State legislative vote requirements ballot measures

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As a state ballot measure topic, state legislative vote requirements refer to measures regarding the thresholds required for legislative actions, such as tax increases, constitutional amendments, veto overrides, and budget approvals. The topic is grouped within the governance policy area.

This page provides information on:

• upcoming ballot measures and
• a comprehensive list of ballot measures by year and state.

Upcoming ballot measures

See also: 2025 ballot measures and 2026 ballot measures

The following is a list of state ballot measures related to state legislative vote requirements certified for this year and future elections:

2025

1. Louisiana Amendment 2, State Tax and Fiscal Policy Changes Amendment (March 2025)

List of ballot measures

Click the tabs to view state ballot measures related to state legislative vote requirements, organized by year or state.

Year

State

2025

1. Louisiana Amendment 2, State Tax and Fiscal Policy Changes Amendment (March 2025)

2021

1. Maine Question 1, Electric Transmission Line Restrictions and Legislative Approval Initiative (2021)

2018

1. Florida Amendment 5, Two-Thirds Vote of Legislature to Increase Taxes or Fees Amendment (2018)
2. Utah Constitutional Amendment C, Changes Related to Special Legislative Sessions and State Revenue Measure (2018)

2016

1. Alabama Impeachment, Amendment 6 (2016)
2. California Proposition 52, Continued Hospital Fee Revenue Dedicated to Medi-Cal Unless Voters Approve Changes (2016)

2012

1. Michigan Proposal 5, Two-Thirds Legislative or Voter Approval Requirement for New or Increased Taxes Initiative (2012)
2. Washington Initiative 1185, Tax Increase Approval Requirement Measure (2012)

2010

1. California Proposition 25, Simple Majority Vote to Enact State Budget Amendment (2010)
2. Louisiana Public Retirement Systems, Amendment 6 (2010)
3. Washington Initiative 1053, Two-Thirds Legislative Vote Required to Raise Taxes Measure (2010)

2007

1. Washington Initiative 960, Supermajority Approval for Tax Increases Measure (2007)

2004

1. California Proposition 56, Lower Threshold Required to Pass the State Budget Amendment (March 2004)
2. Nebraska Initiative Measure 418, Legislative Supermajority to Modify Initiatives Amendment (2004)

2002

1. Florida Amendment 4, Laws on Public Records and Meetings Exemptions Amendment (2002)
2. Michigan Proposal 02-1, Operation of the State Officers Compensation Commission Amendment (August 2002)

2001

1. South Dakota Amendment B, Establish Healthcare and Education Trust Funds Measure (April 2001)

2000

1. California Proposition 37, Define Fee as Tax for Supermajority Requirement Initiative (2000)
2. California Proposition 38, School Voucher Program Initiative (2000)
3. Michigan Proposal 2, Two-Thirds Legislative Vote Requirement for Certain State Laws Affecting Local Governments Initiative (2000)
4. Missouri Amendment 1, Budget Reserve Fund Measure (2000)
5. Utah Proposition 2, Create Trust Fund For Tobacco Settlement Money Amendment (2000)

1999

1. Iowa Supermajority to Raise Taxes, Amendment 2 (June 1999)

1998

1. Arkansas Votes for Tax or Fee Changes, Proposed Amendment 2 (1998)

1996

1. Alaska Measure 1, Approval Requirement for Changes to Statehood Act Amendment (1996)
2. Nevada Question 11, Legislative Supermajority for Tax Increases Initiative (1996)
3. North Carolina Establish the Governor's Veto Power Amendment (1996)
4. Oregon Measure 25, Three-Fifths Legislative Majority to Pass Revenue-Raising Bills Amendment (May 1996)
5. South Dakota Amendment B, Supermajority Vote Required to Raise Taxes Measure (1996)

1994

1. Michigan Proposal A, Taxation and School Operating Millage Rates Amendment (March 1994)
2. Nevada Question 11, Legislative Supermajority for Tax Increases Initiative (1994)
3. Oregon Measure 10, Require Two-Thirds Legislative Vote to Reduce Voter-Approved Criminal Sentences Initiative (1994)

1992

1. Arizona Proposition 108, Two-Thirds Vote for Legislature to Increase Revenue Initiative (1992)
2. Missouri Amendment 6, Budget Stabilization Fund Measure (1992)
3. Oklahoma State Question 640, Voter Approval for Tax Legislation Initiative (March 1992)

1990

1. California Proposition 136, Changes to Vote Requirements for New or Increased Taxes Initiative (1990)

1989

1. Michigan Proposal B, Taxation and School Funding Amendment (1989)

1988

1. Missouri Amendment 1, Legislative Sessions Measure (1988)
2. South Dakota Amendment C, Property Tax Limitation Measure (1988)

1984

1. Michigan Proposal C, Require Voter Approval for Tax Increases and Limit Local Nonresident Income Taxes Initiative (1984)

1983

1. Ohio Supermajority Requirement for Tax Increases Initiative (1983)

1981

1. Wisconsin Question 5, Banking Laws Supermajority Requirement Amendment (April 1981)

1980

1. Massachusetts Question 5, Require Local Approval or State Funding for Mandated Municipal Employment Costs Amendment (1980)
2. Michigan Proposal D, Voter Approval Requirement for New or Increased Taxes Initiative (1980)
3. South Dakota Amendment B, Property Tax Measure (1980)
4. South Dakota Amendment D, Legislative Restrictions to Amend Initiated Laws (1980)
5. Utah Initiative B, Property Tax Limit and Vote Requirements for New Taxes Measure (1980)

1978

1. South Dakota Amendment D, Approval for Income Tax Increase Measure (1978)

1976

1. Washington Initiative 325, Two-Thirds Vote for New Nuclear Power Facilities Measure (1976)

1974

1. Wisconsin Question 2, Legislative Removal of Judges Amendment (April 1974)

1972

1. Washington SJR 5, 60% Vote Requirement for Lotteries Amendment (1972)

1964

1. Massachusetts Question 3, Prohibit State Credit for Private Entities and Require Two-Thirds Legislative Vote to Loan Credit Amendment (1964)

1962

1. California Proposition 6, State Bond Legislative Ballot Measure Process Amendment (1962)

1942

1. Florida Amendment 2, Legislatively Referred Constitutional Amendments Amendment (1942)

1924

1. Missouri Amendment 8, Impeachment Proceeding for State Board of Education Measure (February 1924)

1914

1. Wisconsin Question 1, Legislative Process for Constitutional Amendments Measure (1914)

1912

1. Ohio Lower Legislative Veto Override Threshold Amendment (September 1912)

Alabama

1. Alabama Impeachment, Amendment 6 (2016)

Alaska

1. Alaska Measure 1, Approval Requirement for Changes to Statehood Act Amendment (1996)

Arizona

1. Arizona Proposition 108, Two-Thirds Vote for Legislature to Increase Revenue Initiative (1992)

Arkansas

1. Arkansas Votes for Tax or Fee Changes, Proposed Amendment 2 (1998)

California

1. California Proposition 136, Changes to Vote Requirements for New or Increased Taxes Initiative (1990)
2. California Proposition 25, Simple Majority Vote to Enact State Budget Amendment (2010)
3. California Proposition 37, Define Fee as Tax for Supermajority Requirement Initiative (2000)
4. California Proposition 38, School Voucher Program Initiative (2000)
5. California Proposition 52, Continued Hospital Fee Revenue Dedicated to Medi-Cal Unless Voters Approve Changes (2016)
6. California Proposition 56, Lower Threshold Required to Pass the State Budget Amendment (March 2004)
7. California Proposition 6, State Bond Legislative Ballot Measure Process Amendment (1962)

Florida

1. Florida Amendment 2, Legislatively Referred Constitutional Amendments Amendment (1942)
2. Florida Amendment 4, Laws on Public Records and Meetings Exemptions Amendment (2002)
3. Florida Amendment 5, Two-Thirds Vote of Legislature to Increase Taxes or Fees Amendment (2018)

Iowa

1. Iowa Supermajority to Raise Taxes, Amendment 2 (June 1999)

Louisiana

1. Louisiana Amendment 2, State Tax and Fiscal Policy Changes Amendment (March 2025)
2. Louisiana Public Retirement Systems, Amendment 6 (2010)

Maine

1. Maine Question 1, Electric Transmission Line Restrictions and Legislative Approval Initiative (2021)

Massachusetts

1. Massachusetts Question 3, Prohibit State Credit for Private Entities and Require Two-Thirds Legislative Vote to Loan Credit Amendment (1964)
2. Massachusetts Question 5, Require Local Approval or State Funding for Mandated Municipal Employment Costs Amendment (1980)

Michigan

1. Michigan Proposal 02-1, Operation of the State Officers Compensation Commission Amendment (August 2002)
2. Michigan Proposal 2, Two-Thirds Legislative Vote Requirement for Certain State Laws Affecting Local Governments Initiative (2000)
3. Michigan Proposal 5, Two-Thirds Legislative or Voter Approval Requirement for New or Increased Taxes Initiative (2012)
4. Michigan Proposal A, Taxation and School Operating Millage Rates Amendment (March 1994)
5. Michigan Proposal B, Taxation and School Funding Amendment (1989)
6. Michigan Proposal C, Require Voter Approval for Tax Increases and Limit Local Nonresident Income Taxes Initiative (1984)
7. Michigan Proposal D, Voter Approval Requirement for New or Increased Taxes Initiative (1980)

Missouri

1. Missouri Amendment 1, Budget Reserve Fund Measure (2000)
2. Missouri Amendment 1, Legislative Sessions Measure (1988)
3. Missouri Amendment 6, Budget Stabilization Fund Measure (1992)
4. Missouri Amendment 8, Impeachment Proceeding for State Board of Education Measure (February 1924)

Nebraska

1. Nebraska Initiative Measure 418, Legislative Supermajority to Modify Initiatives Amendment (2004)

Nevada

1. Nevada Question 11, Legislative Supermajority for Tax Increases Initiative (1994)
2. Nevada Question 11, Legislative Supermajority for Tax Increases Initiative (1996)

North Carolina

1. North Carolina Establish the Governor's Veto Power Amendment (1996)

Ohio

1. Ohio Lower Legislative Veto Override Threshold Amendment (September 1912)
2. Ohio Supermajority Requirement for Tax Increases Initiative (1983)

Oklahoma

1. Oklahoma State Question 640, Voter Approval for Tax Legislation Initiative (March 1992)

Oregon

1. Oregon Measure 10, Require Two-Thirds Legislative Vote to Reduce Voter-Approved Criminal Sentences Initiative (1994)
2. Oregon Measure 25, Three-Fifths Legislative Majority to Pass Revenue-Raising Bills Amendment (May 1996)

South Dakota

1. South Dakota Amendment B, Establish Healthcare and Education Trust Funds Measure (April 2001)
2. South Dakota Amendment B, Property Tax Measure (1980)
3. South Dakota Amendment B, Supermajority Vote Required to Raise Taxes Measure (1996)
4. South Dakota Amendment C, Property Tax Limitation Measure (1988)
5. South Dakota Amendment D, Approval for Income Tax Increase Measure (1978)
6. South Dakota Amendment D, Legislative Restrictions to Amend Initiated Laws (1980)

Utah

1. Utah Constitutional Amendment C, Changes Related to Special Legislative Sessions and State Revenue Measure (2018)
2. Utah Initiative B, Property Tax Limit and Vote Requirements for New Taxes Measure (1980)
3. Utah Proposition 2, Create Trust Fund For Tobacco Settlement Money Amendment (2000)

Washington

1. Washington Initiative 1053, Two-Thirds Legislative Vote Required to Raise Taxes Measure (2010)
2. Washington Initiative 1185, Tax Increase Approval Requirement Measure (2012)
3. Washington Initiative 325, Two-Thirds Vote for New Nuclear Power Facilities Measure (1976)
4. Washington Initiative 960, Supermajority Approval for Tax Increases Measure (2007)
5. Washington SJR 5, 60% Vote Requirement for Lotteries Amendment (1972)

Wisconsin

1. Wisconsin Question 1, Legislative Process for Constitutional Amendments Measure (1914)
2. Wisconsin Question 2, Legislative Removal of Judges Amendment (April 1974)
3. Wisconsin Question 5, Banking Laws Supermajority Requirement Amendment (April 1981)

See also

• List of ballot measures by topic