South Carolina Republican Nancy Mace, the first woman to graduate from The Citadel, and libertarian state Sen. Lee Bright are expected to announce challenges to incumbent Lindsey Graham in next year's Senate GOP primary, according to The State.
Businessman Richard Cash has already announced a run.
Mace posted on her website Thursday that she would make a special announcement at 9 a.m. Saturday at the Berkeley County GOP Breakfast.
Bright said Thursday that he plans to enter the South Carolina Senate race in the next few weeks, but was waiting to see if Reps. Trey Gowdy or Jeff Duncan would run. They have yet to make any announcements about a bid, The State reported.