As expected, Stephen Colbert's older sister Elizabeth won the Democratic nomination in the race for South Carolina's first congressional seat on Tuesday night. Pending the results of a GOP runoff, she's darn close to being the first Colbert in Congress. It won't be an easy race, though.

Colbert Busch had little trouble beating her challenger Ben Frasier for the Democratic nomination, and her chances are strong in the general election. The College of Charleston graduate has led a very different professional life than her comedian brother. As the director of business development at an old naval shipyard and a staffer at Clemson University, she's become a fixture in the local community and has built her campaign on bringing new jobs to the area. Stephen's been supportive. Though he rarely appears out of character in public, Colbert's been putting on his serious face to support his sister's campaign. "I'm willing to, you know, break the jewel of my own creation to try to do something for her," he told CNN's Jake Tapper on Monday

The leading Republican candidate is none other than Mark "I'm Hiking the Appalachian Trail" Sanford, the former governor of South Carolina. You know Sanford from the 2009 scandal that involved the rising GOP star to disappearing for a week, telling his staff he was hiking the AT and later revealing that he was hanging out with his mistress in Argentina. Sanford's made a helluva comeback, though, and is now leading in the polls. The Hill describes his approach as "a hard-fought journey to redeem his name, running a political campaign that has been equal parts apology tour and fiscally conservative crusade." Sanford finished ahead of the pack in the Republican primary on Tuesday and must now perform in a two-week-long runoff for the nomination.

The road to Washington is a long one and Colbert Busch still has a little ways to go. But she's closer. And ahead of the primary, Stephen Colbert let it be known that he's not only willing to stump for his big sister straight-faced on the campaign trail. He'll do it on national TV too. "As a broadcast journalist I am obligated to maintain objectivity," the Comedy Central host said on his show last week. "It doesn't matter that my sister is intelligent, hardworking, compassionate and dedicated to the people of South Carolina."