As thunderbolts crash around him, Joe Biden is facing an urgent question: What exactly is the rationale for his presidential candidacy?
The answers given by Biden sympathizers usually are rooted in character and personal history. Here is a decent man who has lived long and seen a lot, through setbacks and tragedy, and knows enough to understand and defend the timeless virtues that are so absent but also so needed in modern Washington. Late in life, the man and moment are in harmony at last for a heroic final chapter.
The hope is that voters will embrace Biden as a kind of American Churchill.
The past 24 hours raise, not for the first time, a more painful possibility: Grampa Simpson is running for president.