UPDATE: The Associated Press has called the race for former South Carolina Gov. Mark Sanford (R). Read more here.
ORIGINAL POST: Former South Carolina Gov. Mark Sanford (R) leads Democrat Elizabeth Colbert Busch by 54 to 45 percent with more than half of precincts reporting. The race may soon be called.
Stay tuned as more results pour in...
--This post was originally published at 8:08 p.m. and last updated at 9:00 p.m.