Considering that the immediate cause of the Civil War was the secession of Southern states in response to the election of Abraham Lincoln in 1860, it's pretty obvious that the Civil War would not have begun when it did if an Andrew Jackson-like candidate (maybe Douglas? or Andrew Johnson?) won in 1860. The real question is how long it would take Republicans to eventually win an election, and how long (and if) the South would liberalize on its own. The North was more electorally powerful than the South, so if they won within an election or two, then the Civil War may have just started an election or two later. If it took a generation or so, then prospects are better, because Southern society was getting more and more influence from Northern education at the time, although it's also possible that the South could have reacted to that trend by entrenching its position more.
Perhaps a perpetual Andrew Jackson would have prevented Civil War, but he may have prevented abolition as well.
Going to need this term, in this context, explained. Surely it bares zero connection to modern American liberalism, as that would be ridiculous.