WASHINGTON (AP) — Former president Barack Obama has privately expressed concerns to Democrats about President Joe Biden’s candidacy, and Speaker Emerita Nancy Pelosi privately warned Biden that Democrats could lose the ability to seize control in the House if he didn’t step away from the race. [time-brightcove not-tgx=”true”] Pelosi also showed Biden polling that he likely can’t defeat Republican Donald Trump, according to people familiar with the matter who insisted on anonymity to discuss it. Time racing, Democrats at the highest levels are making a critical push for Biden to reconsider his reelection bid, as unease grows at the White House and within the campaign at a fraught moment for the president and his party. [video id=eX1ZR0hF autostart="viewable"] Biden has insisted he is not backing down, adamant that he is the candidate who beat Republican Donald Trump before and will do it again this year.