Support for marijuana legalization among the American public has increased dramatically over the past year, according to Gallup. Their poll found that now 58 percent of Americans think marijuana should be legal, while only 39 percent think it should remain illegal. That is a ten point jump from only a year ago. From Gallup:

Americans' Views on Legalizing Marijuana

There does  continue to be a large generational divide. Support is highest among young adults (68 percent) but lowest among senior citizens (45 percent).

What has really driven the increase in support over the last year is the change in opinion among Independent voters. Last year only 50 percent of Independents supported legalization but this year it is now 62 percent.

It would seem the success of legalization ballot initiatives in Colorado and Washington triggered a real tipping point. It got people thinking about the issue and made the possibility of marijuana becoming legal very real. We have seen both a huge surge in support nationally and in state level polling.

It is no longer a question of if marijuana will be legalized in the United States, but only a question of when and how.