COLUMBIA (WACH) " Senator Jim DeMint has a comfortable lead over political newcomer Alvin Greene in the latest poll.
The Rasmussen Reports survey of likely voters found DeMint had 58 percent of the vote and Greene with 21 percent.
Nine percent support some other candidate, and 13 percent are undecided.
DeMint easily won the Republican primary over little-known former Democrat Susan Gaddy in his quest toward a second six-year Senate term.
Greene stunned South Carolina Democratic Party leaders by defeating former judge and legislator Vic Rawl of Charleston in last Tuesday's primary.
Greene raised no money in the contest, had no signs and no website.
Vic Rawl, the former state lawmaker who lost South Carolina's U.S. Senate Democratic primary to Greene is protesting the election results.
South Carolina Democratic Party Executive Director Jay Parmley says Vic Rawl filed a protest just before the noon deadline Monday.
Rawl says experts who have analyzed the data say they've noticed irregularities in the vote totals.
House Majority Whip Jim Clyburn says he thinks someone put Greene up as a shell candidate to embarrass the Democratic Party. But Greene insists he saved for two years to pay the $10,000 filing fee.
The survey of 500 likely voters in South Carolina was conducted on June 10. The margin of sampling error is +/- 4.5 percentage points.
Losing SC Senate candidate protesting results - Monday, June 14, 2010
The former state lawmaker who lost South Carolina's U.S. Senate Democratic primary to an unknown, unemployed military veteran is protesting the election results.
Watchdogs plan FEC complaint vs SC Senate nominee - Monday, June 14, 2010
A government watchdog group is preparing a Federal Election Commission complaint against the surprise winner in the South Carolina Democratic primary for U.S. Senate.
Clyburn: Something wrong in the Democratic primary - Sunday, June 13, 2010
Congressman Jim Clyburn says he knew something was wrong in the Democratic primary for a U.S. Senate seat when Alvin Greene won.
Alvin Greene may have some support - Saturday, June 12, 2010
Hours after winning South Carolina's Democratic nomination for U.S. Senate, many in Greene's own party pressured him to step aside. But one man is tired of the Greene bashing.
Conspiracy theories no surprise in Senate race - Friday, June 11, 2010
South Carolina is known for its sordid history of dirty politics. It's no wonder conspiracy theories abound about the unemployed military veteran who won the Democratic U.S. Senate nomination.
SC lawmakers: Greene not fit for Senate race - Thursday, June 10, 2010
Two of the state's top Democrats met with the surprise candidate for the U.S. Senate seat Thursday at ETV to find out if he's a legitimate candidate.
Greene accuser speaks out about porn incident - Thursday, June 10, 2010
Surprise Democratic U.S. Senate nominee Alvin Greene's accuser is speaking out about the felony charges alleging he showed obscene Internet photos to a USC student in November.
Clyburn wants feds to probe Greene's candidacy - Thursday, June 10, 2010
House Majority Whip Jim Clyburn said Thursday that he thinks a coordinated effort is behind Alvin Greene's shocking primary night victory over a former state lawmaker.
RAW VIDEO - Interviews with Greene, Rutherford and Sellers - Thursday, June 10, 2010
AP: Surprise Senate candidate refuses to withdraw - Wednesday, June 09, 2010
After learning of pending charges against nominee Alvin Greene for showing obscene Internet photos to a USC student, state Democratic Party Chair Carol Fowler asked Greene to step down from the race.
Unemployed vet wins Senate Dem nomination in SC - Wednesday, June 09, 2010
An unemployed military veteran has won the nomination to challenge Republican U.S. Sen. Jim DeMint.