And a narrow majority, 54 percent, said marijuana legalization would lead to more underage people trying it.
Marijuana legalization opponents, however, said the public isn't sold yet on legal pot.
Kevin Sabet, co-founder of Smart Approaches to Marijuana, which opposes pot legalization, pointed to the fact that 63 percent said it would bother them if people used marijuana openly in their neighborhood.
"Saying that we don't want people to serve prison time for marijuana is very different from saying I want a pot shop in my neighborhood selling cookies and candies and putting coupons in the paper," Sabet said.
The poll of 1,821 adults was conducted Feb. 14-23. The survey had a margin of error of plus or minus 2.6 percentage points.