Tonight on the Last Word: Four prosecutors withdraw after the Department of Justice steps in to overrule Roger Stone’s sentencing recommendation. Also, Sen. Richard Blumenthal calls for the resignation of Attorney General William Barr over the Roger Stone case. Plus, Gene Sperling and Jason Johnson talk to Lawrence about the results of the New Hampshire primary and what could happen if the delegates continue to be split among three or more candidates. And Lawrence discusses the unpredictability of the Democratic presidential race. Rep. Sean Patrick Maloney, Sherrilyn Ifill and Glenn Kirschner also join Lawrence O’Donnell.