Americans' attitudes toward same-sex marriage are changing but not because of President Barack Obama's endorsement of the issue, according to a poll released by the Pew Forum on Religion and Public Life.
The poll of 2,973 Americans between June 28-July 9, 2012 found that while partisan divide on the issue "continues to widen," support for same-sex marriage continues to increase among most groups.
Pew attributed the increases in large part to "generational replacement—the arrival of younger, more supportive generations making up a larger share of the population—"rather than presidential support of the issue.
The poll found that Obama's endorsement of same-sex marriage earlier this year rallied Democratic support but little else.
"While President Obama’s endorsement of gay marriage earlier this year drew significant news coverage and public interest, its effect on public opinion has been limited," according to the Pew poll.
Opponents have forced the bill to a referendum vote in November.