538 had sporadic news in their live blog about individual state initiatives to legalize marijuana in 2016.
That led me to be curious: is there a full list of states where that topic was on the ballot this year?
I'm not sure whether or not this is the complete list, but this is what I came across:
Arizona, Massachusetts, Nevada, Maine, and California all had "Recreational Usage" bills on the ballot.
Arkansas, Florida, Montana, and North Dakota all had "Medicinal Usage" bills on the ballot.