The following is a list of statewide initiatives and referendums modifying state law and proposing state constitutional amendments in Montana, sorted by election.
1900–1919
1900 Measure NameDescriptionStatusYes votesNo votesAmendment 1A constitutional amendment permitting district court judges to sit on the Montana Supreme Court when a Supreme Court justice is disqualified.7,689 (70.19%)3,265 (29.81%)
1902 Measure NameDescriptionStatusYes votesNo votesAmendment 1A constitutional amendment setting a term limit of 6 years for county commissioners.11,126 (56.34%)8,622 (43.66%)
1904 Measure NameDescriptionStatusYes votesNo votesAmendment 1A constitutional amendment providing for an 8-hour workday in mills, smelters, mines, and government employment.28,631 (88.44%)3,742 (11.56%)Amendment 2A constitutional amendment prohibiting the employment of children under the age of 16 in underground mines.29,237 (92.43%)2,394 (7.57%)
1906 Measure NameDescriptionStatusYes votesNo votesAmendment 1A constitutional amendment establishing the initiative and referendum process.36,374 (84.61%)6,616 (15.39%)
1908 Measure NameDescriptionStatusYes votesNo votesAmendment 1A constitutional amendment creating a state depository board.29,273 (73.22%)10,653 (26.68%)Amendment 2A constitutional amendment increasing the tax levy to 3 mills.14,184 (35.56%)25,706 (64.44%)Referendum 1A measure creating a state bond for higher education.24,809 (65.77%)12,910 (34.23%)
1910 Measure NameDescriptionStatusYes votesNo votesAmendment 1A constitutional amendment increasing the tax levy to 2.5 mills.34,481 (65.85%)17,883 (34.15%)
1912 Measure NameDescriptionStatusYes votesNo votesReferendum 1A measure allowing the issuance of a $533,000 bond to buy property for a mental health facility.34,235 (52.92%)30,461 (47.08%)IR 300-301A referendum organizing a state militia.21,195 (33.67%)41,749 (66.33%)I 302-303An initiative providing for party nomination by direct vote.46,473 (78.30%)12,879 (21.70%)I 304-305An initiative limiting campaign spending for public office candidates.44,337 (76.47%)13,645 (23.53%)I 306-307An initiative instructing the state legislature to vote for US Senators based on referendums instead of by party.45,620 (78.57%)12,442 (21.43%)I 308-309An initiative providing for direct presidential preference primaries.46,241 (79.20%)12,144 (20.80%)
1914 Measure NameDescriptionStatusYes votesNo votesAmendment 1A constitutional amendment granting women the right to vote and hold office.41,302 (52.35%)37,588 (47.65%)Referendum 1A measure creating a levy to support educational institutions.28,703 (38.29%)46,265 (61.71%)IR-6A referendum establishing an athletic commission to regulate boxing and sparring.34,440 (44.72%)42,581 (55.28%)I-7An initiative providing compensation to injured workers in certain industries and imposing penalties for violations of safety regulations.36,979 (45.51%)44,275 (54.49%)I-8An initiative providing for the investment of state educational, charitable, and penal institution funds.45,132 (61.91%)27,780 (38.09%)I-9An initiative consolidating state higher education institutions into the University of Montana.30,465 (39.68%)46,311 (60.32%)
1916 Measure NameDescriptionStatusYes votesNo votesAmendment 1A constitutional amendment creating boards of equalization for the state and each county to adjust and equalize the valuation of taxable property.74,257 (54.97%)60,839 (45.03%)Amendment 2A constitutional amendment exempting governmental and nonprofit organizations from taxation.48,656 (36.90%)83,198 (63.10%)Referendum 1A measure issuing a bond for the establishment of a twine factory in the state prison.68,059 (46.23%)79,158 (53.77%)R-10A measure prohibiting the manufacture and sale of alcohol.102,776 (58.18%)73,890 (41.82%)I-11A measure establishing an athletics commission.72,162 (48.54%)76,510 (51.46%)
1918 Measure NameDescriptionStatusYes votesNo votesAmendment 1A constitutional amendment exempting mortgages from taxation.55,296 (64.37%)30,614 (35.63%)Referendum 1A measure issuing $250,000 in bonds for a terminal grain elevator.54,215 (64.66%)29,630 (35.34%)I-12A measure regulating the practice of chiropractors.46,302 (54.08%)39,320 (45.92%)
1980–1999
1980 Measure NameDescriptionStatusYes votesNo votesC-9A constitutional amendment allowing exceptions to the confidentiality of the documents of the Judicial Standards Commission, which investigates misconduct by judges.181,140 (58.33%)129,394 (41.67%)I-84An initiative prohibiting the disposal of radioactive waste in Montana.172,909 (50.06%)172,493 (49.94%)I-85An initiative requiring public disclosure of money spent on lobbying public officials.259,698 (77.28%)76,358 (22.72%)I-86An initiative changing the income tax structure to prevent tax increases based solely on inflation.233,497 (69.47%)102,635 (30.53%)I-87An initiative providing for the establishment of a voluntary recycling program and prohibiting the sale of non-refillable glass and plastic bottles.100,761 (28.81%)248,928 (71.19%)
1982 Measure NameDescriptionStatusYes votesNo votesC-10A constitutional amendment removing the restriction on investing public funds in corporate capital stock.128,607 (45.63%)153,264 (54.37%)C-11A constitutional amendment providing that the legislature meet annually for 60 days in odd-numbered years and 45 days in even numbered years.118,980 (41.00%)171,196 (59.00%)C-12A constitutional amendment allowing a poll of legislators to be conducted by mail in order to override the governor's veto when the legislature is not in session.147,463 (52.85%)131,560 (47.15%)LR-89A measure repealing the prohibition on the disposal of radioactive waste in Montana.70,375 (24.05%)222,210 (75.95%)I-91An initiative expressing opposition to the placement of missiles in Montana.168,594 (57.41%)125,092 (42.59%)I-92An initiative expanding authorized gambling and creating a state gaming commission to regulate gambling.115,297 (37.60%)191,334 (62.40%)I-94An initiative abolishing the quota system for beer and wine licenses and allowing businesses with sufficient equipment to sell meals to apply for a license to sell beer and wine.125,092 (39.85%)168,594 (60.15%)I-95An initiative providing that 25% of all future deposits to the permanent coal tax trust fund be invested in the Montana's economy.83,813 (25.38%)246,368 (74.62%)
1984 Measure NameDescriptionStatusYes votesNo votesC-13A constitutional amendment allowing the Supreme Court to discipline a judge or justice for violations of judicial ethics.287,926 (80.84%)68,251 (19.16%)C-14A constitutional amendment requiring the redistricting of congressional districts within 90 days of the census.214,956 (66.19%)109,813 (33.81%)I-96An initiative abolishing the state board of milk control and eliminating price controls and certain regulations on the sale of milk.145,342 (39.54%)222,200 (60.46%)I-97An initiative permitting the state licensing of denturists.194,285 (53.12%)171,448 (46.88%)
1986 Measure NameDescriptionStatusYes votesNo votesC-15A constitutional amendment removing the legal drinking age of 19 from the Montana Constitution and allowing the legislature or the voters to establish a legal drinking age.207,233 (66.03%)106,611 (33.97%)C-16A constitutional amendment repealing the requirement that a salary commission recommend compensation for elected officials.172,517 (59.76%)116,143 (40.24%)CI-27A constitutional amendment abolishing property taxes and requiring voter approval for the imposition of a sales tax or an increase in the income or sales tax.140,090 (44.18%)177,016 (55.82%)CI-30A constitutional amendment authorizing the legislature to determine the rights and remedies for injury or damage.175,502 (56.22%)136,653 (43.78%)LR-100A measure establishing a state lottery.216,706 (68.98%)97,459 (31.02%)I-104An initiative prohibiting the state from controlling the price of milk.153,293 (48.80%)160,835 (51.20%)I-105An initiative limiting property taxes to the amounts levied in 1986.166,694 (54.91%)136,904 (45.09%)
1988 Measure NameDescriptionStatusYes votesNo votesC-17A constitutional amendment removing certain restrictions on the investment of public funds.122,854 (36.09%)217,536 (63.91%)C-18A constitutional amendment allowing the legislature greater discretion in providing economic assistance and social services.182,037 (52.45%)165,056 (47.55%)C-19A constitutional amendment allowing the legislature to establish residency requirements for judges.224,937 (65.88%)116,500 (34.12%)C-20A constitutional amendment requiring the legislature to meet annually for no more than 100 days in 2 years.169,491 (48.66%)178,855 (51.34%)LR-106A measure authorizing the legislature to continue a 6-mill property tax levy to fund the Montana University System for 10 years.227,638 (64.14%)127,259 (35.86%)I-110An initiative repealing the requirement that occupants of motor vehicles wear a seatbelt.155,481 (42.41%)211,090 (57.59%)I-113An initiative establishing a system of refundable deposits on beverage containers.78,509 (21.45%)287,461 (78.55%)
1990 Measure NameDescriptionStatusYes votesNo votesCC-1A measure calling for a constitutional convention.53,630 (17.96%)245,009 (82.04%)C-21A constitutional amendment requiring a valid election to be held on qualified ballot issues.166,143 (56.20%)129,477 (43.80%)CI-55A constitutional amendment repealing existing taxes and requiring state funding to come from a trade charge.78,254 (25.16%)232,807 (74.84%)I-115An initiative increasing the sales tax on cigarettes to $0.43 per pack and to 25% for other tobacco products.130,707 (40.92%)188,732 (59.08%)
1992
June 1992 Measure NameDescriptionStatusYes votesNo votesLR-109A measure imposing a property tax levy of 2 mills to fund vocational and technical education programs.76,546 (36.38%)133,841 (63.62%)LR-110A measure creating the Treasure State Endowment Fund to provide local governments coal severance tax trust fund interest for infrastructure projects.132,820 (62.54%)79,562 (37.46%)
November 1992 Measure NameDescriptionStatusYes votesNo votesC-22A constitutional amendment changing how state judges and justices are elected.279,894 (74.40%)96,313 (25.60%)C-23A constitutional amendment allowing the state to transfer public lands to a local government at less than full market value.176,082 (46.15%)205,485 (53.85%)C-24A constitutional amendment increasing the membership of the board to regents from 7 to 8 members and requiring at least one of the board members to be Native American.105,475 (27.21%)282,172 (72.79%)CI-63A constitutional amendment requiring coal severance taxes to be placed into a special fund for the next 10 years and allowing the legislature to appropriate the fund's principal for financing the costs of local government facilities and improvements.165,126 (42.94%)219,403 (57.06%)CI-64A constitutional amendment prohibiting certain public officials from seeking reelection if they have already held office for a certain number of years.264,174 (66.90%)130,695 (33.10%)
1993 Measure NameDescriptionStatusYes votesNo votesLR-111A measure imposing a 4% sales tax and reducing income and property taxes.78,349 (25.53%)228,587 (74.47%)
1994