Sen. Jim DeMint's endorsement has become the gold standard for true blue conservatives seeking a Senate seat. Alex Wong/Getty Images hide caption

itoggle caption Alex Wong/Getty Images

Comedian Stephen Colbert told his supporters to ask South Carolina Gov. Nikki Haley to name him to replace outgoing Sen. Jim DeMint. Scott Gries/Picturegroup hide caption

itoggle caption Scott Gries/Picturegroup