52% Back Law to Legalize Gay Marriage in 50 States July 29, 2013 · Leave a Comment If given the opportunity to vote on a law legalizing gay marriage in all 50 states, the slight majority of Americans, 52%, say they would cast their vote in favor, while 43% would vote against it. [cont.] Lydia Saad, Gallup Share:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to email a link to a friend (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)MoreClick to print (Opens in new window)