Ohio, on June 2 to 6, 1856. The delegates were deeply divided over slavery. On the first ballot, Buchanan placed first with 135.5 votes to 122.5 for Pierce, 33 for Douglas, and 5 for Senator Lewis Cass, who had been the presidential nominee in 1848. With each succeeding ballot, Douglas gained at Pierce's expense. On the 15th ballot, most of Pierce's delegates shifted to Douglas in an attempt to stop Buchanan, but Douglas withdrew when it became clear Buchanan had the support of the majority of those at the convention, also fearing that his continued participation might lead to divisions within the party that could endanger its chances in the general election. For the first (and to date, only) time in American history a man who had been elected president was denied re-nomination after seeking it. A host of 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, besides having been selected as an elector, was also supporting former Speaker of the House 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. Republican Party nomination Republican candidates: John C. Frémont, former United States Senator from California John McLean, Associate Justice of the United States Supreme Court Republican candidates gallery The Republican Party was formed in early 1854 to oppose the Kansas-Nebraska Act. During the midterm elections of 1854–1855, the Republican Party was one of the patchwork of anti-administration parties contesting the election, but they were able to win thirteen seats in the House of Representatives for the 34th Congress. However, the party collaborated with other disaffected groups and gradually absorbed them. In the elections of 1855, the Republican Party won three governorships. The first Republican National Convention was held in the Musical Fund Hall in Philadelphia, Pennsylvania, on June 17 to 19, 1856. The convention approved an anti-slavery platform that called for congressional sovereignty in the territories, an end to polygamy in Mormon settlements, and federal assistance for a transcontinental railroad—a political outcome of the Pacific Railroad Surveys. John C. Frémont, John McLean, William Seward, Salmon Chase, and Charles Sumner all were considered by those at the convention, but the latter three requested that their names be withdrawn. Seward and Chase did not feel