This special one-hour season finale is all about the midterms: before, during and after. In the run-up to election day, The Circus visits some of the high-profile campaigns to catch their final pushes. On election day, we're backstage and on set at The Late Show with Stephen Colbert, where John Heilemann and Alex Wagner are guests as the results are coming in. Then we cover the fallout of the historic election, from Trump's reaction to the surprising changes to the political landscape in Washington and beyond.