FILE - Voters fill out their ballots at a primary polling place, Feb. 29, 2020, in North Charleston, S.C. Democrats elevated South Carolina to the top of their presidential primary calendar, leapfrogging Iowa and New Hampshire. Republicans, meanwhile, could potentially have two homegrown South Carolina presidential candidates in the race, a prospect that has already caused friction among the state’s GOP circles of supporters. (AP Photo/Patrick Semansky, File) FILE - Voters fill out their ballots at a primary polling place, Feb. 29, 2020, in North Charleston, S.C. Democrats elevated South Carolina to the top of their presidential primary calendar, leapfrogging...