nprnews_____ = ||| lubuntu at wor2|||Rivals No More: Sanders, Warren Among Primary Candidates To Back Biden At DNC||| kickerpage = |||no kicker pagenpr for NPRNEWS||| summarynpr = |||Bernie Sanders, Elizabeth Warren and Cory Booker are among the former 2020 Democratic candidates who appear at the Democratic National Convention to project an image of unity heading into the general election. Follow live updates and analysis.