What did the Southern states find objectionable in Abraham 1860 campaign for president?

The Southern states' main objection to Abraham Lincoln's presidential campaign in 1860 was his opposition to the expansion of slavery into new territories. Lincoln believed that slavery was morally wrong and should not be allowed to spread, while many Southerners saw slavery as an important part of their economy and way of life. They feared that with Lincoln as president, their livelihoods would be threatened and the balance of power between the North and South would shift in favor of the North. This issue of slavery drove a major wedge between the two regions and ultimately led to the outbreak of the Civil War the following year.