The revenge tour

President Trump is on a revenge tour, firing administration officials who cooperated with the impeachment probe, using Twitter to rail against the prosecutions of his allies, and demanding to know why the Justice Department doesn't prosecute more of his enemies. Attorney General William Barr says he wants the president to back off and stop tweeting, but Barr has also been taking extraordinary interventions in criminal cases of interest to the president.

Then: Bernie Sanders won the New Hampshire primary but with the smallest vote share ever for a New Hampshire winner. Will the Democratic field ever winnow? Is there a real possibility of a contested convention? Is it Mike Bloomberg's fault? Are all the candidates being too nice to each other? Speaking of Bloomberg, he's soaring in the national polls on the back of an enormous television campaign, and speaking of being too nice, should we be seeing more attack ads? Erika Franklin Fowler of the Wesleyan Media Project talks about the power of those ads and whether they make a difference for voters.