Some Democrats and opposed the spread of slavery but the leaders of both parties refused to take a stand because they did not want to lose any southern votes and feared that the slavery issue would the nation. The openly denounced the institution of slavery, demanding that the federal government abolish slavery in all federal districts and territories. During the election of 1848, was the first time became an important election issue.

Many abolitionists felt frustrated by the lack of action from political leaders on the issue of slavery. They believed that the moral imperative to end slavery should override political concerns about losing votes. Despite this, the major political parties continued to prioritize their own electoral success over taking a firm stance on the abolition of slavery.

The election of 1848 marked a turning point in the debate about slavery in American politics. The issue became more prominent and divided the nation along regional lines. The Free Soil Party, which was the first political party to openly oppose the spread of slavery, gained traction as more Americans became disillusioned with the major parties' reluctance to address the issue.

Ultimately, the election of 1848 did not result in a significant change in policy regarding slavery. However, it set the stage for the growing tensions between the North and the South that would eventually lead to the Civil War. The refusal of political leaders to take a strong stance on slavery demonstrated the extent to which party politics and fear of losing votes could hinder progress on crucial moral issues.