# List of Missouri ballot measures

Elections in Missouri :
Federal government
Presidential elections
1820
1824
1828
1832
1836
1840
1844
1848
1852
1856
1860
1864
1868
1872
1876
1880
1884
1888
1892
1896
1900
1904
1908
1912
1916
1920
1924
1928
1932
1936
1940
1944
1948
1952
1956
1960
1964
1968
1972
1976
1980
1984
1988
1992
1996
2000
2004
2008
2012
2016
2020
2024
Missouri bellwether
Presidential primaries
Democratic
2000
2004
2008
2012
2016
2020
2024
Republican
2000
2004
2008
2012
2016
2020
2024
U.S. Senate
1821
1825
1827
1830
1833
1836
1839
1842
1843 sp
1845
1849
1851
1857
1857 sp
1861
1863
1863 sp
1868
1871 sp
1874
1879
1879 sp
1881
1885
1887
1891
1893
1897
1899
1903
1905
1909
1911
1911
1914
1916
1918 sp
1920
1922
1926
1926 sp
1928
1932
1934
1938
1940
1944
1946
1950
1952
1956
1958
1960 sp
1962
1964
1968
1970
1974
1976
1980
1982
1986
1988
1992
1994
1998
2000
2002 sp
2004
2006
2010
2012
2016
2018
2022
2024
2028
U.S. House of Representatives
1820
1822
1824
1826
1828
1831
1832–33
1835
1836
1838
1839
AL sp
1840
1842
1844
1846
AL sp
1848
1850
1852
1854
1856
1858
1860
1st sp
1862
1864
1866
1867
3rd sp
1868
5th sp
1870
1872
1874
1876
1878
1880
7th sp
1882
2nd sp
1884
1886
1888
1889
4th sp
1890
14th sp
1892
1894
1896
1897
1st sp
1898
1899
8th sp
1900
1902
12th sp
1904
1906
1908
1910
6th sp
1912
1914
1916
1918
10th sp
1920
1921
4th sp
1922
1924
1926
11th sp
1928
1929
4th sp
1930
1931
7th sp
1932
1934
1936
1938
1940
1942
1943
6th sp
1944
1946
1948
10th sp
1950
1951
11th sp
1952
1954
1956
1958
1959
4th sp
1960
1962
1964
9th sp
1966
1968
1970
1972
1974
1976
6th sp
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
8th sp
1998
2000
2002
2004
2006
2008
2010
2012
2013
8th sp
2014
2016
2018
2020
2022
2024 :
State government
State elections
2008
2010
2012
2014
2016
2018
2020
2022
Gubernatorial elections
1820
1824
1825 sp
1828
1832
1836
1840
1844
1848
1852
1856
1857 sp
1860
1864
1868
1870
1872
1874
1876
1880
1884
1888
1892
1896
1900
1904
1908
1912
1916
1920
1924
1928
1932
1936
1940
1944
1948
1952
1956
1960
1964
1968
1972
1976
1980
1984
1988
1992
1996
2000
2004
2008
2012
2016
2020
2024
Lieutenant gubernatorial elections
1820
1824
1828
1832
1836
1840
1844
1848
1852
1856
1860
1864
1868
1870
1872
1874
1876
1880
1884
1888
1892
1896
1900
1904
1908
1912
1916
1920
1924
1928
1932
1936
1940
1944
1948
1952
1956
1960
1964
1968
1972
1976
1980
1984
1988
1992
1996
2000
2004
2008
2012
2016
2020
2024
Secretary of State elections
2012
2016
2020
2024
Attorney General elections
2012
2016
2020
2024
State Treasurer elections
2012
2016
2020
2024
State Auditor elections
2010
2014
2018
2022
Senate elections
2010
2012
2014
2016
2018
2020
2022
2024
House of Representatives elections
2010
2012
2014
2016
2018
2020
2022
2024
2026 :
Ballot measures
1999
Proposition B
2004
Amendment 2
2006
Amendment 2
2018
Proposition A
2020
Amendment 2
2022
Amendment 3
2024
Amendment 3 :
Columbia
Mayoral elections
2016
2019
2022 :
Jefferson City
Mayoral elections
2016
2019
2022 :
Joplin
Mayoral elections
2003
2007
2011
2015
2019
2023 :
Kansas City
Mayoral elections
2003
2007
2011
2015
2019
2023 :
Springfield
Mayoral elections
2021 :
St. Louis
Mayoral elections
1973
1977
1981
1985
1989
1993
1997
2001
2005
2009
2013
2017
2021
2025
Board of Aldermen elections
2023 :
vte :
The following is a list of statewide initiatives and referendums modifying state law and proposing state constitutional amendments in Missouri, sorted by election.

## 2000s
### 2004

August 2004 primary election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 2 | Prohibited same-sex marriages from being recognized in Missouri. | Passed | 1,055,771 (70.61%) | 439,529 (29.39%) |

### 2006

November 2006 general election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 2 | Stem Cell Research and Cures Initiative. Allows any stem cell research and therapy that is legal under federal law, including somatic cell nuclear transfer to produce human embryos for stem cell production. It prohibits cloning or attempting to clone a human being. | Passed | 1,085,396 (51.2%) | 1,034,596 (48.8%) |

### 2008

November 2008 general election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 1 | English Official Language Amendment. Would establish English as the official language in all government meetings. | Passed | 2,407,536 (86.31%) | 381,874 (13.69%) |
| Amendment 4 | Storm Water Control Finance Amendment. Would limit grants and loans to only be given to public water and sewer districts. | Passed | 1,494,107 (57.85%) | 1,088,728 (42.15%) |
| Proposition A | Gambling Loss Limits Act. Would eliminate gambling loss limits while restricting the number of casinos that can be built in the state and increasing the gambling tax to provide for public school education. | Passed | 1,578,674 (56.17%) | 1,231,892 (43.83%) |
| Proposition B | Quality Homecare Council Act. Would create the Missouri Quality Homecare Council which would be tasked with improving health care for the elderly. | Passed | 2,077,831 (75.26%) | 683,137 (24.74%) |
| Proposition C | Clean Energy Act. Would require utility companies to slowly increase their usage of renewable energy. | Passed | 1,777,500 (66.03%) | 914,332 (33.97%) |

## 2010s
### 2010

August 2010 primary election :
| Proposal | Description | Result | Yes votes | No votes |
| Proposition C | Healthcare Freedom Act. Prohibit the government to impose penalties on people who do not purchase health insurance. | Passed | 669,847 (71.07%) | 272,723 (28.93%) |
November 2010 general election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 1 | Election of Charter County Assessors Amendment. Would require all county assessors to be an elected position (except in Jackson County). | Passed | 1,360,556 (74.12%) | 475,000 (25.88%) |
| Amendment 2 | Prisoner of War Property Tax Exemption Amendment. All property owned by former prisoner of war used as their household is exempt from property taxes. | Passed | 1,227,297 (65.76%) | 639,065 (34.24%) |
| Amendment 3 | Real Estate Taxation Amendment. Would prohibit any new tax on the selling or transferring of real estate. | Passed | 1,592,177 (83.73%) | 309,398 (16.27%) |
| Proposition A | Earnings Tax Act. Would require cities to hold referendums on earnings tax levied by the city. | Passed | 1,297,197 (68.39%) | 599,672 (31.61%) |
| Proposition B | Dog Breeding Regulation Act. Would require large-scale dog breeding operations to provide humane treatment and limits the number of dogs they can own. Also would create the misdemeanor crime of "puppy mill cruelty." | Passed | 997,870 (51.59%) | 936,190 (48.41%) |

### 2012

August 2012 primary election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 2 | Public Prayer Amendment. Would guarantee the right to pray and worship on public property. Also required public schools to display the bill of rights and allow children the right to pray in school. | Passed | 780,567 (82.8%) | 162,631 (17.2%) |
November 2012 general election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 3 | Judicial Appointment Amendment. Would change the selection of supreme court judges from a nonpartisan process to one that would give the governor more discretion and control over a selecting commission. | Failed | 608,458 (24%) | 1,929,470 (76%) |
| Proposition A | Municipal Police Amendment. Would effectively transfer the control over the St. Louis police force from the state government to the city. | Passed | 1,617,443 (63.9%) | 914,143 (36.1%) |
| Proposition B | Tobacco Tax Initiative. Introduces a tax on tobacco products to fund tobacco prevention services in education institutions. | Failed | 1,321,586 (49.2%) | 1,362,005 (50.8%) |
| Proposition E | Health Care Exchange Question. Would prohibit the governor from establishing any state-operated health insurance exchange without approval from the legislature or an amendment. | Passed | 1,573,292 (61.7%) | 976,250 (38.3%) |

### 2014

August 2014 primary election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 1 | Right-to-Farm Amendment. Would guarantee farmers and ranchers a right to farm and produce food for others. | Passed | 499,963 (50.12%) | 497,588 (49.88%) |
| Amendment 5 | Right to Bear Arms Amendment. Would provide citizens the 'unalienable' right to keep and bear arms; also restricted rights of convicted felons and the mentally ill to own firearms and removed a restriction on concealed carry. | Passed | 602,863 (60.95%) | 386,308 (39.05%) |
| Amendment 7 | Temporary Sales Tax Increase for Transportation Amendment. Would impose a 0.75% sales and use tax increase for a maximum of ten years to fund transportation projects. | Failed | 408,288 (40.82%) | 591,932 (59.18%) |
| Amendment 8 | Veterans Lottery Ticket Amendment. Would allow the creation of a new lottery ticket to specifically fund veterans' programs. | Failed | 441,520 (45.01%) | 539,519 (54.99%) |
| Amendment 9 | Electronic Data Protection Amendment. Would protect personal electronic communication and data from unreasonable searches and seizures. | Passed | 729,752 (74.75%) | 246,515 (25.25%) |
November 2014 general election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 2 | Evidence in Sexual Crimes Against Minors Amendment. Would allow evidence of prior criminal acts to be admissible in prosecutions for sexual crimes involving a victim under the age of eighteen. | Passed | 1,018,773 (71.98%) | 396,519 (28.02%) |
| Amendment 3 | Teacher Performance Evaluation. Would implement teacher performance evaluations to determine their employment status. | Failed | 339,422 (23.57%) | 1,100,628 (76.43%) |
| Amendment 6 | Early Voting Period Amendment. Would establish a six day long early voting period. | Failed | 416,447 (29.70%) | 985,966 (70.30%) |
| Amendment 10 | Gubernatorial Budgetary Recommendations Amendment. Would restrict the governor's power to use and estimate public funds in the budget. | Passed | 791,099 (56.80%) | 601,699 (42.20%) |

### 2016

November 2016 general election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 1 | Sales Tax for Parks and Conservation Measure. Would renew for 10 years a 1984 state amendment which prescribes a 0.1% sales and use tax in order to fund state parks and conservation projects. | Passed | 2,187,773 (79.88%) | 551,117 (20.12%) |
| Amendment 2 | State and Judicial Campaign Contribution Limits Initiative. Would establish various limits on political campaign contributions. Later partially ruled unconstitutional in federal court. | Passed | 1,894,870 (69.95%) | 814,016 (30.05%) |
| Amendment 3 | 60 Cent Cigarette Tax Amendment. Would increase taxes on cigarettes by 60 cents per pack by 2020. | Failed | 1,120,389 (40.45%) | 1,649,723 (59.55%) |
| Amendment 4 | Prohibition on Extending Sales Tax to Previously Untaxed Services Amendment. Would prohibit new sales/use taxes on any service not subject to a sales/use tax before 2015. | Passed | 1,533,909 (56.98%) | 1,158,291 (43.02%) |
| Amendment 6 | Voter ID Requirement Amendment. Would requiem the presentation of voter IDs when voting in elections. | Passed | 1,712,274 (63.01%) | 1,005,234 (36.99%) |
| Proposition A | 23 Cent Cigarette Tax Initiative. Would increases taxes on cigarettes by 23 cents per pack by 2021. | Failed | 1,223,251 (44.81%) | 1,506,644 (55.19%) |

### 2018

August 2018 primary election :
| Proposal | Description | Result | Yes votes | No votes |
| Proposition A | Senate Bill 19, which would enact a right-to-work law | Failed | 453,283 (32.53%) | 939,973 (67.47%) |
November 2018 general election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 1 | Lobbying, Campaign Finance, and Redistricting Initiative. Would introduce reforms to campaign finance laws for political candidates, lobbying laws, and change the legislative redistricting process. | Passed | 1,469,093 (62.02%) | 899,613 (37.98%) |
| Amendment 2 | Medical Marijuana and Veteran Healthcare Services Initiative. Would legalize marijuana for medical purposes, tax sales at 4 percent, and redistribute revenue to healthcare services, job training, housing assistance, and other services for veterans | Passed | 1,583,227 (65.59%) | 830,631 (34.41%) |
| Amendment 3 | Medical Marijuana and Biomedical Research and Drug Development Institute Initiative. Would legalize marijuana for medical purposes, tax sales at 15 percent, and redistribute revenue to the creation of a Biomedical Research and Drug Development Institute | Failed | 754,007 (31.50%) | 1,639,622 (68.50%) |
| Amendment 4 | Management and Advertisement of Bingo Games Amendment. For organizations, would repeal constitutional ban on advertising bingo games and reduce the time someone has to be a member before managing a bingo game. | Passed | 1,194,304 (52.39%) | 1,085,158 (47.61%) |
| Proposition B | $12 Minimum Wage Initiative. Would annually increase the minimum wage until reaching $12 in 2023. | Passed | 1,499,002 (62.34%) | 905,647 (37.66%) |
| Proposition C | Medical Marijuana and Veterans Healthcare Services, Education, Drug Treatment, and Public Safety Initiative. Would legalize marijuana for medical purposes, tax sales at 2 percent, and spend revenue on the above services. | Failed | 1,039,251 (43.57%) | 1,345,762 (56.43%) |
| Proposition D | Gas Tax Increase, Olympic Prize Exemption, and Traffic Reduction Fund Measure. Would incrementally increase the gas tax from 17 to 27 cents, and exempt prizes from the Olympics from state taxes. | Failed | 1,109,009 (46.40%) | 1,281,143 (53.60%) |

## 2020s
### 2020

August 2020 primary election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 2 | Medicaid Expansion Initiative. Would amend the state constitution to expand Medicaid eligibility under the Patient Protection and Affordable Care Act. | Passed | 672,967 (53.25%) | 590,809 (46.75%) |
November 2020 general election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 1 | State Executive Term Limits Amendment. Would limit the governor, lieutenant governor, secretary of state, state treasurer, state auditor, and attorney general to two terms of office. | Failed | 1,363,767 (47.16%) | 1,527,782 (52.84%) |
| Amendment 3 | Redistricting Process and Criteria, Lobbying, and Campaign Finance Amendment. Would replace the nonpartisan demographer with a bipartisan commission appointed by the governor for legislative redistricting and repeals many provisions of Amendment 1 passed in 2018. | Passed | 1,489,503 (51.01%) | 1,430,358 (48.99%) |

### 2022

November 2022 general election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 1 | State Treasurer Investment Authority Amendment. Would allow the state treasurer to invest state funds in securities. | Failed | 896,279 (45.68%) | 1,065,773 (54.32%) |
| Amendment 3 | Marijuana Legalization Initiative. Would legalize recreational marijuana use for adults over 21 and enact a 6 percent tax on its sale. | Passed | 1,092,432 (53.10%) | 965,020 (46.90%) |
| Amendment 4 | Allow Legislature to Require a City to Increase Funding without State Reimbursement for a Police Force Established by State Board Amendment. Would allow the legislature to increase the minimum funding for a police force. | Passed | 1,269,826 (63.19%) | 739,783 (36.81%) |
| Amendment 5 | Department of the National Guard Amendment. Would provide the state's national guard with an executive department separate from the Department of Public Safety. | Passed | 1,197,677 (60.22%) | 791,231 (39.78%) |
| Question | Missouri Constitutional Convention Question. Would indicate support for calling a state constitutional convention. | Failed | 633,228 (32.25%) | 1,330,427 (67.75%) |

### 2024

August 2024 primary election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 1 | Exempt Childcare Facility Property Taxes Amendment. Would exempt childcare facilities from property taxes. | Failed | 491,161 (45.28%) | 593,465 (54.72%) |
| Amendment 4 | Increase Police Funding Amendment. Would increase the minimum funding for the Kansas City police department. | Passed | 549,919 (51.13%) | 525,657 (48.87%) |
November 2024 general election :
| Proposal | Description | Result | Yes votes | No votes |
| Amendment 2 | Sports Betting Initiative. Would legalize and regulate sports wagering for adults over 21, allow license fees and a 10% wagering tax, and allocate revenue towards education. | Passed | 1,478,652 (50.05%) | 1,475,691 (49.95%) |
| Amendment 3 | Right to Reproductive Freedom Initiative. Would legalize abortion before fetal viability. | Passed | 1,538,659 (51.60%) | 1,443,022 (48.40%) |
| Amendment 5 | Osage River Gambling Boat License Initiative. Would allow the Missouri Gaming Commission to issue one additional gambling boat license to operate on the Osage River. | Failed | 1,380,949 (47.54%) | 1,523,889 (52.46%) |
| Amendment 6 | Levying of Fees to Support Salaries of Law Enforcement Personnel Amendment. Would allow for the levying of taxes to fund the salaries of sheriffs and prosecutors. | Failed | 1,112,081 (39.39%) | 1,711,527 (60.61%) |
| Amendment 7 | Require Citizenship to Vote and Prohibit Ranked-Choice Voting Amendment. Would prohibit non-citizens from voting in state elections as well as any form of voting other than one based on single-vote plurality. | Passed | 1,966,852 (68.44%) | 906,851 (31.56%) |
| Proposition A | Minimum Wage and Earned Paid Sick Time Initiative. Would annually increase the minimum wage until reaching $15 in 2026 and require employers to provide one hour of paid sick leave for every 30 hours worked. | Passed | 1,693,064 (57.57%) | 1,247,658 (42.43%) |