The percentage is the highest level of support ever reported by the firm, which has polled Americans’ views regarding legalization since 1969.
Support is strongest among African Americans (71 percent), Democrats (69 percent), and Independents (65 percent). Support was weakest among Republicans (43 percent) and white evangelical Protestants (38 percent). However, among self-identified Republicans under 40 years of age, 62 percent favor legalization.
A Quinnipiac poll released on Thursday reports that 58 percent of voters nationwide back adult use legalization, and 91 percent believe that medical cannabis should be legal. That poll also reports that 70 percent of voters oppose federal interference in state marijuana policies.