 NPR's Eric McDaniel has more. Senator Heinrich said that by passing the torch, Biden would secure his legacy as one of our nation's greatest leaders. Heinrich is one of four senators and more than 30 House Democrats to call for a change. But the president's campaign is continuing to insist publicly that Biden is the party's nominee and that he's not going anywhere. Campaign chair Jen O'Malley Dillon told MSNBC's Morning Joe that Biden is in this race to win.