DES MOINES, IOWA – JANUARY 14: Former Vice President Joe Biden (L) listens as Sen. Bernie Sanders (I-VT) makes a point during the Democratic presidential primary debate at Drake University on January 14, 2020 in Des Moines, Iowa. Six candidates out of the field qualified for the first Democratic presidential primary debate of 2020, hosted by CNN and the Des Moines Register. (Photo by Scott Olson/Getty Images)