Voters in Alaska, Oregon and the District approved marijuana legalization measures by comfortable margins on Tuesday. The votes signal that Americans are ready to expand upon the legalization experiments already ongoing in Colorado and Washington state, which opened up recreational marijuana markets this year. A medical marijuana amendment also received majority support in Florida, but it fell two percentage points short of the 60 percent supermajority required for passage.

The victories are significant because they come despite a midterm election holding huge structural advantages for Republicans. Support for marijuana reform is concentrated among the young, but 18 to 29-year-olds made up only 13 percent of the 2014 electorate, compared to 19 percent in 2012.

Read more: It’s official: Marijuana has gone mainstream | Washington Post