The Free Soil Party was a short-lived political party in the United States active in the 1848 and 1852 presidential elections, and in some state elections. Founded in Buffalo, New York, it was a third party and a single-issue party that largely appealed to and drew its greatest strength from New York State. The party leadership consisted of anti-slavery former members of the Whig Party and the Democratic Party. Its main purpose was to oppose the expansion of slavery into the western territories, arguing that free men on free soil comprised a morally and economically superior system to slavery. It opposed slavery in the new territories (agreeing with the Wilmot Proviso) and sometimes worked to remove existing laws that discriminated against freed African Americans in states such as Ohio.