Rudolph W. Giuliani sprinted through october as if he were running for national office. He was, of course, campaigning for other Republican candidates--popping up, over a period of ten days, in eight cities. Wherever he went, Giuliani was the main attraction. The crowds didn't want to hear much about election 2006; they wanted to know if Rudy was planning to run for president in 2008. "I'll make the decision sometime next year," he announced in New Hampshire. Is the outcome in doubt? Giuliani is the closest thing in America to a mythic hero. His reputation was forged in the refiner's...