Voters have some big decisions to make when they cast their ballots by Nov. 3. A Joe Biden presidential victory could lead to the decriminalization of marijuana at the federal level, which would certainly be a big step forward for the industry though it would stop short of full federal legalization. In addition, Arizona, New Jersey, South Dakota, and Montana could be among the next states to legalize marijuana for recreational use as their voters decide whether to allow adult-use pot.