section_path: Republican politics (1854–1860)/Emergence as Republican leader
section_name: Emergence as Republican leader
paragraph_text: Emergence as Republican leader
  
  The debate over the status of slavery in the territories failed to alleviate tensions between the slave-holding South and the free North, with the failure of the Compromise of 1850, a legislative package designed to address the issue. In his 1852 eulogy for Clay, Lincoln highlighted the latter's support for gradual emancipation and opposition to "both extremes" on the slavery issue. As the slavery debate in the Nebraska and Kansas territories became particularly acrimonious, Illinois Senator Stephen A. Douglas proposed popular sovereignty as a compromise; the measure would allow the electorate of each territory to decide the status of slavery. The legislation alarmed many Northerners, who sought to prevent the spread of slavery that could result, but Douglas's Kansas–Nebraska Act narrowly passed Congress in May 1854.
  
  Lincoln did not comment on the act until months later in his " Peoria Speech " of October 1854. Lincoln then declared his opposition to slavery, which he repeated en route to the presidency. He said the Kansas Act had a " declared indifference, but as I must think, a covert real zeal for the spread of slavery. I cannot but hate it. I hate it because of the monstrous injustice of slavery itself. I hate it because it deprives our republican example of its just influence in the world...." Lincoln's attacks on the Kansas–Nebraska Act marked his return to political life.
  
  Nationally the Whigs were irreparably split by the Kansas–Nebraska Act and other efforts to compromise on the slavery issue. Reflecting on the demise of his party, Lincoln wrote in 1855, "I think I am a Whig, but others say there are no Whigs, and that I am an abolitionist.... I do no more than oppose the extension of slavery." The new Republican Party was formed as a northern party dedicated to antislavery, drawing from the antislavery wing of the Whig Party and combining Free Soil, Liberty, and antislavery Democratic Party members, Lincoln resisted early Republican entreaties, fearing that the new party would become a platform for extreme abolitionists. Lincoln held out hope for rejuvenating the Whigs, though he lamented his party's growing closeness with the nativist Know Nothing movement.
  
  In 1854, Lincoln was elected to the Illinois legislature, but before the term began in January he declined to take his seat so that he would be eligible to be a candidate in the upcoming U.S. Senate election. The year's elections showed the strong opposition to the Kansas–Nebraska Act, and in the aftermath Lincoln sought election to the U.S. Senate. At that time, senators were elected by state legislatures. After leading in the first six rounds of voting, he was unable to obtain a majority. Lincoln instructed his backers to vote for Lyman Trumbull. Trumbull was an antislavery Democrat and had received few votes in the earlier ballots; his supporters, also antislavery Democrats, had vowed not to support any Whig. Lincoln's decision to withdraw enabled his Whig supporters and Trumbull's antislavery Democrats to combine and defeat the mainstream Democratic candidate, Joel Aldrich Matteson.