It’s amazing that there haven’t been more Republicans like Mitt Romney who have said: “Enough is enough! I can go no further!”

The reason, I guess, is that the rot that has brought us to the brink of Senator Roy Moore began long ago. Starting with Sarah Palin and the spread of Fox News, the G.O.P. traded an ethos of excellence for an ethos of hucksterism.

The Republican Party I grew up with admired excellence. It admired intellectual excellence (Milton Friedman, William F. Buckley), moral excellence (John Paul II, Natan Sharansky) and excellent leaders (James Baker, Jeane Kirkpatrick). Populism abandoned all that — and had to by its very nature. Excellence is hierarchical. Excellence requires work, time, experience and talent. Populism doesn’t believe in hierarchy. Populism doesn’t demand the effort required to understand the best that has been thought and said. Populism celebrates the quick slogan, the impulsive slash, the easy ignorant assertion. Populism is blind to mastery and embraces mediocrity.