Voters in California, Massachusetts and Nevada approved recreational marijuana initiatives Tuesday night, and several other states passed medical marijuana provisions, in what is turning out to be the biggest electoral victory for marijuana reform since 2012, when Colorado and Washington first approved the drug's recreational use.

In addition to the states above, local outlets in Maine are declaring victory for that state's legalization measure, but with 91 percent of precincts reporting just a few thousand votes separate the "Yes" and "No" columns.

A similar legalization measure in Arizona did not gain sufficient support to pass, with 52 percent of voters rejecting it.

On the medical side, voters in Florida, North Dakota and Arkansas have approved medical marijuana initiatives. Voters in in Montana also rolled back restrictions on an existing medical pot law, the Washington Post reports.