After one presidential defeat, two impeachments, two criminal indictments and, possibly, two more to come, Donald Trump has learned nothing. He still insists he won the 2020 election – by a landslide – and that he’s the victim of a vast deep-state conspiracy bent on his destruction.  

It’s hard to believe: A plainly delusional 77-year old is making a third run for the White House on an explicit platform of wreaking revenge on his political enemies. Yet somehow he’s outpacing his saner Republican rivals and, in some polls, is even with President Joe Biden.  

This is nuts, and it poses a riddle for Biden and the Democrats: Why aren’t they 20 points ahead? Why can’t they rally a solid majority of Americans to protect our constitutional democracy against an incendiary demagogue?