** FILE ** Disgraced former Gov. Mark Sanford, once poised to run as a Republican favorite in the race for South Carolina's vacant U.S. House seat, has hit some speed bumps on the campaign trail. (Associated Press)

** FILE ** Disgraced former Gov. Mark Sanford, once poised to run as a Republican favorite in the race for South Carolina's vacant U.S. House seat, has hit some speed bumps on the campaign trail. (Associated Press)