Slavery was ended as a by-product of Lincoln's election. Lincoln likely would have been like the previous presidents, in allowing slavery to continue as long as nobody did anything drastic (like secede from the Union). But the South didn't really give Lincoln a chance and instead chose to secede as soon as they could. Lincoln saw the opportunity in this and decided that he could end slavery once and for all with a quick decisive military campaign lasting about 4-6 months...and as we all know, things didn't go exactly according to plan. haha