The Liberty party held its convention at Aurora, Illinois in January 1844, with spin-off tours sweeping the State afterward. At a rally in Lake County the following month, free colored man William Jones accompanied the speakers to tell of being robbed and kidnapped in Chicago. “It soon became the custom for the abolition orators to take around with them on their campaigns former slaves, or free Negroes whom slaveholders’ agents had attempted kidnap. The stories of these Negroes never failed to be received with telling effect.”
The antislavery Liberty and Free Soil parties had a brief life during the 1848 election cycle, but became a political cipher until being absorbed into the new Republican party of 1854. They made two more patches of the myriad quilt of that new party, of which the radical abolitionists became the more vocal, and the leaders of the rush to war with Americans in the South. As described below, the Free Soil party platform was at odds with the United States Constitution, which delegated no power whatsoever to the federal agent to control labor relations within an existing State, or to inhibit free access and enjoyment of all territories belonging to all citizens of all States.
Had the Free Soil advocates sought peaceful and practical solutions to the colonial labor system inherited from the British and perpetuated by slave-produced cotton hungry New England mills, peaceful relations with the South might have prevailed.
A Radical Free Soil Party Formed in 1848
“The result of the August convention at Buffalo is well known. It was a complete victory for the Free Soil advocates. Van Buren was nominated for President, and Charles Francis Adams for Vice-President. A new antislavery organization, called the Free Soil party, was organized . . . with the approval of all the delegates – Barn-Burners, Conscience Whigs, and Libertymen alike.
The main points in this platform were: the declaration that the Federal Government must exert itself to abolish slavery everywhere within the constitutional limits of its power; the demand that Congress should prohibit slavery in all territory then free . . . “No more slaves – no more slave territory.” [The] Liberty party placed the names Van Buren and Adams [on their banner] . . . They are for a total divorce of the government from slavery, and [a new] antislavery administration. A new principle had been established – “Union without compromise – Fraternization.”
In the  State elections the Democrats were, as usual, victorious. The Democratic nominee, Governor French, was . . . elected without serious trouble. The period from 1849 to 1851 was a time of disintegration and depression in the Illinois antislavery forces. The Free Soil organizations . . . dissolved as soon as [the 1848 elections were] over.”
(Negro Servitude in Illinois, and of the Slavery Agitation in That State, 1719—1864, N. Dwight Harris, Haskell House Publishers, 1969 (original 1904), excerpts pp. 166-167; 174)