendum Signature Requirements Amendment (2010)

Oregon

1. Oregon Measure 1, Initiative and Referendum Requirements for County Home Rule Amendment (May 1978)
2. Oregon Measure 1, Number of Signatures for Recall Referendum Amendment (1984)
3. Oregon Measure 11, Restrictions on Government Zoning Outside of City Limits Initiative (1970)
4. Oregon Measure 2, Change Initiative and Referendum Signature Requirements from Based on Supreme Court to Gubernatorial Election Turnout Amendment (May 1968)
5. Oregon Measure 24, Requirements for Initiative Petition Signatures Amendment (May 1996)
6. Oregon Measure 26, Prohibit Payment Based On Per Signature Gathered Initiative (2002)
7. Oregon Measure 3, Verification of Initiative and Referendum Petition Signatures Amendment (May 1986)
8. Oregon Measure 33, Legislative Limits on Changing Voter Approved Statutes Initiative (1996)
9. Oregon Measure 4, Increase Signature Requirement for Citizen-Initiated Constitutional Amendments Measure (1954)
10. Oregon Measure 46, Require Majority of Registered Voters to Approve Tax Increase Ballot Measures Initiative (1996)
11. Oregon Measure 53, Elimination of Voter Turnout Requirement for Property Tax Measures Amendment (May 1998)
12. Oregon Measure 56, Eliminate Voter Turnout Requirement for Property Tax Elections Amendment (2008)
13. Oregon Measure 62, Campaign Finance and Signature Gathering Regulation Initiative (1998)
14. Oregon Measure 63, Supermajority Vote for Ballot Measures Proposing Supermajority Requirements Initiative (1998)
15. Oregon Measure 78, Lengthened Period for Verifying Petition Signatures Amendment (May 2000)
16. Oregon Measure 79, Increase Signature Requirement for Citizen-Initiated Constitutional Amendments Measure (May 2000)
17. Oregon Measure 93, Voter Approval of Taxes by Certain Approval Percentage Initiative (2000)
18. Oregon Measure 96, Prohibit Legislature from Making Initiative Process Harder Initiative (2000)
19. Oregon Measure Nos. 105-106, Initiative and Referendum Process Amendment (June 1902)
20. Oregon Measure Nos. 306-307, Require Voter Approval to Increase Tax Limit Amendment (1952)
21. Oregon Measure Nos. 308-309, Methods for Amending the State Constitution Initiative (June 1906)
22. Oregon Measure Nos. 308-309, Two-Thirds Vote for Municipal Bonds Amendment (July 1933)
23. Oregon Measure Nos. 310-311, Require Majority of Votes Cast in Election to Approve Constitutional Amendments Measure (1912)
24. Oregon Measure Nos. 312-313, Fill Vacancies Created by Recalls Amendment (1926)
25. Oregon Measure Nos. 314-315, Local Initiative and Referendum Process Initiative (June 1906)
26. Oregon Measure Nos. 322-323, Require Majority of Votes Cast in Election to Approve Ballot Initiatives Measure (1912)
27. Oregon Measure Nos. 324-325, Recall of Public Officials Initiative (June 1908)
28. Oregon Measure Nos. 360-361, Direct Democracy, Electoral System, and Legislature Changes Initiative (1910)

Pennsylvania

1. Pennsylvania Question 7, Constitutional Amendment Procedures During Emergencies Amendment (May 1967)

Rhode Island

1. Rhode Island Question 5, Citizen-Initiated Ballot Measure Process and Nonpartisan Constitutional Convention Candidates Amendment (1986)
2. Rhode Island Question 8, Initiative Process Advisory Question (1996)
3. Rhode Island Recall of Statewide Elected Officials, Proposal 1 (1992)

South Carolina

1. South Carolina Constitutional Article Revisions, Amendment 4 (1968)
2. South Carolina Constitutional Article Revisions, Amendment 4 (1974)
3. South Carolina Constitutional Article Revisions, Amendment 4 (1978)
4. South Carolina Constitutional Provisions, Amendment 8 (1988)

South Dakota

1. South Dakota Amendment 4, Municipal Initiative and Referendum Measure (1914)
2. South Dakota Amendment A, Remove Legislature from Initiative Process Measure (1988)
3. South Dakota Amendment A, Restructure of Legislative Department Measure (1974)
4. South Dakota Amendment B, Amendment Notification Measure (1964)
5. South Dakota Amendment B, Authorize Citizen Initiatives for Local Government Consolidation Measure (2000)
6. South Dakota Amendment B, Initiative and Referendum Requirements Measure (1970)
7. South Dakota Amendment B, Initiative and Referendum Signature Increase Measure (1922)
8. South Dakota Amendment B, Supermajority Vote Required to Raise Taxes Measure (1996)
9. South Dakota Amendment B, Voting Rights Expansion Measure (1974)
10. South Dakota Amendment C, Prohibit Legislature from Changing Initiated Laws Measure (1980)
11. South Dakota Amendment D, Approval for Income Tax Increase Measure (1978)
12. South Dakota Amendment D, Authorize Citizen Initiatives for Local Government Consolidation Measure (1998)
13. South Dakota Amendment D, Legislative Restrictions to Amend Initiated Laws (1980)
14. South Dakota Amendment E, Initiated Constitutional Amendment and Constitution Revision Measure (1972)
15. South Dakota Amendment I, Constitutional Revision Measure (1970)
16. South Dakota Constitutional Amendment C, 60% Vote Requirement for Ballot Measures Increasing Taxes or Appropriating $10 Million Measure (June 2022)
17. South Dakota Constitutional Amendment L, 60% Vote Requirement for Constitutional Amendments Measure (2026) - On the ballot
18. South Dakota Constitutional Amendment W, State Campaign Finance and Lobbying Laws, Government Accountability Board, and Initiative Process Amendment (2018)
19. South Dakota Constitutional Amendment X, 55% Vote Requirement to Approve Constitutional Amendments Measure (2018)
20. South Dakota Constitutional Amendment Z, Single-Subject Rule for Constitutional Amendments (2018)
21. South Dakota Initiated Measure 24, Ban Out-of-State Contributions to Ballot Question Committees Initiative (2018)
22. South Dakota Initiative and Referendum Process Amendment (1898)
23. South Dakota Referred Law 3, Primary Elections Law Referendum (1924)
24. South Dakota Require Three-Fourths Legislative Vote and Voter Approval to Amend Initiated Laws Initiative (2026) - Potential
25. South Dakota Require Voter Approval for Legislative Changes to Initiative and Referendum Process Amendment (2026) - Potential

Texas

1. Texas Proposition 1, Charter Amendment in Home-Rule Cities Amendment (1991)
2. Texas Proposition 1, Initiative and Referendum Process Amendment (1914)
3. Texas Proposition 2, School District Taxes Amendment (1908)
4. Texas Proposition 8, State Debt Ballot Questions Amendment (1991)

Utah

1. Utah 60% Vote Requirement for Ballot Initiatives to Increase or Expand Taxes Amendment (2026) - On the ballot
2. Utah Initiative A, Prohibit Fluoridation of Public Water Without Voter-Approved Initiative Measure (1976)
3. Utah Initiative B, Authorize Recall Elections for Public Officers Measure (1976)
4. Utah Initiative B, Property Tax Limit and Vote Requirements for New Taxes Measure (1980)
5. Utah Initiative and Referendum Amendment (1900)
6. Utah Proposition 2, Create a Single-Subject Rule for Constitutional Amendments Measure (1970)
7. Utah Proposition 5, Two-Thirds Vote Requirement for Hunting-Related Initiatives Amendment (1998)
8. Utah Publication Requirements for Constitutional Amendments Measure (2026) - On the ballot

Virginia

1. Virginia Question 1, Constitutional Revision Amendment (1970)

Washington

1. Washington "Protect the Initiative Act", Initiative 517 (2013)
2. Washington HJR 22, Voter Approval of Excess School Tax Levies Amendment (1985)
3. Washington HJR 4204, Simple Majority for Excess School Tax Levies Amendment (2007)
4. Washington HJR 47, Formula Governing Excess Property Tax Levies Amendment (1972)
5. Washington Initiative 1185, Tax Increase Approval Requirement Measure (2012)
6. Washington Initiative 166, Voter Approval on Public Utility Districts Acquisition Measure (1946)
7. Washington Initiative 394, Voter Approval for Energy Project Bonds Measure (1981)
8. Washington Initiative 960, Supermajority Approval for Tax Increases Measure (2007)
9. Washington Initiative and Referendum Process Amendment (1912)
10. Washington Recall Elections Process Amendment (1912)
11. Washington Referendum 3, Require Initiative and Referendum Petition Signers to Sign in Presence of Registration Officer Measure (1916)
12. Washington Referendum 4, Recall of Elected Officers Measure (1916)
13. Washington SJR 133, Initiatives to the Legislature Signature Submission and Verification Timeline Amendment (1981)
14. Washington SJR 137, Two-Year Excess School Taxes Amendment (1976)
15. Washington SJR 25, State Constitutional Amendment Publication Requirement Change Amendment (1962)
16. Washington SJR 4, Change Signature Requirements for Initiatives and Referendums Amendment (1956)
17. Washington SJR 5, 60% Vote Requirement for Lotteries Amendment (1972)
18. Washington Substitute SJR 7, Limits on Legislative Alteration of Voter-Approved Ballot Measures Amendment (1952)

Wisconsin

1. Wisconsin Question 1, Legislative Process for Constitutional Amendments Measure (1914)
2. Wisconsin Question 1, Recall Primary Elections Amendment (April 1981)
3. Wisconsin Question 1, Recall of Elected Officials Amendment (1926)
4. Wisconsin Question 2, Initiative and Referendum Amendment (1914)
5. Wisconsin Question 6, Recall of Elected Officials Amendment (1914)
6. Wisconsin Question 8, Provide for Initiated Constitutional Amendments Measure (1914)

Wyoming

1. Wyoming Amendment 1, Initiative and Referendum Measure (1912)
2. Wyoming Amendment 2, Initiative and Referendum Process Measure (1968)
3. Wyoming Constitutional Amendment B, Initiative Signature Distribution Requirement Measure (2008)
4. Wyoming Initiative and Referendum, Amendment 1 (1986)
5. Wyoming Presentation of Constitution, Constitutional Amendment D (2002)
6. Wyoming Signature Distribution Requirements, Amendment B (1998)

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