(CNN) - CNN projects Elizabeth Colbert Busch, sister of comedian Stephen Colbert, will win Tuesday's Democratic primary for the the South Carolina special election to represent the state's 1st Congressional District.
The longtime area businesswoman was considered the favorite on the Democratic side over opponent Ben Frasier. She'll compete against the Republican nominee in the general election this May.
The winner of the special election will fill the U.S. House seat vacated by now-Sen. Tim Scott, a Republican appointed to fill the Senate spot that Jim DeMint left last month.
Her Republican opponent is not yet known. The Republican primary ballot featured 16 candidates, including former Gov. Mark Sanford and Teddy Turner, son of CNN founder Ted Turner. If no candidate surpasses the 50% mark, a runoff will take place between the top two contenders in the next two weeks.