Those of you who caught my appearance just now on Morning Joe saw me trying to teach some history to Steve Kornacki, who apparently is ideologically indisposed to learning it. I pointed out that, contrary to the myth of the southern vote turning on the Civil Rights Act of 1964, Dwight D. Eisenhower, who was an active proponent of civil rights, in fact got a larger share of the southern vote than Barry Goldwater did. Kornacki said that my claim was untrue. Here is Sean Trende documenting the truth of it.

In 1964, Barry Goldwater won 49 percent of the vote in the South to Lyndon Johnson’s 52 percent. This doesn’t represent a massive breakthrough; in fact, Goldwater ran somewhat behind Eisenhower’s 1956 showing. He lost Texas, Virginia, Florida, and Tennessee, all four of which were won twice by Eisenhower and the last three of which were won by Nixon. He also lost North Carolina and Arkansas.

Steve Kornacki should acknowledge his error.