Mrs. Wiles told the Miami Herald she was "exhausted" and that it was time to move on.
"No question Mitt Romney is the best-organized Republican I've seen in a long time, but that's not the question," said Florida Republican campaign strategist Susie Wiles, a senior Romney adviser in the state. "The question is not whether he is organized. It is whether he can identify his supporters and get them to vote better than the Obama people. I wouldn't bet against him."