Democratic Presidential Candidates Clinton, Sanders and O'Malley arrive on stage

Democratic Presidential Candidates Clinton, Sanders and O'Malley arrive on stage

Democratic presidential candidates former Secretary of State Hillary Clinton (C), Sen. Bernie Sanders (R) and former Gov. Martin O'Malley (D-MD) arrive on stage during the Democratic presidential primary debate at the Gaillard Center in Charleston, South Carolina on January 17, 2016. Photo by Kevin Dietsch/UPI