Democratic presidential candidates issued a gusher of words over three hours Thursday night, but one they didn’t utter was “impeachment.” That was no accident. The polls show the cause is a political loser, and maybe someone should tell Jerrold Nadler.

The House Judiciary Chairman is still trying to persuade voters that he has Donald Trump in his impeachment sights. Russian collusion wasn’t real, obstruction of justice didn’t fly, and payments to Stormy Daniels sound too much like lying about sex (and Bill Clinton). So now...