William H. Seward, idol of the Republicans of the East, six months after Lincoln had made his "Divided House" speech, delivered an address at Rochester, New York, containing this famous sentence:
"It is an irrepressible conflict between opposing and enduring forces, and it means that the United States must, and will, sooner or later, become either entirely a slave-holding nation, or entirely a free-labor nation."
Seward, who had simply followed in Lincoln's steps, was defeated for the Presidential nomination at the Republican National Convention of 1860, because he was "too radical," and Lincoln, who was still "radicaler," was named.