On Thursday, Gallup released a poll showing that 44 percent of Americans have said they've tried marijuana, the largest number the survey has ever recorded. This isn't too far off from what other polls have found (this Pew Research Center poll pegged the number at 49 percent), and given that people are being asked to admit to behavior that is illegal in most places, the true number is almost certainly higher. So we're past the point where most American adults have tried pot, which helps explain why support for legalization has also become a majority position. In 2016, there will be multiple legalization initiatives on state ballots, which could help drive turnout for Democrats and make the election of Hillary Clinton more likely — even if she's not a legalization supporter herself.