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.
Republican State Committee of Pennsylvania
The party was founded on November 27, 1854, in Towanda (Bradford County) by former Congressman David Wilmot. Wilmot invited a small group of friends and political leaders to the organization's first meeting, which took place in his home. Among the attendees were Senator Simon Cameron, Congressman Thaddeus Stevens, Colonel Alexander McClure and future Governor Andrew Curtin. Wilmot convinced the group to form local Republican Clubs in their home counties. George Bloom made the Republican Party a statewide organization in 1959. He had the headquarters located in Harrisburg, where it remains to this day.