Stephen Colbert, host of Comedy Central's The Colbert Report, was in Charleston this weekend to campaign for his big sister in her quest to occupy the vacant seat in South Carolina's 1st Congressional District. 

The comedian said he "couldn't be happier" to help out. 

Democrat Elizabeth Colbert-Busch announced her canidacy in January for the seat left open by former representative Tim Scott when Governor Nikki Haley appointed him a state senator in lieu of former Senator Jim DeMint's resignation in December. 

The sibings covered their bases on Saruday, making an appearance at The Alley in the afternoon, followed by attending a dinner at Attorney Mark Tanenbaum's home on Sullivan's Island Saturday evening. 

Colbert-Busch is one of 18 candidates running for the open seat in Congress. She will oppose Ben Frasier in the Democratic primary election on March 19. If she wins, she will run in the special election, scheduled for May 7.

Colbert-Busch has said that she does not plan to appear on her brother's show in advance of the election.