To debate - and REALLY mark your territory - you MUST possess a net DIFFERENCE.
I see no real difference apparent to warrant debate of any significance. Rudy's boat would capsize when it's pointed out, "Well, you stand for the SAME thing."
""Most of Clinton's policies are the same as most of mine." - Rudy Giuliani.
Bottom line in 2008:
We are going to have to pick a candidate who can protect this country from worldwide islamo fascist terror that desires to and has proven the will and capability to strike us on our streets and which will have access to nuclear weapons.
That candidate's ability to respect the rights of the states to legislate on social policies and his/her ability to nominate Supreme Court replacements (Stevens and Ginsburg at a minimum) who are not prone to re-writing the US Constitution as a "living document" ... is also at stake.
If you really can't see a difference between Giuliani- vs Rodham, Pretty Boys Edwards and Hussein Obama, then God Bless us all.