text:  Biden used a teleprompter. He did not respond to shouted questions about his poor debate performance last week, which has ignited calls for him to bow out of the race. And before those remarks, aides told anxious donors that Biden's campaign saw a surge of donations after the debate. Andrew Desiderio is a senior congressional reporter for Punchbowl News, and he's following developments in this story. Andrew, welcome. Thanks for having me.