Tuesday's election results show voters in California, Massachusetts and Nevada approved recreational marijuana initiatives. 

In addition, Maine's legalization measure could pass, as only a few thousand votes separate the yes and no votes. Right now, it's too close to call.

52% of Arizona voters, rejected that state's legalization measure.

Meanwhile, voters in Florida, North Dakota and Arkansas, passed medical marijuana measures. Rolled back restrictions on an existing medical pot law, were passed by voters in Montana.

Tom Angell, of the marijuana reform group, Marijuana Majority, had this to say in an email. “What Colorado and other states have already done is generating revenue, creating jobs and reducing crime, so it’s not surprising that voters in more places are eager to end prohibition.”