The Socialist Party of America (SPA) was a socialist political party in the United States formed in 1901 by a merger between the three-year-old Social Democratic Party of America and disaffected elements of the Socialist Labor Party of America who had split from the main organization in 1899.
Norman Mattoon Thomas was an American Presbyterian minister who achieved fame as a socialist, pacifist, and six-time presidential candidate for the Socialist Party of America.
The Social Democratic Federation of the United States of America(SDF) was a political party in the United States, formed in 1936 by the so-called "Old Guard" faction of the Socialist Party of America. The SDF later merged again with the Socialist Party in 1957 to form the Socialist Party-Social Democratic Federation (SP-SDF).
Jasper McLevy was an American politician who served as mayor of Bridgeport, Connecticut from 1933 until 1957. He was a member of the Socialist Party, later leaving in protest to join the Social Democratic Federation.
Louis Waldman was a leading figure in the Socialist Party of America from the late 1910s and through the middle 1930s, a founding member of the Social Democratic Federation, and a prominent New York labor lawyer. He was expelled from the New York State Assembly in 1920 during the First Red Scare.
Samuel Aaron DeWitt was a businessman, poet, playwright, and politician. He was a New York State Legislator who represented Bronx's 7th district from 1919 until his expulsion from the assembly in 1920 during the First Red Scare.
James J. Oneal, a founding member of the Socialist Party of America (SPA), was a prominent socialist journalist, historian, and party activist who played a decisive role in the bitter party splits of 1919–21 and 1934–36.
Charles Solomon (1889–1963) was a socialist politician from New York City, elected to the New York State Assembly in 1919 and expelled with four of his fellows on the first day of the legislative session, one week after the sensational Palmer Raids. The case of the "Five Socialist Assemblymen" became a cause célèbre of the Red Scare of 1919-20 and its resolution started the process of curbing war hysteria in the United States.
The Committee for the Preservation of the Socialist Party was a short-lived organized factional grouping in the Socialist Party of America established in 1934 by its New York–based "Old Guard" faction. The Committee was initially organized to fight for the defeat of the Declaration of Principles adopted by the 1934 National Convention in the referendum for its ratification taken by mail vote of party members. After the Declaration of Principles was passed, the Committee served as the organizational core of the Social Democratic Federation of America, a rival social democratic organization to the Socialist Party established in 1936.
The World Tomorrow: A Journal Looking Toward a Christian World (1918–1934) was an American political magazine, founded by the American office of the pacifist organization Fellowship of Reconciliation (FORUSA). It was published under the organization's The Fellowship Press, Inc., located at 108 Lexington Avenue in New York City. Prior to June 1918, the periodical was titled The New World. It was a leading voice of Christian socialism in the United States, with an "independent, militant" editorial line.
Clarence Ollson Senior (1903–1974) was an American socialist political activist best remembered as the National Executive Secretary of the Socialist Party of America during the 1930s. Originally a protégé of presidential candidate Norman Thomas, during the inner-party fight of the 1930s, Senior became an active supporter of the so-called "Militant" faction. After resigning his post late in 1936, Senior returned to graduate school, becoming a widely published academic specializing on the affairs of Puerto Rico and other nations of the Caribbean.
The Militant faction was an organized grouping of Marxists in the Socialist Party of America (SPA) who sought to steer that organization from its orientation towards electoral politics and towards direct action and revolutionary socialism. The faction emerged during 1930 and 1931 and achieved practical control of the organization in 1934. The existence of the "Militants" and the threat they represented to the political line of the SPA caused traditional electorally oriented members to form an organized grouping of their own, known as the "Old Guard faction." In 1935 the personal and political friction between these two basic tendencies lead to an organizational split, with the Old Guard faction leaving to establish the Social Democratic Federation (SDF). The Militant faction itself shattered in the aftermath of the 1935 party split with only a small core loyal to perennial Presidential candidate Norman Thomas remaining in the organization by the coming of World War II.
The Old Guard faction was an organized group in the Socialist Party of America (SPA) that sought to retain the organization's traditional orientation towards electoral politics by fighting the Militant faction of generally-younger party members who factionally organized to promote greater efforts at direct action in advancing the cause of revolutionary socialism.
Haim Kantorovitch was an American socialist teacher, writer, and Marxist theoretician. Kantorovitch is best remembered as one of the intellectual leaders of the Militant faction of the Socialist Party of America in the early 1930s and as a founder and editor of The American Socialist Quarterly, the SP's theoretical magazine.
The Workers Communist League or Gitlowites were a Right Opposition Communist group that split from the main group of the American Right Opposition, the Communist Party of the USA (Opposition) in 1933. It was the only split from that organization that created a new group.
Devere Allen (1891–1955) was an American socialist and pacifist political activist and journalist. Allen is best remembered as the main editor of The World Tomorrow following the departure of Norman Thomas from the magazine in 1922. Allen was the author of more than 20 books and pamphlets and was active in the leadership of a number of political organizations, including the League for Independent Political Action (1928–1932) and the Socialist Party of America.
The Revolutionary Policy Committee (RPC) was an offshoot of the so-called "Militant" faction in the Socialist Party of America during the middle-1930s. The group sought to transform the SP into a revolutionary socialist organization from its origins as a social democratic political party.
James Patrick Cannon was an American Trotskyist and a leader of the Socialist Workers Party.
The Socialist Workers Party (SWP) is a communist party in the United States. The SWP began as a group that was expelled from the Communist Party USA for supporting Leon Trotsky over Soviet leader Joseph Stalin. Since the 1930s, it has published The Militant as a weekly newspaper. It also maintains Pathfinder Press.
The Socialist Party of North Carolina (SPNC) is a multi-tendency democratic socialist political party in the U.S. state of North Carolina. The party was launched in 1901 as the state organization of the Socialist Party of America (SPA), its direct organizational antecedent, and later reformed in 1996 as the state SPUSA affiliate after the SPA became Social Democrats, USA.