This is not a bit for his show. Stephen Colbert’s sister, Elizabeth Colbert-Busch, is expect to vie for the same South Carolina congressional seat sought by disgraced former governor Mark Sanford. Colbert-Busch is expected to file Tuesday to run for the Democratic Party in a special election. Though Stephen Colbert has launched two mock bids for president in the past, this will be Colbert-Busch’s first go at national office. In addition to a famous brother, Colbert-Bush has quite the backstory. Her father and two of her brothers were killed in a plane crash in 1974, she once married a man who ended up on America’s Most Wanted, and was sitting in a building across from the World Trade Center when the towers went down on 9/11. She can handle this.