Biden says ‘I’m not leaving’ as cracks appear in Democrats’ support

White House denies reports president is weighing whether his candidacy is viable or not with spate of interviews lined up

The White House insisted on Wednesday that Joe Biden is staying in the election as the presumptive Democratic nominee, while the US president reportedly told his campaign team I'm in this race to the end" amid mounting pressure for him to step down over concerns he is not up to the job, at 81.

Karine Jean-Pierre, the press secretary, told reporters the president is not dropping out", even while he owns" his dire performance in the first debate of the campaign against presumptive Republican nominee Donald Trump last week.