Oh, OK:
Republican Benjamin Burton was actually the largest slaveowner in Delaware.
Take it back.
books.google.com/books?id=bVMdA…
Anyone who ever took US history, even in high school, knows that in the antebellum era, Democrats were the party of slavery while abolitionism drove the GOP.
It's kind of a recurring theme when we teach the Civil War, you know?
He thinks if no Republicans had slaves, Democrats owned *every* slave -- ignoring the fact that there were other parties at the time.
Another fact he'd have known if he'd ever taken US history.