South Dakota Voters Passed Medical Pot, but Docs Hesitant Medical marijuana advocates have convinced South Dakota voters that legalizing the drug for medical use is a good idea, but they are struggling to do the same with many of the state’s physicians. A split between the state’s largest doctors’ association and medical pot proponents was evident May 25 at a meeting for a legislative committee tasked with studying the issue. The South Dakota State Medical Association was one of the most vocal opponents of the ballot measure last year. Though the law passed with 70% of the vote in November, the organization’s president, Dr. Benjamin Aaker, told lawmakers that many of its concerns with medical pot have remained.