A new Gallup poll shows 64 percent of Americans now think marijuana should be legal, the highest level since tracking began in 1969.
In 1969 when tracking began, 12 percent supported legalizing the drug, according to Gallup. The support doubled by the end of the next decade, but remained steady around 24 percent until the 2000s. Support increased precipitously in the next decade.
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Increased support for legalization coincides with the increased legality of marijuana throughout America in statewide ballot measures, according to Gallup. Eight states and the District of Columbia have fully legalized marijuana, meaning more than one in five Americans now live in a state where the drug is legal.
A majority of Americans have supported the legalization since 2013. The issue's public support follows a similar trajectory of same-sex marriage, which became legalized in 2015.
In respect to political affililiation, the majority of both Republicans and Democrats now support legalizing the drug.
Seventy-two percent of Democrats support legalizing marijuana at the federal level, and a majority have supported legalization since 2009. Fifty-one percent of Republicans support legalization, which is up nine percentage points from 2016.