As President Joe Biden flies back to Delaware from Las Vegas on Wednesday night, cutting his trip short after testing positive for Covid-19, he faces one of the most momentous decisions of his long political life: Should he heed the rising calls from his fellow Democrats to extinguish his bid for reelection? For Biden, is it a new moment? Even though anger and panic have been steadily rising inside the Democratic Party for nearly three weeks, after the president's alarming debate performance in Atlanta, the White House and the Biden campaign are in a new place, multiple Democratic officials told CNN. "He's gone from saying, Kamala can't win,' to Do you think Kamala can win? " the adviser said. "It's still unclear where he's going to land but seems to be listening.