(CNN) - As political newcomer Alvin Greene calls on South Carolina's Democratic establishment to get behind him, party leaders are calling for an investigation into his surprise win in the state's Democratic Senate primary.
Greene, 32, is an unemployed veteran who came out of nowhere to win last week's election. Despite running no ads, Greene toppled former state legislator Vic Rawl with almost 60 percent of the vote. He'll face Republican Sen. Jim DeMint in the general election.
South Carolina Rep. James Clyburn said Sunday that he has no plans to get behind Greene and repeated his suspicions that the Democratic nominee is "someone's plant."
"I know a Democratic pattern. I know a Republican pattern, and I saw in the Democratic primary elephant dung all over the place," Clyburn, the majority whip, said on CNN's "State of the Union."