Some reasons the Lincoln-Douglas debates were important:
The debates were important because it became a debate about the high profile issue of slavery. It also gave Abraham Lincoln press coverage that helped him and the fairly new Republican Party.
Stephen A. Douglas debated Lincoln in a famous series of debates in 1858. They were campaigning for the office of US Senator from Illinois. The debates attracted national attention and were published in the newspapers in the East as well as the Midwest.
In 1858, the Republican Party was still a very new entity. It was formed in the early 1850's from the break up of the Whig Party. The slavery issues split the Democratic Party and destroyed the Whig Party. In Illinois, the rallying cry of Illinois Republicans centered on two national evils. They were called the "Two Despotisms-Catholicism and Slavery. While slavery was an issue in the Lincoln-Douglas debates in 1858, little in those debates centered around Catholicism.
Certainly the 1858 Lincoln-Douglas debates for the US senate seat of Senator Douglas of Illinois highlighted the differences between Republicans and Democrats on the slavery issue. It can be said, as well, that Lincoln's ideas reflected a growing messianic sentiment on the part of Lincoln. Lincoln's well known "House divided" speech invoked the words of Jesus Christ. Lincoln also made it clear in 1858 that slavery was not only a political issue but was a religious issue as well.
The word 'debate' is both a verb (debate, debates, debating, debated) and a noun (debate, debates).
Abraham Lincoln won the 1858 Republican Party nomination for senator for Illinois.
JOHN BROWN'S RAID ! - apex
1858
1858
Ottawa, Illinois
Abraham Lincoln wanted to run for the Senate so that he could make laws to stop slavery in America.
Stephen Douglas
poopydoopy
The Lincoln and Douglas debates in 1858, were extensively covered by newspapers in both the North and the South. Northerners followed the debates and by doing so, brought to national attention the views of Abraham Lincoln. Abolitionists in the North were impressed with Abraham Lincoln's views on slavery.
Abraham Lincoln.
In 1858, in time for the Senatorial elections in Illinois.
Both were running and wanted the same senate seat in Illinois so they set up debates with each other
That's what the debates were about - was slavery protected by the Constitution? If so, how could the new states vote to be free soil?