Incumbent Democratic President Franklin Pierce's standing with the public had been badly damaged by "Bleeding Kansas," the civil strife in Kansas Territory over slavery. Many dissatisfied Democrats lined up behind Buchanan, who had served as Pierce's ambassador to Britain and thus had avoided the controversy over Bleeding Kansas, while a smaller group of Democrats supported Senator Stephen A. Douglas of Illinois. Buchanan led on the first ballot and slowly grew his support on subsequent ballots, leading Pierce to instruct his delegates to back Douglas. Douglas agreed to withdraw his name after receiving assurances that Buchanan would not seek re-election in 1860, allowing Buchanan to clinch the nomination on the seventeenth ballot. Pierce became the first and only elected president who was an active candidate for reelection to be denied his party's nomination for a second term.
Eleven candidates received votes on the first vice presidential ballot, with Congressman John A. Quitman winning a plurality of the vote. The delegates lined up unanimously behind Breckinridge on the second ballot, giving him the vice presidential nomination. The Democratic ticket went on to win the 1856 election, defeating the Republican ticket of John C. Fremont and William L. Dayton and the American Party ticket of Millard Fillmore and Andrew J. Donelson.
Background
Senators James A. Bayard, Jesse D. Bright, and John Slidell (of Delaware, Indiana, and Louisiana respectively) helped to organize and orchestrate James Buchanan's eventual nomination in the convention.
The Democratic Party was wounded from its devastating losses in the 1854–1855 midterm elections. The party faced continued north–south sectional division over slavery-related issues, especially the Kansas–Nebraska Act of 1854 and subsequent violence known as "Bleeding Kansas" from the civil strife in the Kansas Territory during its campaign for statehood. Two notable Democratic politicians, President Pierce and Senator Stephen Douglas of Illinois, were seen as being at the center of the controversies, which led many party members to look elsewhere for a new compromise candidate for president.
Called to order at noon on Monday, June 2, by the National Committee chair Robert Milligan McLane, Samuel Medary was made the temporary president. The first day, the convention appointed committees on credentials, organization, and resolutions.
On the second day the organization committee (John L. Dawson, chair) report was adopted and John Elliot Ward of Georgia was made the convention's president. The committee on credentials (James A. Bayard Jr., chair) settled a dispute over the Missouri delegation, but needed more time for the thorny problem of competing delegations from New York.
June 4 saw the adoption of a platform (former National Committee chair Benjamin F. Hallett headed the committee on resolutions); the domestic portions were supported unanimously, the foreign policy planks by large margins. A separately reported plank on a railroad to the Pacific coast failed by a vote of 120 to 154.
On June 5, the New York problem was finally settled by seating half of each of the competing delegations. Nominations for President were then made.
On the first ballot, Pierce received 122 votes, many of them from the South, to Buchanan's 135, with Douglas and Lewis Cass receiving the remaining votes. By the following morning fourteen ballots had been completed, but none of the three main candidates were able to get two-thirds of the vote. Pierce, whose support had been slowly declining as the ballots passed, directed his supporters to break for Douglas, withdrawing his name in a last-ditch effort to defeat Buchanan. Douglas, only 43 years of age, believed that he could be nominated in 1860 if he let the older Buchanan win this time, and received assurances from Buchanan's managers that this would be the case. After two more deadlocked ballots, Douglas's managers withdrew his name, leaving Buchanan as the clear winner. To soften the blow to Pierce, the convention issued a resolution of "unqualified approbation" in praise of his administration.[5] This loss marked the first (and to date, only) time in U.S. history that an elected president who was an active candidate for reelection was not nominated for a second term.[6]
Eleven candidates were nominated for the vice presidency, but a number of them attempted to withdraw themselves from consideration, among them the eventual nominee, John C. Breckinridge of Kentucky. Breckinridge supported fellow Kentuckian Linn Boyd for the vice presidential nomination. However, following a draft effort led by the delegation from Vermont, Breckinridge was nominated on the second ballot. As Vermont's David Allen Smalley stated, "No Democrat has a right to refuse his services when his country calls."
More information Vice Presidential Ballot, 1st (Before Shifts) ...