GREENVILLE, SC - FEBRUARY 21: Democratic presidential candidate Sen. Bernie Sanders (D-VT) waves after speaking during a Future to Believe In rally at the Bon Secours Wellness Arena on February 21, 2016 in Greenville, South Carolina. Sanders and Hillary Clinton continue to battle for the votes of primary voters as South Carolina holds their Democratic primary on February 27th. (Photo by Joe Raedle/Getty Images)
