A new South Carolina poll has Trump with a pretty big lead followed by Cruz in 2nd and Rubio not far behind him in 3rd:
Trump.........36.3
Cruz..........19.6
Rubio.........14.6
Bush..........10.9
Kasich.........8.7
Carson.........4.7
Undecided......5.2
The margin for error in the poll is +/- 3.5% and the poll was conducted on February 10-11. It included 779 likely Republican primary voters.
You can read more about the poll here.