In 2021, cities around the country are choosing mayors to try to lead them through a long list of challenges, both pre-existing and brought on by the COVID-19 pandemic. Last week, we began to explore the most high-profile of those mayoral contests -- the New York City Democratic primary. In this installment, we put that primary in context by looking more broadly at the relationship between urban centers and the Democratic Party. Learn more about your ad choices. Visit megaphone.fm/adchoices