AdvertisementAnalysisNPR/PBS NewsHour/Marist Poll: Biden, Sanders Lead 2020 Democratic RaceDecember 16, 2019Domenico MontanarofacebookEmailFormer Vice President Joe Biden (left) and Sen. Bernie Sanders lead the crowded Democratic presidential primary field, according to the latest NPR/PBS NewsHour/Marist Poll. Above, they appear during the Democratic presidential primary debate in Atlanta on Nov. 20. (Getty Images)