Haley Barbour Pictures

Republican presidential candidate Sen. John McCain (R-AZ) walks with Mississippi Gov. Haley Barbour (R-MS) at Hope Village for Children March 31, 2008 in Meridian, Mississippi. McCain spent time on Monday campaigning in Meridian, the hometown of McCain Field, named for his grandfather. Barbour has consistently been named as a top three possible pick for a McCain running mate but maintains he is still "on hurricane duty" in Mississippi. (Photo by Marianne Todd/Getty Images North America)