Stephen Arnold Douglas was an American politician from the western state of Illinois

Illinois

Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

, and was the Northern Democratic Party

History of the United States Democratic Party

The history of the Democratic Party of the United States is an account of the oldest political party in the United States and arguably the oldest democratic party in the world....

 nominee for President

President of the United States

The President of the United States of America is the head of state and head of government of the United States. The president leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces....

 in 1860

United States presidential election, 1860

The United States presidential election of 1860 was a quadrennial election, held on November 6, 1860, for the office of President of the United States and the immediate impetus for the outbreak of the American Civil War. The nation had been divided throughout the 1850s on questions surrounding the...

. He lost to the Republican Party

History of the United States Republican Party

The United States Republican Party is the second oldest currently existing political party in the United States after its great rival, the Democratic Party. It emerged in 1854 to combat the Kansas Nebraska Act which threatened to extend slavery into the territories, and to promote more vigorous...

's candidate, Abraham Lincoln

Abraham Lincoln

Abraham Lincoln was the 16th President of the United States, serving from March 1861 until his assassination in April 1865. He successfully led his country through a great constitutional, military and moral crisis – the American Civil War – preserving the Union, while ending slavery, and...

, whom he had defeated two years earlier in a Senate

United States Senate

The United States Senate is the upper house of the bicameral legislature of the United States, and together with the United States House of Representatives comprises the United States Congress. The composition and powers of the Senate are established in Article One of the U.S. Constitution. Each...

 contest following a famed series of debates

Lincoln-Douglas debates of 1858

The Lincoln–Douglas Debates of 1858 were a series of seven debates between Abraham Lincoln, the Republican candidate for Senate in Illinois, and the incumbent Senator Stephen Douglas, the Democratic Party candidate. At the time, U.S. senators were elected by state legislatures; thus Lincoln and...

. He was nicknamed the "Little Giant" because he was short of stature but was considered by many a "giant" in politics. Douglas was well known as a resourceful party leader, and an adroit, ready, skillful tactician in debate and passage of legislation.