The Independent Radical Social Democratic Party was a political party

Political party

A political party is a political organization that typically seeks to influence government policy, usually by nominating their own candidates and trying to seat them in political office. Parties participate in electoral campaigns, educational outreach or protest actions...

 in Czechoslovakia

Czechoslovakia

Czechoslovakia or Czecho-Slovakia was a sovereign state in Central Europe which existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, until 1992...

. The party was founded on May 26, 1921. The party was led by Vilém Brodecký.

The party formed a joint parliamentary group, Socialist Association

Socialist Association

The Socialist Association was a union of two political parties in Czechoslovakia, the Independent Socialists of Bohuslav Vrbenský and the Independent Radical Social Democratic Party of Vilém Brodecký. The Socialist Association was founded on March 23, 1923 by the fusion of the parliamentary...

, together with the Independent Socialist Party

Independent Socialist Workers Party

The Independent Socialist Party was a political party in Czechoslovakia. The party was founded in March 1923. The party included a number of former anarchists, who had joined the Czech Socialist Party in 1918. They had however been expelled from the Czechoslovak Socialist Party in 1923, as they...

. The two parties were set to merge at a congress in June 1924, but Brodecký's party decided to hold its own party congress on September 13–14, 1924. That congress resolved to merge with the Czechoslovak Social Democratic Workers Party

Czech Social Democratic Party

The Czech Social Democratic Party is a social-democratic political party in the Czech Republic.-History:The Social Democratic Czechoslavonic party in Austria was founded on 7 April 1878 in Austria-Hungary representing the Kingdom of Bohemia in the Austrian parliament...

. That merger became effective on October 14, 1924.