Maddow's 'black box worry' among Trump's dirty tricks to subvert the election

Rachel Maddow describes one of Donald Trump's dirty tricks to disrupt the administration of the midterm elections and intimidate election officials at the most important and high-pressure time of their job. Carol Leonnig, MS NOW senior investigative reporter, talks with Rachel about an even greater concern that could disrupt the chain of possession of uncounted votes and leave the outcome a confused mess.