On Friday, the first poll taken
Friday's results fell mostly along party lines - Democrats overwhelming approved of the announcement, while Republicans largely disapproved. Independents were split: 53% approved of Obama's endorsement of same-sex marriage, compared to 44% of independents who disapproved.
The poll also questioned Americans on whether they were more or less likely to vote for Obama based on the decision, though respondents were not asked whether they were previously leaning toward the president or his Republican rival Mitt Romney.
Forty percent of Americans said the decision will sway their vote in November. The survey indicated 26% of Americans were less likely to vote for the president because of the decision, and 13% were more likely to cast votes for Obama following his announcement.
Among Americans who identified themselves as independents, 23% said they were less likely to vote for Obama after he supported same-sex marriage, and 11% said they were more likely to cast ballots for the incumbent Democrat in November.
Sixty percent of Americans polled were unchanged in their support of the president after he publicly backed same-sex marriage.
The poll was taken by telephone from 1,013 adults on May 10. The sampling error was plus or minus 4 percentage points.