For the first time in the decades that Gallup has polled American opinions regarding marijuana legalization, it found that more American adults support marijuana legalization than oppose it. According to Gallup a record 50 percent of Americans think marijuana should be legalized, while only 46 percent think it should remain illegal. From Gallup:

1969-2011 Trend: Support for Making Use of Marijuana Legal

This is an historic moment for the marijuana legalization movement. Gallup is one of the most respected pollsters in the world, and this poll showing a majority in support of legalization will send an important signal to politicians, the media and Americans generally. Marijuana legalization as an issue is now fully mainstream, and the issue has now crossed an important psychological and political tipping point.

According to the poll, cannabis legalization is most popular among liberals and adults under 3o, while legalization is least popular with conservatives and people over the age of 65.

Support for Legalizing Use of Marijuana, by Subgroup, October 2011

This age gap is good news for marijuana legalization. It means the clear trend we have seen in the past few years of the American people steadily becoming more accepting of marijuana legalization should continue for the foreseeable future, as the older generation is gradually replaced by a young generation.