US Senator Lindsey Graham, who oversaw the controversial process of confirming a Supreme Court justice weeks before the presidential vote, won reelection on Tuesday in South Carolina, a boost for Republicans seeking to maintain the Senate majority. Graham, an ally of President Donald Trump, survived a spirited challenge by Democrat Jaime Harrison, according to Fox News and The New York Times which called the race with nearly half the precincts reporting. The African-American Harrison had been running neck-and-neck with the 65-year-old Republican incumbent just weeks before the election in a conservative Southern bastion, and raised an all-time record in campaign donations as Democrats saw the seat as a potential pick-up. mlm/ec