Sanders, who had been uncommitted throughout the cycle, is a CNN political commentator and has worked with Priorities USA, the largest Democratic Party Super PAC. She was a major hire for Sanders during the 2016 campaign, coming just as he faced criticism over the lack of diversity on his staff. But in the summer of 2016, she quit the campaign, at the time saying she did so of her own volition.
Sanders is a prominent progressive voice and a regular presence on cable news, giving Biden a valuable addition to his team. But she hasn’t always been sympatico with the former vice president. Recently, Sanders chastised Biden for cracking jokes in response to the unwanted touching allegations leveled against him by several women with whom he’d interacted during his career.