Bloomberg takes center stage; rivals take aim

It's the ninth debate of the 2020 cycle, but it's a unique one. For the first time, former New York City Mayor Mike Bloomberg takes the stage - and he'll likely take heat from his rivals. Meanwhile, Senator Bernie Sanders is steadily building a commanding lead in the polls. Can the other contenders close the gap? CNN senior Washington correspondent Jeff Zeleny joins CNN political director David Chalian for a deep-dive on the fight for the Democratic nomination.To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices