William H. Seward
The Republican Party had been founded in 1854, in reaction to the Kansas-Nebraska Act. Its anti-slavery stance was attractive to Seward, but he needed the Whig structure in New York to get re-elected. In September 1855, the New York Whig and Republican parties held simultaneous conventions that quickly merged into one. Seward was the most prominent figure to join the new party, and was spoken of as a possible presidential candidate in 1856. Weed, however, did not feel that the new party was strong enough on a national level to secure the presidency, and advised Seward to wait until 1860. When Seward's name was mentioned at the 1856 Republican National Convention, a huge ovation broke out. In the 1856 presidential election, the Democratic candidate, former Pennsylvania senator James Buchanan, defeated the Republican, former California senator John C. Frémont, and the Know Nothing candidate, former president Fillmore.
Republicanism in the United States
In 1792–93 Jefferson and Madison created a new "Democratic-Republican party" in order to promote their version of the doctrine. They wanted to suggest that Hamilton's version was illegitimate. According to Federalist Noah Webster, a political activist bitter at the defeat of the Federalist party in the White House and Congress, the choice of the name "Democratic-Republican" was "a powerful instrument in the process of making proselytes to the party. ... The influence of names on the mass of mankind, was never more distinctly exhibited, than in the increase of the democratic party in the United States. The popularity of the denomination of the Republican Party, was more than a match for the popularity of Washington's character and services, and contributed to overthrow his administration." The party, which historians later called the Democratic-Republican Party, split into separate factions in the 1820s, one of which became the Democratic Party. After 1832, the Democrats were opposed by another faction that named themselves "Whigs" after the Patriots of the 1770s who started the American Revolution. Both of these parties proclaimed their devotion to republicanism in the era of the Second Party System.