Now let me trace for a moment the sequence of events that led up to the secession crisis. Prelude to Southern Secession. I'll begin by saying that the decisive act of secession—the secession which caused all future secessions—was not what happened after Lincoln's election. It was the secession of the seven states of the Deep South from the Democratic convention in Charleston of 1860. As far as I know, Mr. DiLorenzo doesn't even know anything about this. He can still comment on that when he wants to.

The Real Abraham Lincoln: A Debate (2002)