State legislative structure ballot measures

Issues
Measures by topic
Measures by year
Measures by state

As a state ballot measure topic, state legislative structure refers to measures regarding the structure of state legislatures, including the number of legislators and unicameral versus bicameral structures. 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: 2026 ballot measures and 2027 ballot measures

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

There are no ballot measures related to this topic that have qualified for the ballot.

List of ballot measures

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

Year

State

2022

1. American Samoa, Amendment 4, House of Representatives Size Measure (2022)
2. American Samoa, Amendment 6, Swains Island Voting Delegate Measure (2022)
3. American Samoa, Amendment 7, Senate Size Measure (2022)

2020

1. Idaho Constitutional Amendment HJR4, Require 35 Legislative Districts Amendment (2020)

2012

1. Oregon Measure 78, Government Branches Amendment (2012)

2010

1. Alaska Ballot Measure 1, Increase Size of State Legislature Amendment (2010)

2004

1. Nebraska Amendment 2, Change Presiding Officer of Legislature Measure (2004)
2. Virginia Question 2, Appointment of Governor in Cases of a Vacancy During an Emergency or Enemy Attack Amendment (2004)

1998

1. Georgia Amendment 5, Commission on Compensation of Public Officials Amendment (1998)
2. Nebraska Amendment 6, Change Presiding Officer of Legislature Measure (May 1998)
3. Nevada Question 8, Senate President Amendment (1998)

1996

1. North Dakota House Member Terms, Measure 3 (1996)

1990

1. North Dakota Lieutenant Governor as Presiding Officer, Measure 1 (1990)

1986

1. Idaho Limit Size of Legislature, HJR 4 (1986)

1984

1. North Dakota Legislative Assembly Article Referendum, Measure 2 (1984)

1982

1. North Carolina Legislative Office Term Start Date Amendment (1982)
2. North Dakota Legislative Assembly Article Referendum, Measure 2 (1982)

1980

1. Alaska Ballot Proposition 3, Authorization of Special Legislative Committees Amendment (1980)
2. Illinois Reduce Size of House of Representatives and Eliminate Cumulative Voting Initiative (1980)
3. North Dakota Legislative Article Referendum, Amendment 3 (1980)

1976

1. Alaska Ballot Proposition 6, Unicameral Legislature Question (1976)

1975

1. Maine Question 3, Single-Member Legislative Districts and Apportionment Commission Amendment (1975)

1974

1. Massachusetts Question 2, Reduce Size of House and Change Redistricting Process Amendment (1974)
2. Nebraska Amendment 2, Presiding Officer of the Legislature Amendment (May 1974)
3. New Hampshire Increase Size of Senate Amendment (1974)
4. South Dakota Amendment A, Restructure of Legislative Department Measure (1974)
5. South Dakota Amendment B, Voting Rights Expansion Measure (1974)

1972

1. Nebraska Amendment 1, Legislative Clarifications Amendment (May 1972)
2. Nebraska Amendment 6, Removal of Obsolete Legislative Language Amendment (May 1972)
3. Nebraska Amendment 8, State Retirement for Legislators Amendment (1972)
4. North Dakota Unicameral or Bicameral Legislature, Alternate Proposition 1 (1972)

1970

1. Nebraska Amendment 13a, Presiding Officer of the Legislature Amendment (1970)

1969

1. Maine Question 15, Odd Number of State Senators Amendment (1969)

1966

1. Missouri Amendment 3, Representative and Senatorial Districts Measure (January 1966)

1965

1. Missouri Amendment 3, State Legislative Apportionment and Staffing Limits Measure (August 1965)

1964

1. North Carolina Increase Size of Senate and Reduce Size of House Amendment (January 1964)

1962

1. California Proposition 23, Increase Size of Senate and Change Apportionment Rules Initiative (1962)
2. South Dakota Amendment, Legislative Sessions Measure (1962)

1960

1. South Dakota Amendment B, Senate District and County Division Limitations Measure (1960)
2. Virginia Question 2, Allow Elected Officials to Serve Multiple Districts Amendment (1960)

1953

1. Arizona Proposition 100, Size of State Legislature Amendment (September 1953)

1950

1. Maryland Membership in the House of Delegates, Amendment 4 (1950)
2. Oregon Measure Nos. 314-315, Increase Size of Senate and Require Reapportionment Every 10 Years Initiative (1950)
3. South Dakota Amendment A, Legislative Reapportionment Measure (1950)

1948

1. South Dakota Amendment A, Legislative Reapportionment Measure (1948)
2. Virginia Abolishing the Joint Committee on Special, Private, and Local Legislation Amendment (1948)

1944

1. Florida Amendment 2, Legislative Districts Amendment (1944)
2. Missouri Amendment 2, Unicameral Legislature Initiative (1944)

1942

1. Florida Amendment 6, Senate Districts and Redistricting Amendment (1942)

1938

1. Oklahoma State Question 243, Legislative Size and Salaries Amendment (1938)
2. South Dakota Amendment A, Legislature Membership Measure (1938)

1936

1. South Dakota Amendment A, Legislature Membership Size Measure (1936)

1934

1. Nebraska Amendment 2, Unicameral Legislature Initiative (1934)

1932

1. Arizona Measure Nos. 108-109, Reduce Size of House of Representatives Initiative (1932)

1930

1. Michigan Apportionment of the State Legislature Initiative (1930)

1928

1. Michigan Establishment of Legislative Districts Amendment (1928)

1924

1. Florida Apportionment of the Legislature Amendment (1924)
2. Michigan Establishment of Legislative Districts Initiative (1924)

1922

1. Colorado Measure 3, Apportionment of General Assembly Initiative (1922)
2. Florida Legislative Districts and Representatives Amendment (1922)

1921

1. New Hampshire Size of Legislature Amendment (1921)

1920

1. Nebraska Amendment 6, Number of State Senators Amendment (September 1920)

1916

1. Arizona Measure Nos. 112-113, Abolish State Senate and Create Unicameral Legislature Initiative (1916)
2. Florida Reapportionment of the Legislature Amendment (1916)

1914

1. Minnesota Limit Size of the State Senate, Amendment 7 (1914)
2. Oregon Measure Nos. 350-351, Unicameral Legislature Initiative (1914)
3. South Dakota Amendment 6, Four-Year Legislative Terms Measure (1914)

1912

1. Idaho Senate and House of Representatives Composition, HJR 13 (1912)
2. Minnesota Limit Size of State Senate, Amendment 6 (1912)
3. Oregon Measure Nos. 362-363, Unicameral Legislature and Proportional Representation Initiative (1912)

1900

1. Florida Representation of New Counties Amendment (1900)

1894

1. Nevada State Question 22, Legislative Authority Amendment (1894)

1888

1. Nevada State Question 5, Lieutenant Governor's Role in Senate Amendment (1888)

1881

1. Minnesota Amendment 3, Limiting Compensation of State Legislators Measure (1881)

1876

1. New York Amendment 2, Offices of State Prisons Amendment (1876)

1874

1. Connecticut Question 1, Granting Towns with Large Populations Two Representatives Amendment (1874)
2. New York Amendment 2, Powers and Guidelines of the Legislature Amendment (1874)

1835

1. North Carolina State Constitution Revisions Amendment (1835)

Alaska

1. Alaska Ballot Measure 1, Increase Size of State Legislature Amendment (2010)
2. Alaska Ballot Proposition 3, Authorization of Special Legislative Committees Amendment (1980)
3. Alaska Ballot Proposition 6, Unicameral Legislature Question (1976)

American Samoa

1. American Samoa, Amendment 4, House of Representatives Size Measure (2022)
2. American Samoa, Amendment 6, Swains Island Voting Delegate Measure (2022)
3. American Samoa, Amendment 7, Senate Size Measure (2022)

Arizona

1. Arizona Measure Nos. 108-109, Reduce Size of House of Representatives Initiative (1932)
2. Arizona Measure Nos. 112-113, Abolish State Senate and Create Unicameral Legislature Initiative (1916)
3. Arizona Proposition 100, Size of State Legislature Amendment (September 1953)

California

1. California Proposition 23, Increase Size of Senate and Change Apportionment Rules Initiative (1962)

Colorado

1. Colorado Measure 3, Apportionment of General Assembly Initiative (1922)

Connecticut

1. Connecticut Question 1, Granting Towns with Large Populations Two Representatives Amendment (1874)

Florida

1. Florida Amendment 2, Legislative Districts Amendment (1944)
2. Florida Amendment 6, Senate Districts and Redistricting Amendment (1942)
3. Florida Apportionment of the Legislature Amendment (1924)
4. Florida Legislative Districts and Representatives Amendment (1922)
5. Florida Reapportionment of the Legislature Amendment (1916)
6. Florida Representation of New Counties Amendment (1900)

Georgia

1. Georgia Amendment 5, Commission on Compensation of Public Officials Amendment (1998)

Idaho

1. Idaho Constitutional Amendment HJR4, Require 35 Legislative Districts Amendment (2020)
2. Idaho Limit Size of Legislature, HJR 4 (1986)
3. Idaho Senate and House of Representatives Composition, HJR 13 (1912)

Illinois

1. Illinois Reduce Size of House of Representatives and Eliminate Cumulative Voting Initiative (1980)

Maine

1. Maine Question 15, Odd Number of State Senators Amendment (1969)
2. Maine Question 3, Single-Member Legislative Districts and Apportionment Commission Amendment (1975)

Maryland

1. Maryland Membership in the House of Delegates, Amendment 4 (1950)

Massachusetts

1. Massachusetts Question 2, Reduce Size of House and Change Redistricting Process Amendment (1974)

Michigan

1. Michigan Apportionment of the State Legislature Initiative (1930)
2. Michigan Establishment of Legislative Districts Amendment (1928)
3. Michigan Establishment of Legislative Districts Initiative (1924)

Minnesota

1. Minnesota Amendment 3, Limiting Compensation of State Legislators Measure (1881)
2. Minnesota Limit Size of State Senate, Amendment 6 (1912)
3. Minnesota Limit Size of the State Senate, Amendment 7 (1914)

Missouri

1. Missouri Amendment 2, Unicameral Legislature Initiative (1944)
2. Missouri Amendment 3, Representative and Senatorial Districts Measure (January 1966)
3. Missouri Amendment 3, State Legislative Apportionment and Staffing Limits Measure (August 1965)

Nebraska

1. Nebraska Amendment 1, Legislative Clarifications Amendment (May 1972)
2. Nebraska Amendment 13a, Presiding Officer of the Legislature Amendment (1970)
3. Nebraska Amendment 2, Change Presiding Officer of Legislature Measure (2004)
4. Nebraska Amendment 2, Presiding Officer of the Legislature Amendment (May 1974)
5. Nebraska Amendment 2, Unicameral Legislature Initiative (1934)
6. Nebraska Amendment 6, Change Presiding Officer of Legislature Measure (May 1998)
7. Nebraska Amendment 6, Number of State Senators Amendment (September 1920)
8. Nebraska Amendment 6, Removal of Obsolete Legislative Language Amendment (May 1972)
9. Nebraska Amendment 8, State Retirement for Legislators Amendment (1972)

Nevada

1. Nevada Question 8, Senate President Amendment (1998)
2. Nevada State Question 22, Legislative Authority Amendment (1894)
3. Nevada State Question 5, Lieutenant Governor's Role in Senate Amendment (1888)

New Hampshire

1. New Hampshire Increase Size of Senate Amendment (1974)
2. New Hampshire Size of Legislature Amendment (1921)

New York

1. New York Amendment 2, Offices of State Prisons Amendment (1876)
2. New York Amendment 2, Powers and Guidelines of the Legislature Amendment (1874)

North Carolina

1. North Carolina Increase Size of Senate and Reduce Size of House Amendment (January 1964)
2. North Carolina Legislative Office Term Start Date Amendment (1982)
3. North Carolina State Constitution Revisions Amendment (1835)

North Dakota

1. North Dakota House Member Terms, Measure 3 (1996)
2. North Dakota Legislative Article Referendum, Amendment 3 (1980)
3. North Dakota Legislative Assembly Article Referendum, Measure 2 (1982)
4. North Dakota Legislative Assembly Article Referendum, Measure 2 (1984)
5. North Dakota Lieutenant Governor as Presiding Officer, Measure 1 (1990)
6. North Dakota Unicameral or Bicameral Legislature, Alternate Proposition 1 (1972)

Oklahoma

1. Oklahoma State Question 243, Legislative Size and Salaries Amendment (1938)

Oregon

1. Oregon Measure 78, Government Branches Amendment (2012)
2. Oregon Measure Nos. 314-315, Increase Size of Senate and Require Reapportionment Every 10 Years Initiative (1950)
3. Oregon Measure Nos. 350-351, Unicameral Legislature Initiative (1914)
4. Oregon Measure Nos. 362-363, Unicameral Legislature and Proportional Representation Initiative (1912)

South Dakota

1. South Dakota Amendment, Legislative Sessions Measure (1962)
2. South Dakota Amendment 6, Four-Year Legislative Terms Measure (1914)
3. South Dakota Amendment A, Legislative Reapportionment Measure (1948)
4. South Dakota Amendment A, Legislative Reapportionment Measure (1950)
5. South Dakota Amendment A, Legislature Membership Measure (1938)
6. South Dakota Amendment A, Legislature Membership Size Measure (1936)
7. South Dakota Amendment A, Restructure of Legislative Department Measure (1974)
8. South Dakota Amendment B, Senate District and County Division Limitations Measure (1960)
9. South Dakota Amendment B, Voting Rights Expansion Measure (1974)

Virginia

1. Virginia Abolishing the Joint Committee on Special, Private, and Local Legislation Amendment (1948)
2. Virginia Question 2, Allow Elected Officials to Serve Multiple Districts Amendment (1960)
3. Virginia Question 2, Appointment of Governor in Cases of a Vacancy During an Emergency or Enemy Attack Amendment (2004)

See also

• List of ballot measures by topic

Footnotes

State ballot measures

State

Alabama • Alaska • Arizona • Arkansas • California • Colorado • Connecticut • Florida • Georgia • Hawaii • Idaho • Illinois • Indiana • Iowa • Kansas • Kentucky • Louisiana • Maine • Maryland • Massachusetts • Michigan • Minnesota • Mississippi • Missouri • Montana • Nebraska • Nevada • New Hampshire • New Jersey • New Mexico • New York • North Carolina • North Dakota • Ohio • Oklahoma • Oregon • Pennsylvania • Rhode Island • South Carolina • South Dakota • Tennessee • Texas • Utah • Vermont • Virginia • Washington • West Virginia • Wisconsin • Wyoming

By year

2026 • 2025 • 2024 • 2023 • 2022 • 2021 • 2020 • 2019 • 2018 • 2017 • 2016 • 2015 • 2014 • 2013 • 2012 • 2011 • 2010 • 2009 • 2008 • 2007 • 2006 • 2005 • 2004 • 2003 • 2002 • 2001 • 2000 • 1999 • 1998 • 1997 • 1996 • 1995 • 1994 • 1993 • 1992 • 1991 • 1990 • 1989 • 1988 • 1987 • 1986 • 1985 • 1984 • 1983 • 1982 • 1981 • 1980 • 1979 • 1978 • 1977 • 1976 • 1975 • 1974 • 1973 • 1972 • 1971 • 1970 • 1969 • 1968 • 1967 • 1966 • 1965 • 1964 • 1963 • 1962 • 1961 • 1960 • 1959 • 1958 • 1957 • 1956 • 1955 • 1954 • 1953 • 1952 • 1951 • 1950 • 1949 • 1948 • 1947 • 1946 • 1945 • 1944 • 1943 • 1942 • 1941 • 1940 • 1939 • 1938 • 1937 • 1936 • 1935 • 1934 • 1933 • 1932 • 1931 • 1930 • 1929 • 1928 • 1927 • 1926 • 1925 • 1924 • 1923 • 1922 • 1921 • 1920 • 1919 • 1918 • 1917 • 1916 • 1915 • 1914 • 1913 • 1912 • 1911 • 1910 • 1909 • 1908 • 1907 • 1906 • 1905 • 1904 • 1903 • 1902 • 1901 • 1900