Joe Biden has survived criticism of what some say is his overly tactile approach to younger women, but only after releasing a short video admitting: “I get it”

Joe Biden makes no bones about his pitch to Democrats for their support in his campaign to take on Donald Trump.

“We cannot, and I will not, let this man be re-elected president of the United States of America,” he told activists in New Hampshire at the weekend, underlining what polls consistently show: that he is the candidate with the best head-to-head chance against the Republican incumbent.

It has not been a good summer for the former vice-president, however, and his lead in the Democratic primary race feels vulnerable. Everyone knew he was gaffe-prone but the muddles and mistakes, as well as a lack of policy ambition and a critical look at his long record in the Senate, have raised a wider question among