In May, 1863 New York’s Democrat Governor Horatio Seymour pointed out to his constituents “that New York’s [troop] quota was too high and draft districts that were Democratic in their voting habits were called upon to furnish higher ratios of their population than Republican areas.”
It is worth noting that New York Democrats, in addition to opposing Lincoln’s war, opposed political and social equality of Negro citizens; the 1865 Republican State Convention dodged the issue and did so once again in 1866. The long-established “Jim Crow” limitations of Negro voting rights continued unabated in the Empire State.
New Yorker Antagonism Toward the War
“The political opposition contended, from the first, that the war was unnecessary because they felt that differences between North and South could be and should be compromised. To them there was no other goal superior to the preservation of the Union, and they saw the war primarily as a result of a Republican power drive wherein that party had refused to give up its advantages to save the nation.
[New Yorkers] voted Democrats into power along with Seymour in the election of 1862 after having voted Republicans into office in 1858 and 1860. This was a real blow to the Republican administration both in Albany and in Washington and possibly could be interpreted as a repudiation of the party’s policies and actions.
New Yorker’s enthusiasm for “Mr. Lincoln’s War,” it appeared was not running very high in 1862, and they expressed themselves at the polls.
General George B. McClellan’s Peninsula campaign in Virginia collapsed in July 1862 and started the disillusionment. This military failure of the North was quickly followed by General Robert E. Lee’s defeat of General John Pope at [Second] Manassas in August.
Meanwhile, Democratic electioneering and political carping in the fall of 1862 pointed to the failure of Lincoln’s administration to win the war and excoriated his effort to make emancipation a war aim . . . which did not sit well with a great number of New Yorkers.
As a result, when Lincoln sent out another call for troops after [Sharpsburg], local boards in New York counties refused to cooperate in drafting, under State law, about 60,000 militia men for nine months duty. So disastrous was the response that Republican Governor Morgan and the Republican Secretary of War arranged for suspension of the call.
New Yorkers, evidently, were not inspired in the face of impending defeat and a new humanitarian goal of emancipation to rise to either cause. Passively, they avoided service in the armed forces.
In December , just before Christmas, General Burnside’s troops were decimated at Fredericksburg. The defeat produced a wail of despair in the North, and, as the new year of 1863 began, New Yorker’s antagonism to the war heightened.
In New York City a giant mid-May  mass meeting of 30,000 people was promoted by [Mayor] Fernando Wood’s Peace Democrats and held at Union Square. The language of the speakers was incendiary . . . [one] reminded “the George III of the present day [Lincoln] that he too may have his Cromwell or his Brutus . . .”
(New York State in the Civil War, Robert J. Rayback, New York History, New York State Historical Association, Volume XLII, No. 1, January 1961, excerpts pp. 64-66)