USA HISTORY

Detailed explanation-1: -Lincoln-Douglas debates, series of seven debates between the Democratic senator Stephen A. Douglas and Republican challenger Abraham Lincoln during the 1858 Illinois senatorial campaign, largely concerning the issue of slavery extension into the territories.

Detailed explanation-2: -In the summer and the fall of 1858 two of the most influential statesmen of the late antebellum era, Stephen Douglas and Abraham Lincoln faced off in a series of debates focused on slavery as they vied for a United States Senate seat representing Illinois.

Detailed explanation-3: -The Lincoln–Douglas debate format is named for the 1858 Lincoln–Douglas debates between Abraham Lincoln and Stephen A. Douglas, because their debates focused on slavery and the morals, values, and logic behind it.

Detailed explanation-4: -From August to October of 1858, Abraham Lincoln, the Republican candidate for U.S. Senate from Illinois, took on the incumbent Democratic Senator Stephen A. Douglas in a series of seven debates.