Clyburn: Something wrong in the Democratic primary

Congressman James Clyburn appeared on CNN's State of the Union on Sunday.

South Carolina congressman Jim Clyburn says he knew something was wrong in the Democratic primary for a U.S. Senate seat, which was won by an unemployed political unknown.

The Democratic congressman said Sunday on CNN's "State of the Union" that he saw odd tactics with his own primary challenger. He says he discovered a Republican congressman's campaign manager was running the campaign for Clyburn's opponent.

He said: "I know a Democratic pattern, I know a Republican pattern, and I saw in the Democratic primary elephant dung all over the place."

Clyburn says he does not see himself supporting Greene, and says he believes Greene was planted in the race by someone.

Clyburn has called for an investigation in to the primary won by Alvin Greene, a 32-year-old military veteran who faces a felony charge