On the Fact that a Lot of Northern Abolitionists (William Lloyd Garrison, Wendell Phillips, and Lysander Spooner, to Name a Few) Had Actually Been Lobbying for NORTHERN Secession for Decades

And their reasoning was solid. If the North had seceded first, the Fugitive Slave Act would have no longer been seen as applicable and more slaves might have successfully escaped to the North. Granted, being that the North was a profoundly racist region in its own right, we're not entirely sure what would happened to these runaway slaves once they got here but at least some of them would have had a much better chance of reaching Canada prior to secession and that would have been a huge improvement.