Less than two months ago Obama led Romney in Florida by 7 points. Now he trails Romney by 6 points. What changed?

Politico's Byron Tau writes:

President Obama's same-sex marriage endorsement makes a full quarter of Florida voters less likely to cast their ballots for him, according to a poll released Monday.

Quinnipac's latest poll of the Sunshine State finds that 25 percent of voters say Obama's endorsement of gay marriage makes them less likely to vote for him. On the other hand, 11 percent say that it makes them more likely to vote for him.

... On the whole, Romney beats President Obama by six points in Florida, leading 47 to 41 percent over the incumbent president.