Cooper Union Address

The Cooper Union speech or address, known at the time as the Cooper Institute speech, was delivered by Abraham Lincoln on February 27, 1860, at Cooper Union, in New York City. Lincoln was not yet the Republican nominee for the presidency, as the convention was scheduled for May. It is considered one of his most important speeches. Some historians have argued that the speech was responsible for his victory in the presidential election later that year.

In the speech, Lincoln elaborated his views on slavery by affirming that he did not wish it to be expanded into the western territories and claiming that the Founding Fathers would agree with this position. The journalist Robert J. McNamara wrote, "Lincoln's Cooper Union speech was one of his longest, at more than 7,000 words. And it is not one of his speeches with passages that are often quoted. Yet, due to the careful research and Lincoln's forceful argument, it was stunningly effective."

Horace Greeley's New York Tribune hailed it as "one of the most happiest and most convincing political arguments ever made in this City. ... No man ever made such an impression on his first appeal to a New-York audience."

Lincoln's speech has three major parts, each building towards his conclusion. The first part concerns the founders and the legal positions they supported on the question of slavery in the territories. The second part is addressed to the voters of the southern states by clarifying the issues between Republicans and Democrats. He rebukes claims made by the Democrats that they are "conservative", arguing instead that the Republicans' position on slavery is in fact the "conservative" policy, as Lincoln claims it coincides with the views of the American founding fathers, who he said opposed slavery. By supporting slavery, Lincoln claims that the Democrats are in opposition to the teachings of the founding fathers and "reject, and scout, and spit upon that old policy, and insist upon substituting something new." The final section is addressed to Republicans.

In the first section, in response to a statement by Illinois Democrat Stephen A. Douglas, Lincoln asks rhetorically, "What is the frame of government under which we live?" He answers that it "must be: 'The Constitution of the United States.'" From there, he begins his reasoning on why the federal government can regulate slavery in the federal territories (but not states), especially resting on the character of the founders, and how they thought of slavery:

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