Amid reports that President Joe Biden is weighing whether to stay in the race, the White House appeared to double down Wednesday. In a call with all staffers, Jeff Zients, the White House chief of staff, acknowledged to Biden’s circle he “didn’t have a great night,” but emphasized it was just one night — “and what we all know is he is a great president.” That’s according to Axios correspondent Alex Thompson, who shared details of the call on X. The Washington Post reported that Biden and Vice President Kamala Harris personally joined the call. Want more breaking political news? Click for the l…