Tonight on the Last Word: The New York Times and the Washington Post report that Russia is meddling to re-elect Trump. Also, Roger Stone is sentenced to more than 3 years in prison for obstructing the Russia investigation. Plus, Maria Teresa Kumar and Jason Johnson talk to Lawrence about the record viewership for last night’s Democratic debate. And presidential candidate Sen. Elizabeth Warren discusses her performance at the debate and reacts to reports that Russia is interfering in the 2020 election. Rep. Jim Himes, Ned Price and Glenn Kirschner also join Lawrence O’Donnell.