The Circus examines the battle for the Senate through the prism of two key states: Georgia and Ohio, where former President Trump's hand-picked candidates find themselves in tight races. Jennifer Palmieri and Mark McKinnon go behind-the-scenes in the Ohio showdown between Democratic Representative Tim Ryan and Republican JD Vance. John Heilemann and guest host Errin Haines head to Georgia, where Democratic Senator Raphael Warnock tries to stave off his Republican challenger, Herschel Walker, whose campaign has been mired in controversy. (thetvdb.com)