With five months until the election, things couldn’t look any worse for the president of the United States. His approval rating is down to 40%. People are getting tired of his antics and the insults he hurls at his opponents. The media is increasingly confident that, come November, the voters will elect a new chief executive.

This might sound like June 2020, but I’m actually referring to June 1948 — when President Harry Truman, a Democrat, was running to keep his job against Republican Thomas Dewey.