But the latest poll from PRRI shows a stunning jump: 63 percent of Americans said they support making marijuana legal. In the September poll, 31 percent of respondents said they “strongly” supported legalization. Just over one-third of Americans — 36 percent — now say they oppose legalization, with only 17 percent opposing “strongly.”

The 63 percent in the PRRI survey represents the highest level of support for marijuana legalization of any survey fielded this year, or indeed ever. An AP-NORC survey conducted in March found 61 percent support. Earlier this month, a Gallup poll showed 60 percent support.

Taken together, this year’s marijuana surveys suggest that Americans have grown even more bullish on the prospect of legal weed than they were in 2014, when the first retail pot shops opened in Colorado and Washington state and voters in Oregon, Alaska and Washington, D.C., opted to follow suit.