Not really. Republicans may have had that as part of the platform, but too many Northerners were outraged at the thought of fighting a war over blacks/slavery for it to actually be important to all of them. I think abolitionists only made up ~10% of the (northern) population.
Perhaps in their wildest dreams. The abolitionist party reached its peak of around 300,000 in the late 1830s. Less than 2% of the total population.