Republican presidential candidate and former Massachusetts Gov. Mitt Romney (center) is joined Jan. 6, 2012, at a campaign event in Conway, S.C., by South Carolina Gov. Nikki Haley (left) and wife Ann. (Associated Press)

Photo by: David Goldman

Republican presidential candidate and former Massachusetts Gov. Mitt Romney (center) is joined Jan. 6, 2012, at a campaign event in Conway, S.C., by South Carolina Gov. Nikki Haley (left) and wife Ann. (Associated Press)