May 15: Republican presidential hopefuls,
from left, Sen. John McCain, R-Ariz.; former New York City
Mayor Rudy Giuliani; former Arkansas Gov. Mike Huckabee; Rep.
Duncan Hunter, R-Calif.; Sen. Sam Brownback R-Kan.; former
secretary of Health and Human Services Tommy Thompson; former
Massachusetts Gov. Mitt Romney; former Virginia Gov. Jim Gilmore;
Rep. Tom Tancredo, R-Colo.; and Rep. Ron Paul, R-Texas; are
seen during the Republican debate at the University of South
Carolina's Koger Center for the Arts, in Columbia, S.C.