The Circus returns amid the critical midterm election season with voters across the nation energized in unprecedented ways by the Supreme Court's decision to overturn Roe v. Wade. John Heilemann goes behind the scenes with Vice President Kamala Harris as she campaigns for reproductive rights in a swing state that could determine control of the Senate. Jennifer Palmieri and Mark McKinnon are on the ground in Michigan to report on how the end of Roe is impacting one the nation's marquee gubernatorial races. (thetvdb.com)