Democratic Presidential Candidates Debate in Charleston, South Carolina

Democratic presidential candidates Martin OMalley (L) and Senator Bernie Sanders (I-VT) wait for Hillary Clinton to return to the stage following a break in the Democratic Candidates Debate hosted by NBC News and YouTube on January 17, 2016 in Charleston, South Carolina. This is the final debate for the Democratic candidates before the Iowa caucuses.
(Jan. 16, 2016 - Source: Andrew Burton/Getty Images North America)