Massachusetts Republican Party
The Massachusetts Republican Party was founded in 1854. Drawing together abolitionist and nativist anti-Catholic elements, it quickly became the dominant political force in the state and a powerful arm of the national Republican Party. Significant founding figures include Senator Charles Sumner, formerly of the Free Soil Party, and Speaker of the House Nathaniel Prentiss Banks, formerly of the American Party. 
At the time of the Republican Party's founding in 1854, all of Massachusetts's congressional representatives but Sumner were members of the nativist Know-Nothing Party. However, Banks's role as chairman of the 1856 Republican National Convention, his active support for the Republican presidential nominee John C. Frémont in 1856 and his focus on anti-slavery legislation as Speaker put him at odds with his party. Following the Democratic victory in the 1856 elections and the Dred Scott case in 1857, the national American Party organization collapsed, and most Northern members joined the nascent Republicans. In 1857, Banks ran as a Republican against incumbent Know-Nothing Governor Henry J. Gardner and won a decisive victory.
Republican Party (Hungary)
The Republican Party was founded by entrepreneurs, businessmen and intellectuals on 3 August 1992, at the initiative of economist and Member of Parliament János Palotás, who formerly had been a non-partisan member of the governing Hungarian Democratic Forum (MDF) parliamentary group. As President of the National Association of Entrepreneurs, Palotás became a well-known public figure during the so-called "Taxi blockade" in October 1990, when laid the foundations of his popularity by decisive action, supporting the taxi drivers' demands. Because of the increasing conflicts, Palotás left the MDF caucus on 8 March 1992. Economist László Fodor, also Secretary General of the Hungarian Chamber of Commerce, professor of psychiatry András Veér and lawyer Péter Bárándy became members of the leadership. Three other MPs, László Czoma (Ind.), János Petrenkó (MSZP) and Mihály Mózes (SZDSZ) also joined the Republican Party.