Why stephan Douglas win only 1 state?

Stephen Douglas, a prominent Democratic politician in the 1860 presidential election, won only one state—Missouri—primarily due to his association with the increasingly divisive issue of slavery. His stance on popular sovereignty, which allowed territories to decide on the legality of slavery, alienated both Northern Democrats and anti-slavery factions. Additionally, the emergence of Abraham Lincoln as a strong Republican candidate, who garnered significant support in the North, further diminished Douglas's chances. This fragmentation of the Democratic vote ultimately led to his limited electoral success.