 The list is a long one, and it includes op-ed writers, pundits, and organizations that like and support Joe Biden. But after last week's struggling debate performance by the president, even his biggest fans say it's time for a change on the Democratic ticket. The calls for him to withdraw from the race have appeared in articles and columns in The Atlantic, from Biden's biographer and some of his former White House staffers, and from the New York Times editorial board. So far, the president's campaign is resisting those calls.