1 of 5 | Sen. Lindsey Graham, R-S.C., speaks to the press at the U.S. Capitol in Washington, D.C., on March 3. Ten candidates are lined up to seek the Republican nomination to replace the late senator in November's election. File Photo by Bonnie Cash/UPI | License Photo

Aug. 10 (UPI) -- South Carolina Republicans are set to head to the polls Tuesday to select a nominee for November's election to replace the late Sen. Lindsey Graham.

Ten candidates are facing off in the special primary, which is open to any eligible voters who didn't vote in the Democratic primary in June. Polls were scheduled to be open from 7 a.m. to 7 p.m. EDT, WJCL-TV in Savannah, Ga., reported.

To receive the nomination, a candidate must receive at least 50% of the vote. If no candidate does, there will be a runoff Aug. 25 for the two candidates with the most votes.

The Washington Post reported that though none of the candidates is clearly aligned with President Donald Trump, he has attempted to rally support for Lindsey Graham's sister, Sen. Darline Graham, whom Gov. Henry McMaster appointed as the late senator's temporary replacement after his death last month. President Donald Trump urged McMaster to make the appointment and has also encouraged Darline Graham to run for the position permanently.