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 National Committee
The 1856 Republican National Convention appointed the first RNC. It consisted of one member from each state and territory to serve for four years. Each national convention since then has followed the precedent of equal representation for each state or territory, regardless of population. From 1924 to 1952, there was a national committeeman and national committeewoman from each state and U.S. possession, and from Washington, D.C.. In 1952, committee membership was expanded to include the state party chairs of states that voted Republican in the preceding presidential election, have a Republican majority in their congressional delegation (U.S. representatives and senators), or have Republican governors. By 1968, membership reached 145. As of 2011, the RNC has 168 members.