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.
History of the United States Republican Party
The Republicans welcomed the Progressive Era at the state and local level. The first important reform mayor was Hazen S. Pingree of Detroit (1890–1897), who was elected governor of Michigan in 1896. In New York City, the Republicans joined nonpartisan reformers to battle Tammany Hall and elected Seth Low (1902–1903). Golden Rule Jones was first elected mayor of Toledo as a Republican in 1897, but was reelected as an independent when his party refused to renominate him. Many Republican civic leaders, following the example of Mark Hanna, were active in the National Civic Federation, which promoted urban reforms and sought to avoid wasteful strikes.
The party controlled the presidency throughout the 1920s, running on a platform of opposition to the League of Nations, high tariffs, and promotion of business interests. Warren G. Harding, Calvin Coolidge and Herbert Hoover were resoundingly elected in 1920, 1924 and 1928, respectively. The breakaway efforts of Senator Robert La Follette in 1924 failed to stop a landslide for Coolidge and his movement fell apart. The Teapot Dome Scandal threatened to hurt the party, but Harding died and Coolidge blamed everything on him as the opposition splintered in 1924.