80% national support ABC/Washington Post poll found medicinal marijuana http://abcnews.go.com supported ABC News Poll 81% think it should be legal for medical purposes polls show more than 80 percent of Americans support ABC/Washington Post poll as high as 81 percent found 81% think it should be legal for medical purposes over 80% 81 percent support eight out of 10 Americans support medical marijuana 81 percent ABC poll 81 percent of voters support medical marijuana public support polls 80% national support