In the United States, cannabis is legal in 38 of 50 states for medical use and 24 states for recreational use. At the federal level, cannabis is classified as a Schedule I drug under the Controlled Substances Act, determined to have a high potential for abuse and no accepted medical use, prohibiting its use for any purpose. Despite this prohibition, federal law is generally not enforced against the possession, cultivation, or intrastate distribution of cannabis in states where such activity has been legalized. Beginning in 2024, the Drug Enforcement Administration has initiated a review to potentially move cannabis to the less-restrictive Schedule III.
The legal history of cannabis in the United States began with state-level prohibition in the early 20th century, with the first major federal limitations occurring in 1937. Starting with Oregon in 1973, individual states began to liberalize cannabis laws through decriminalization. In 1996, California became the first state to legalize medical cannabis, sparking a trend that spread to a majority of states by 2016. In 2012, Washington and Colorado became the first states to legalize cannabis for recreational use.
Cannabis in South Dakota is legal for medical use as of July 1, 2021, having been legalized by a ballot initiative on November 3, 2020. Prior to then, cannabis was fully illegal, with South Dakota being the only U.S. state which outlawed ingestion of controlled substances. Testing positive for cannabis can be a misdemeanor offense. South Dakota would have become the first state in US history to legalize recreational and medical cannabis simultaneously, but an amendment legalizing recreational marijuana that was approved in the same election was struck down as unconstitutional the following February. The challenge claimed the amendment violated Amendment Z, the "Single-Subject Rule". The decision was appealed to the South Dakota Supreme Court, which upheld the lower court's decision on November 24, 2021.
Cannabis in Arkansas is illegal for recreational use. First-time possession of up to four ounces (110 g) is punished with a fine of up to $2,500, imprisonment of up to a year, and a mandatory six month driver's license suspension. Medical use was legalized in 2016 by way of a ballot measure to amend the state constitution.
Cannabis in North Dakota is legal for medical use but illegal for recreational use. Since 2019 however, possession under a 1/2 ounce has been decriminalized in the sense that there is no threat of jail time, though a criminal infraction fine up to $1,000 still applies. The cultivation of hemp is currently legal in North Dakota. In November 2018, the state's voters voted on recreational marijuana legalization, along with Michigan; the measure was rejected 59% to 41%. Two groups attempted to put marijuana legalization measures on the June 2020 Primary and the November 2020 elections, but were prevented from doing so by the COVID-19 pandemic.
North Dakota held two statewide elections in 2020: a primary election on Tuesday, June 9, and a general election on Tuesday, November 3. In addition, each township elected officers on Tuesday, March 17, and each school district held their elections on a date of their choosing between April 1 and June 30.
A general election in the state of Montana was held on Tuesday, November 3, 2020, with the primary elections being held on June 2, 2020. Voters will elect one member to United States House of Representatives and all five state constitutional offices, among other elected offices.
South Dakota Initiated Measure 26 was a 2020 voter initiative to legalize medical cannabis in the U.S. state of South Dakota. The initiative was certified by the South Dakota Secretary of State for the 2020 ballot on December 19, 2019. The sponsor of the initiative was New Approach South Dakota, a volunteer group headed by Melissa Mentele. The group had unsuccessfully tried to get an initiative on the 2018 ballot. Polling in September 2020 indicated 70% voter support for the initiative.
Montana I-190, the Montana Marijuana Legalization and Tax Initiative was a cannabis legalization initiative that appeared on the November 3, 2020 Montana general election ballot. Passing with 57% approval, the initiative legalized recreational marijuana in the state effective January 1, 2021. Along with Arizona, New Jersey and South Dakota, Montana was one of four states that legalized cannabis via ballot measures in the November 2020 election.
Arizona Proposition 207 was a voter initiative that appeared on the November 3, 2020, Arizona general election ballot to legalize cannabis for recreational use. Passing with 60% of the vote, the initiative legalized the possession of up to an ounce of cannabis, licensed sales at dispensaries, and personal cultivation of up to six plants. Along with Montana, New Jersey and South Dakota, Arizona is one of four states that legalized recreational marijuana via ballot measures in 2020.
Mississippi state elections in 2020 were held on Tuesday, November 3, 2020. Its primaries were held on March 10, 2020, with runoffs taking place on June 23.
New Jersey Public Question 1, the Constitutional Amendment To Legalize Marijuana, was a measure that appeared on the November 3, 2020 New Jersey general election ballot. Passing with the largest margin of victory of any statewide cannabis legalization ballot measure in US history, Question 1 legalized the possession and recreational use of cannabis; although planned to go into effect January 1, 2021, implementation was delayed until February 22 due to a dispute between the governor and legislature over penalties for underage cannabis users. Retail sales are also allowed under the amendment.
South Dakota Constitutional Amendment A, the Marijuana Legalization Initiative, was a cannabis legalization initiative that appeared on the November 3, 2020 South Dakota general election ballot. Passing with 54% of the vote, the measure would have legalized recreational marijuana in South Dakota effective July 1, 2021. Additionally, Amendment A required the South Dakota State Legislature to establish a medical marijuana program and legal hemp sales by April 1, 2022.
Missouri state elections were held on November 8, 2022, and the primary election were held on August 2, 2022.
The Regulate Marijuana Like Alcohol initiative, listed on the ballot as Issue 2, is a ballot initiative for legalization of cannabis in the U.S. state of Ohio that was passed by voters on November 7, 2023.
South Dakota Initiated Measure 27 was a 2022 voter initiative to legalize non-medical cannabis in the U.S. state of South Dakota. The initiative was certified by the South Dakota Secretary of State for the 2022 ballot on May 25, 2022. South Dakotans for Better Marijuana Laws (SDBML) organized the petition drive, and it was opposed by Protecting South Dakota Kids.
Question 4 was a voter referendum to amend the Constitution of Maryland in order to legalize cannabis for adult use in Maryland. The referendum was approved overwhelmingly, with more than twice as many voters voting in favor of it than against it and winning in all but one county, on November 8, 2022. It went into effect on July 1, 2023.
Florida Amendment 3, is a proposed constitutional amendment to the Florida Constitution subject to a direct voter referendum on November 5, 2024 that would legalize cannabis for possession, purchase, and recreational use in Florida for adults 21 years or older.
The following is a list of ballot measures, whether initiated by legislators or citizens, which have been certified to appear on various states' ballots during the 2024 United States elections as of 6 September 2024.
