User blog comment:Riley.Konner/Slavery in the constitution/@comment-32656-20120114085434/@comment-1310192-20120114191424

Not even then. The Civil War was also about states' rights than slavery, so would be it ATL; hell, New York and New Jersey were pro-slavery until 1800 or so, and there were 8 slavery states vs 5 free ones, with the free ones being isolated physically from each other. It's implausible for the slave states to lose a civil war back then.