Which candidate in the 1860 presidential election was known for being anti-slavery?

Abraham Lincoln was known for being anti-slavery in the context of the 1860 presidential election. His platform as a candidate for the Republican Party centered on stopping the spread of slavery into the territories of the United States, aligning with the party's foundation of opposing the extension of slavery. Lincoln's stance was significant because it appealed to a wide range of northerners who were increasingly opposed to slavery and its expansion. He believed that while existing slave states should retain their slaves, new states and territories should not be permitted to adopt slavery. This position ultimately contributed to Lincoln's election and catalyzed major national events, including the Civil War, as southern states viewed his election as a direct threat to the institution of slavery.