According to polling conducted by Public Policy Polling:
PPP's new South Carolina poll continues to find Donald Trump with a wide lead in the state. He's at 35 percent to 18 percent each for Ted Cruz and Marco Rubio, 10 percent for John Kasich, and 7 percent each for Jeb Bush and Ben Carson.
The race for second place is going to be close. But it's notable that Trump's performance, in which he blamed former President George W. Bush for 9/11, has not hurt his polling numbers in the Bush-friendly state.