How We Got to a Rematch

President Joe Biden has been the likely Democratic presidential nominee since he announced his decision to run for reelection. So why are Minnesota Rep. Dean Phillips and spiritual leader Marianne Williamson running against him? Has a challenger ever beaten an incumbent? Writer and political scientist Walter Shapiro joins CNN Political Director David Chalian to talk about historical similarities, and how quickly this election became a Trump vs. Biden rematch. Learn more about your ad choices. Visit podcastchoices.com/adchoices