Donald Trump still is leading the S.C. Republican presidential race after the weekend’s explosive GOP debate in Greenville. But the race for second place in Saturday’s primary appears to be narrowing. Behind Trump, who has 35 percent support in the poll, U.S. Sens. Marco Rubio of Florida and Ted Cruz of Texas are tied for second place — at 18 percent each, according to a Public Policy Polling survey released exclusively Monday to The State. Ohio Gov. John Kasich is in forth at 10 percent support, followed by former Florida Gov. Jeb Bush and retired neurosurgeon Ben Carson, tied with...