 This was a crucial moment for Joe Biden to try to reassure his party and reset his campaign. Whilst he didn't stumble or falter as badly as he did in that disastrous debate last week, he did not perform well enough to lay to rest fears about his fitness and mental acuity. The answer that has concerned Democrats the most was when he was asked by ABC presenter George Stephanopoulos how he would feel if he lost the election to Donald Trump. And if you stay in and Trump is elected and everything you're warning about comes to pass...