Fifty-two percent of Americans say they would vote for a federal amendment legalizing same-sex marriage in all 50 states, compared to 43 percent who would vote against one.
Meanwhile, 54 percent of a half-sample of Americans say marriages should be recognized by the law as valid with the same rights as heterosexual marriages — about the same as the 53 percent who said so in May before the U.S. Supreme Court struck down a key section of the federal Defense of Marriage Act (DOMA), new numbers from Gallup said.
Among political groups, the federal law legalizing same-sex marriage in all 50 states enjoys broad support from self-identified liberals (77 percent) and Democrats (70 percent). Thirty percent of Republicans and 30 percent of conservatives would vote for such a law.
There is also a significant age gap; 69 percent of people between the ages of 18 and 34 would vote for one compared to 38 percent of people ages 55 years or older. A narrow majority — 52 percent of people 35 to 54 years old — would vote for it.
The overall survey of 2,027 adults was conducted from July 10-14 and has a margin of error of 3 percentage points.