Fifth, America has never elected a candidate maximally extreme from the political center, the way Sanders and Cruz are. According to the FiveThirtyEight website, Cruz has the most conservative voting record in the entire Congress. That takes some doing.

Sixth, sooner or later the candidates from the governing wing of their parties will get their acts together. Marco Rubio has had a bad month, darkening his tone and trying to sound like a cut-rate version of Trump and Cruz.

Before too long Rubio will realize his first task is to rally the voters who detest or fear those men. That means running as an optimistic American nationalist with specific proposals to reform Washington and lift the working class.

If he can rally mainstream Republicans he’ll be at least tied with Trump and Cruz in the polls. Then he can counter their American decline narrative, with one of his own: This country is failing because it got too narcissistic, became too much like a reality TV show. Americans lost the ability to work constructively to get things done.