President Biden faces increasing dissent from within his own party, with some Democratic lawmakers calling for him to step down as the party's nominee following a poor debate performance. Key figures like Rep. Lloyd Doggett and Sen. Sheldon Whitehouse have expressed concerns about Biden's political strength and fitness for office. Former House Speaker Nancy Pelosi and Rep. Jim Clyburn acknowledged the legitimacy of these concerns but reaffirmed their support for Biden, urging him to demonstrate his abilities through tough interviews. A recent CNN poll shows Biden trailing behind former President Trump and other potential Democratic candidates like Kamala Harris and Pete Buttigieg. Despite the growing calls for his replacement, some experts, including historian Allan Lichtman, warn that replacing Biden could be disastrous for the Democratic Party.