Biden stepping aside as Democratic presidential candidate | CBC News U.S. President Joe Biden ended his re-election campaign on Sunday after fellow Democrats lost faith in his mental acuity and ability to beat Donald Trump, leaving the presidential race in uncharted territory. Biden, in a post on X, said he will remain in his role as president and commander-in-chief until his term ends in January 2025 and will address the nation this week. "It has been the greatest honor of my lif