Former Democratic rivals endorse Biden | DNC Night 4
Clip: Special | 5m 8s | Video has closed captioning.
Former 2020 Democratic presidential candidates -- including Sens. Amy Klobuchar, Elizabeth Warren, Cory Booker and Bernie Sanders; former Mayor Pete Buttigieg; former Texas Rep. Beto O'Rourke; and entrepreneur Andrew Yang -- spoke in support of Joe Biden on the final night of the Democratic National Convention.
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