Emily Bazelon, John Dickerson and David Plotz discuss the latest Democratic presidential debate including Castro's dig into Biden, nationalized healthcare, and strategies for how to effectively pick a fight with President Trump.You can tweet suggestions, links, and questions to @SlateGabfest. Tweet us your cocktail chatter using #cocktailchatter or post it to our Facebook page. (Messages may be quoted by name unless the writer stipulates otherwise.) The email address for the Political Gabfest is [email protected]. (Email may be quoted by name unless the writer stipulates otherwise.)Research by Bridgette DunlapPodcast production by Jocelyn FrankLearn more about your ad choices. Visit megaphone.fm/adchoices