I doubt Giuliani will even run, but that may be my own personal wishful thinking.
I don't think either of those clowns could win. They're only leading polls now because of their names, and that will change when the primary draws nearer and the candidates become more known as it always does. Polls now are trash, completly irrelevent in regards to the 2008 presidential election.
Giuliani has a good chance at the nomination because he will raise the most money.