By BILL BARROW and TOM BEAUMONT
President Donald Trump figures to be a factor in Republican elections in South Carolina, one of five states holding primaries.
Republican Gov. Henry McMaster has the president's backing but faces challenges from four other candidates. McMaster endorsed the New York businessman in the state's early presidential primary in 2016.
In another race in South Carolina, a frequent Trump critic, Republican congressman Mark Sanford, faces a challenge from state representative Katie Arrington in the state's southeastern coastal 1st District around Charleston. Sanford has described Trump as untrustworthy and culturally intolerant while his opponent has accused him of impeding Trump's agenda.
Primary elections are also scheduled Tuesday in Maine, Nevada, North Dakota and Virginia
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