Republican presidential hopefuls, from left, Rep. Tom Tancredo, R-Colo.; Rep. Ron Paul, R-Texas; former Arkansas Gov. Mike Huckabee; former New York City Mayor Rudy Giuliani; former Massachusetts Gov. Mitt Romney; Sen. John McCain, R-Ariz.; Sen. Sam Brownback R-Kan.; and Rep. Duncan Hunter, R-Calif. arrive on stage for a Republican presidential debate Wednesday, Sept. 5, 2007, on the University of New Hampshire campus in Durham, N.H. (AP Photo/Bill Sikes)