The man is stupid, senile, and utterly bereft of principles, except for the 'principle' of self-promotion. (Good Catholic that he is, he reversed himself on the Hyde Amendment!) Kevin Williamson adds 'scoundrel' to the list of descriptors:
One of the worst features of our political life is the ugly and dishonest fights we have over Supreme Court nominations — a habit that can be laid squarely at the feet of Joe Biden, who along with Ted Kennedy, that pillar of human decency, organized one of the worst smear campaigns in modern American political history against Robert Bork, whose great crime against humanity was taking the “extremist” position that the Constitution actually says what it says rather than what anybody with power wishes it would say at any given moment, and that the way to amend the Constitution is to amend the Constitution rather than having nine wizards in black robes pull previously undiscovered constitutional mandates out of the penumbras upon which they sit all day. Don’t like the way Merrick Garland was treated? Mitch McConnell didn’t start that game — he is just better at it than his contemporary Democratic colleagues are. For lying partisan viciousness in the modern mode, Joe Biden is your man.
He is a liar, a corruptor of institutions, and a grifter of the first order.