Mitt Romney has an ad out today that goes after Newt Gingrich for something the former speaker of the House said . . . in May:
In May, on Meet the Press, Gingrich criticized Paul Ryan's plan to reform Medicare. "I don't think right-wing social engineering is any more desirable than left-wing social engineering," Gingrich said to host David Gregory. "I don't think imposing radical change from the right or the left is a very good way for a free society to operate. I think we need a national conversation to get to a better Medicare system with more choices for seniors."
Gingrich has since apologized to Ryan for his attack. Presumably Romney wants to make this an issue now because of Gingrich's recent surge in the polls.