The Rachel Maddow Show 12/18/15

Tempers flare as Sanders takes DNC to court on eve of debate

Rachel Maddow reports on the rapidly degrading relations within the Democratic Party as a technical error in a DNC database allowed a Bernie Sanders campaign worker to access Hillary Clinton campaign data, leading the DNC to lock the Sanders campaign out of its own data, resulting in a court action by the Sanders campaign. All on the eve of the third Democratic debate. ... more Duration: {{video.duration.momentjs}}