Why was stephan douglas qualified to be president?

 He was re-elected senator from Illinois in 1858 after a series of eloquent debates with the Republican candidate, Abraham Lincoln, who defeated him in the presidential race two years later.

Douglas was well known as a resourceful party leader, and an adroit, ready, skillful tactician in debate and passage of legislation. He was a champion of the Young America movement which sought to modernize politics and replace the agrarian and strict constructionist orthodoxies of the past. Douglas was a leading proponent of democracy, and believed in the principle of popular sovereignty: that the majority of citizens should decide contentious issues such as slavery and territorial expansion. As chairman of the Committee on Territories, Douglas dominated the Senate from 1850 to 1859. He was largely responsible for the Compromise of 1850 that apparently settled slavery issues.

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