Democratic presidential hopefuls Former Vice President Joe Biden (L) and California Senator Kamala Harris (R) speak while Vermont Senator Bernie Sanders walks by after the third Democratic primary debate of the 2020 presidential campaign season hosted by ABC News in partnership with Univision at Texas Southern University in Houston, Texas on September 12, 2019. (Photo by Robyn Beck / AFP) (Photo credit should read ROBYN BECK/AFP via Getty Images)
