The sociologist and New York Times columnist Tressie McMillan Cottom joins the hosts this week to discuss the role of celebrity in politics. Could Beyoncé and Taylor Swift, with their tens of millions of fans, sway the presidential election? And beyond brand-name pop stars, what role does celebrity play within the political system?Plus, Tressie goes a little “Dr. Oz” on us.(A full transcript of this audio essay will be available within 24 hours of publication in the audio player above.)Thoughts about the show? Email us at matterofopinion@nytimes.com or leave a voicemail at (212) 556-7440.