Poll: Clinton, Sanders close in Iowa
The latest NBC poll shows Hillary Clinton leading Bernie Sanders in Iowa by three points -- within the margin of error. Is Sanders ready to go negative? Top Sanders strategist Tad Devine and New York mayor Bill Deblasio discuss with Chris Matthews.
New 'Clinton Affair' explores Lewinsky scandal10:56
Listen: Mueller's new boss should recuse, according to himself05:03
Pipe bomb suspect went to Trump rallies & threatened Dems online13:42
Congressman Lieu destroys Trump over email and iPhone hypocrisy04:10
With a chance to unite, Trump turns to the politics of division05:12
Trump ditches unity message, blames rivals for political toxicity09:58