In Ohio, Obama responded to a crowd booing at the mention of Romney's name by saying "No, no, no, Don't boo. Vote. Voting is the best revenge." Romney pounced. On that. With an ad and stump speech lamentations.

The new Romney ad features footage of Obama, and then a clip of Romney saying that people ought to vote because of "love of country," a theme he reiterated at a tarmac rally on a chilly Saturday morning.

"Yesterday, the president said something you may have heard by now that I think surprised a lot of people. Speaking to an audience he said, you know, voting is the best revenge. He told his supporters, voting for revenge. Vote for revenge? Let me tell you what I’d like to tell you: Vote for love of country," Romney said, and the crowd of more than 1,000 cheered. "It is time we lead America to a better place."