Stephen Colbert campaigns day before SC primary

Pictured: Stephen Colbert on "This Week" with George Stephanopoulos on January 15, 2012.

January 20, 2012 12:01:37 PM PST
Comedian Stephen Colbert, who says he's running for president of "The United States of South Carolina," is urging voters there to cast their ballots in Saturday's presidential primary for former GOP hopeful Herman Cain.