What explains Trump’s popularity

US President Trump’s disastrous mishandling of the coronavirus pandemic probably cost him re-election. Yet it seems mind-boggling that he still won more votes than any incumbent president in American history despite his dereliction of responsibility at a time of a once-in-a-century health crisis and economic devastation. Why are President-elect Joe Biden’s margins so thin in the states that clinched his victory? And why did the president’s down-ticket enablers flourish in the turbulent, plague-torn conditions they helped bring about? Democrats, struggling to make sense of it all, are locked in yet another round of mutual recrimination: They were either too progressive for swing voters — too...