CLEMSON, SC - FEBRUARY 19, 2016: Republican presidential candidate Marco Rubio, left, South Carolina Governor Nikki Haley, and Sen. Tim Scott, R-S.C. greet the crowd at a campaign rally at Clemson University Friday, February 19, 2016 in Clemson, South Carolina. The South Carolina Republican primary will be held Saturday, February 20. (Photo by Sean Rayford/Getty Images)