Could Obama’s “new” same-sex marriage position cost him the election?

Today’s announcement was certainly welcome news, but it’s ushered in new speculation on the potential political fallout:

There’s already lots of chatter about how this might cost him the election or at least damage his chances in a few swing states, like North Carolina, which overwhelmingly passed an anti-gay marriage amendment yesterday.

Nation Senior Editor Richard Kim explains whether or not progressives should be worried.