Former New Jersey governor Chris Christie, Florida governor Ron DeSantis, former U.N. ambassador Nikki Haley & businessman Vivek Ramaswamy attacked each other during the final Republican primary debate before the Iowa caucuses. Former president Donald Trump, who has refused to take part in any of the debates, remains the party's frontrunner. This episode: political correspondent Sarah McCammon, political reporter Ximena Bustillo, and senior political editor & correspondent Domenico Montanaro.This episode was edited by Casey Morell. It was produced by Jeongyoon Han. Our executive producer is Muthoni Muturi.Unlock access to this and other bonus content by supporting The NPR Politics Podcast+. Sign up via Apple Podcasts or at plus.npr.org. Connect:Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Subscribe to the NPR Politics Newsletter.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy