But the key point which our Lost Causers always ignore is that in 1860, just as today, those "Deep Staters" were Democrats, not Republicans.
They were the economic, political and social allies of the great Southern Slave-Power, they voted with Southern Democrats, they supported Southern concerns even to the point of secession.
In New York they wanted to secede along with the Deep South.
Indeed, those Deep State Northern Democrats supported their Southern brethren until, until... until secessionists turned on them, renounced their debts, suspended payments and even withheld their exports -- "cotton diplomacy" they called it.
Suddenly secession hit Northern Democrats where it truly hurt and they began to see the wisdom of "preserving the Union".
But DiogenesLamp claims those Democrats "pulled Lincoln's strings", forcing him to "start war at Fort Sumter" and that part of his story is pure fantasy, worthy of a JK Rowling novel.

Yes, I think you are correct about Lincoln.
The proof is what happened on Good Friday, 1865 in Ford’s Theater.