It sounded like Joe Biden’s funeral on CNN last night. Immediately after the debate, I expected CNN’s panel of Democratic handmaidens to begin their usual contortions on how Biden is fit and spry. Instead, there seemed to be unanimous agreement: this is not the Joe Biden we know and love, not a man fit to take on Donald Trump and the rising specter of fascism, and there’s only one question that remains. In the words of their spiritual forebear, Vladimir Lenin: What Is To Be Done? It now seems likely that Biden is toast. We saw elite opinion shift and...