Abraham Lincoln was born in a log cabin in Hardin County, Kentucky, on February 12, 1809.

In 1860, political operatives in Illinois organized a campaign to support Abraham Lincoln for the presidency. On May 18, at the Republican National Convention in Chicago, Lincoln surpassed better known candidates such as William Seward of New York and Salmon P. Chase of Ohio. Lincoln's nomination was due in part to his moderate views on slavery, his support for improving the national infrastructure, and the protective tariff.

In the general election, Lincoln faced his friend and rival, Stephan Douglas, this time besting him in a four-way race that included John C. Breckinridge of the Northern Democrats and John Bell of the Constitution Party. Lincoln received not quite 40 percent of the popular vote, but carried 180 of 303 

As a member of the Illinois state legislature in 1834, Lincoln supported the Whig politics of government-sponsored infrastructure and protective tariffs. This political understanding led him to formulate his early views on slavery, not so much as a moral wrong, but as an impediment to economic development.

In 1854, Congress passed the Kansas-Nebraska Act, which repealed the Missouri Compromise, allowing individual states and territories to decide for themselves whether to allow slavery. The law provoked violent opposition in Kansas and Illinois, and it gave rise to the Republican Party. This awakened Abraham Lincoln's political zeal once again, and his views on slavery moved more toward moral indignation. Lincoln joined the Republican Party in 1856.

In 1857, the Supreme Court issued its controversial decision Scott v. Sanford, declaring African Americans were not citizens and had no inherent rights. Though Abraham Lincoln felt African Americans were not equal to whites, he believed America's founders intended that all men were created with certain inalienable rights. Lincoln decided to challenge sitting U.S. Senator Stephen Douglas for his seat. In his nomination acceptance speech, he criticized Douglas, the Supreme Court, and President Buchanan for promoting slavery and declared "a house divided cannot stand."

During Lincoln’s 1858 Senate campaign against Douglas, he participated in seven debates held in different cities across Illinois. The two candidates didn't disappoint the public, giving stirring debates on issues ranging from states' rights to western expansion, but the central issue was slavery. Newspapers intensely covered the debates, often times with partisan commentary. In the end, the state legislature elected Douglas, but the exposure vaulted Lincoln into national politics.