No city was more of a help to Abraham Lincoln and the Union war effort - or more of a hindrance. No city raised more men, money, and matériel for the war, and no city raised more hell against it. It was a city of patriots, war heroes, and abolitionists but simultaneously a city of antiwar protest, draft resistance, and sedition. Without his New York supporters, it's highly unlikely Lincoln would have made it to the White House.
"Read twice...post election antidote"