(CNN) - Tea Party favorites have taken the lead in major South Carolina races. Republican gubernatorial candidate Nikki Haley and Republican Sen. Jim DeMint are ahead in a new Winthrop Poll of likely voters released Wednesday.
Haley leads Democratic state representative Vincent Sheheen by 9 percent, but 26 percent of Haley supporters and 18 percent of Sheehen supporters say they might change their minds before Election Day in November.
In the Senate race, DeMint leads Democratic nominee Alvin Greene with 58 percent to Greene's 11 percent among likely voters, but 30 percent of Democrats say they would support Greene in the general election.
Fifty percent of all individuals polled say they agree with the principles of the Tea Party, and 20 percent say they belonged to the Tea Party, compared with 30 percent of Republicans.
The South Carolina gubernatorial race received national attention during the primary when former Alaska Republican Gov. Sarah Palin endorsed the largely unknown Haley. She and Sheheen have since launched attack ads in the state.
For his part, DeMint has spent the election season voicing support for more conservative Republican candidates. Greene shocked the political world when he won the Democratic nomination for DeMint's seat after not campaigning for the seat. He was since indicted on obscenity charges.
The latest Winthrop Poll surveyed 741 likely voters over the phone from October 5-10. The results have a margin of error of plus or minus 3.6 percent.
–CNN Senior Political Editor Mark Preston contributed to this report