(By msnbc's Tucker Carlson)Both Giuliani and McCain seem nervous. Rudy, who may be the most fluent, natural speaker running for president, stumbles over his words at least twice in his first answer. He speaks too fast, rushing to squeeze every imaginable talking point – 9-11, Reagan’s legacy, the rebirth of New York City – into a single paragraph, if not sentence. McCain follows his pace. He explodes out of the box like a sprinter, then trips almost immediately. Weirdly, it’s Romney who seems most relaxed. He may not know who he is, but he’s good on stage. Actually, maybe that’s why he’s good on stage.