LAS VEGAS, NV - FEBRUARY 20: Democratic presidential candidate Sen. Bernie Sanders (D-VT) and his wife, Jane O'Meara Sanders, (L) greet voters as they visit the Western High School caucus site on February 20, 2016 in Las Vegas, Nevada. Sanders and Hillary Clinton wait for the voters to weigh in as they head to the polls in the Democratic caucus. (Photo by Joe Raedle/Getty Images)
Getty Images

Getty Images News Joe Raedle