Video: Joe Biden Dropped Out. What’s Next?

President Biden on Sunday abruptly abandoned his campaign for a second term under intense pressure from fellow Democrats and threw his support to Vice President Kamala Harris to lead their party in a dramatic last-minute bid to stop former President Donald J. Trump from returning to the White House. Peter Baker, the chief White House correspondent for The New York Times, explains what happened as Mr. Biden decided to withdraw, and what could happen next.