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Mark Sanford's Affair Follows Him On Campaign Trail For South Carolina House Seat

Melissa Block talks to University of South Carolina political scientist Mark Tompkins about Republican Mark Sanford and Democrat Elizabeth Colbert Busch, who are running for Congress in the state. Sanford is a former governor who said he was hiking the Appalachian Trail in 2009 when he was actually having an extramarital affair in Argentina. Colbert Busch is the sister of late-night comedian, Stephen Colbert.