Voters in five states will decide whether to legalize pot for adult recreational use on Election Day. With legal weed polling at record highs, this election could become America’s pot tipping point.

More than half of voters are for legalization in California and Nevada, while the other three states — Arizona, Maine and Massachusetts — are more split, according to the latest polls.

Eyes will be on California especially, which New Frontier Data estimates could have a $6.5 billion weed market by 2020.