Anderson Cooper 360

Democratic candidates make last pitches to New Hampshire voters; Candidates intensify attacks just hours before first NH voters; CNN Poll: Senator Sanders ahead in New Hampshire; President Trump repeatedly attacks Dem Senator Manchin for guilty votes; Manchin on President Trump's attacks "They're not unexpected;" "I think it is who he is;" Manchin: President Trump needs "to act like a responsible adult, and he's not;" AG Barr confirms Justice Department reviewing info Giuliani got in Ukraine; President Trump fires Lt. Col. Vindman, his twin brother and ambassador Sondland; A divided house via Knit