As President Joe Biden isolated at his beach house in Rehoboth, Delaware, on Thursday after testing positive for Covid, he faced renewed pressure from leading Democrats to drop out of the 2024 election contest against former President Donald Trump. Biden, who for weeks has flatly rejected calls to step aside and allow another nominee to take his place, is now said to be more open to listening to top Democrats about the risk of him remaining in the race. He has also reportedly asked advisers in recent days whether they believe his vice president, Kamala Harris, could beat Trump in November. "We're close to the end," a person close to Biden told NBC News. The pressure on the 81-year-old Biden stems from concerns that after