Democratic U.S. presidential candidate former Governor Martin O’Malley speaks at the NBC News – YouTube Democratic presidential candidates debate in Charleston, South Carolina in this January 17, 2016 file photo. Former Maryland Governor Martin O’Malley, who had trouble gaining any traction in the Democratic race, planned to suspend his campaign at 9:30 p.m. CST (0330 GMT), according to a Democrat with knowledge of his plans. O’Malley was in third place with 0.5 percent. REUTERS/Randall Hill/Files