Voters in 20 U.S. states could potentially legalize some form of cannabis use in the November 2016 election — part of a historic backlash to the century-old war on marijuana.

According to Ballotpedia, the encyclopedia of American politics, activists have submitted ballot measures for public vote in: Arizona, Arkansas, California, Florida, Georgia, Idaho, Maine, Massachusetts, Michigan, Mississippi, Missouri, Montana, New Mexico, North Dakota, Ohio, Oklahoma, South Dakota, Utah, Washington and Wyoming.

Gallup finds 58 percent of Americans support cannabis legalization for adults. States considered most likely to liberalize cannabis laws at the ballot include Nevada, California, Arizona, while midwestern and southern states are more of a long-shot. Other efforts are purely symbolic. Some states have multiple measures submitted, including anti-pot measures, for a total of 66 pot proposals this election. [Read more at the San Francisco Chronicle]