Cannabis in South Dakota

As part of a larger trend nationwide to restrict cannabis, South Dakota banned the drug in 1931.[10]

In 1977, during a short-lived wave of decriminalization in the country, South Dakota decriminalized cannabis, but repealed that law "almost immediately" afterward.[11]

Ballot initiatives to legalize medical marijuana appeared on the 2006 and 2010 election ballots in South Dakota, but failed both times. The 2006 initiative lost 52%-47%, while the 2010 initiative lost 63%-36%.[12][13] Cannabis activist Emmett Reistroffer commented that the decrease of support in 2010 was due in part to the rise of the Tea Party movement and the presence of an anti-cigarette smoking bill on the same ballot.[14]

In mid-2015, there was an effort to place yet another ballot initiative on the 2016 election to legalize medical marijuana, but unlike in 2006 and 2010, the Marijuana Policy Project did not anticipate financially supporting the initiative due to strong cannabis campaigns in other states requiring attention for that election.[15]

In mid-2015, South Dakotans Against Prohibition (SDAP) began circulating petitions to put decriminalization of marijuana on the November 2016 ballot, reclassifying possession of 1 ounce (28 g) or less a civil, rather than criminal, infraction, and remove penalties for paraphernalia and consumption.[16] However, SDAP failed to gather the 13,871 signatures necessary to place an initiated measure on the ballot[17] and stated it would withdraw its petition.[18]

In November 2017, activists turned in over 15,000 signatures, narrowly meeting valid signature requirements, in order to place medical cannabis on the 2018 ballot.[19] The initiative failed to make the ballot due to an insufficient number of valid signatures. [20]

South Dakota Initiated Measure 26 was certified by the South Dakota Secretary of State for the 2020 ballot on December 19, 2019.[21]

A vote on South Dakota Constitutional Amendment A was also held in 2020, which would have legalized the use of recreational marijuana in South Dakota.[22]

Both measures, coming in effect on July 1, 2021, were passed by voters with a 69.9% margin in favor for Initiated Measure 26 and 54.2% for Constitutional Amendment A, respectively. South Dakota therefore would have become the first state to go from a prohibition state to a legalization state, leapfrogging their way around many obstacles that other states go through to legalize cannabis.[23]

However, on February 8, 2021, a judge ruled in favor of a lawsuit that argued Amendment A was unconstitutional due to violating the state's single-subject rule for ballot measures. This prevented the legalization of recreational marijuana in South Dakota from going into effect, pending a higher court's decision.[24] The case was subsequently appealed to the South Dakota Supreme Court, and the defendants submitted their initial arguments on March 10, 2021.[25]

On November 24, 2021, the South Dakota Supreme Court ruled 4-1 that the Amendment A was unconstitutional, striking down recreational legalization. This decision was reached because of the state's rule requiring proposed constitutional amendments to be single-subject only.[26]

In May 2022, pro-legalization activists in South Dakota collected and submitted enough signatures to put legalization on the November ballot (South Dakota Initiated Measure 27). The group South Dakotans for Better Marijuana Laws (SDBML) organized the petition drive.[27] In the November 2022 election, the initiative was rejected with 52.92% voting no.[28]