 Since his disastrous debate performance 10 days ago, Joe Biden has been facing questions about whether he should step down from the presidential race. A handful of Democratic donors and congressmen want him to stand aside to allow another candidate to take on Donald Trump in November. But at a rally in the state of Wisconsin on Friday, he told supporters he was determined to fight on. I'm a nominee of the Democratic Party because millions of Democrats like you just voted for me in primaries all across America.