Origins of the American Civil War
In almost every northern state, organizers attempted to have a Republican Party or an anti-Nebraska fusion movement on ballots in 1854. In areas where the radical Republicans controlled the new organization, the comprehensive radical program became the party policy. Just as they helped organize the Republican Party in the summer of 1854, the radicals played an important role in the national organization of the party in 1856. Republican conventions in New York, Massachusetts, and Illinois adopted radical platforms. These radical platforms in such states as Wisconsin, Michigan, Maine, and Vermont usually called for the divorce of the government from slavery, the repeal of the Fugitive Slave Laws, and no more slave states, as did platforms in Pennsylvania, Minnesota, and Massachusetts when radical influence was high.
History of the United States Republican Party
The Republican Party began as a coalition of anti-slavery Conscience Whigs such as Zachariah Chandler and Free Soil Democrats such as Salmon P. Chase, who were opposed to the Kansas–Nebraska Act, submitted to Congress by Stephen Douglas in January 1854. The Act opened Kansas Territory and Nebraska Territory to slavery and future admission as slave states, thus implicitly repealing the prohibition on slavery in territory north of 36° 30′ latitude, which had been part of the Missouri Compromise. This change was viewed by Free Soil and abolitionist Northerners as an aggressive, expansionist maneuver by the slave-owning South.