Socialist Workers' Party (Argentina)

The Socialist Workers' Party (Spanish: Partido de los Trabajadores Socialistas, PTS), previously known as the Workers Party for Socialism (Partido de Trabajadores por el Socialismo), is a Trotskyist political party in Argentina. It was founded in 1988 by expelled members of the Movement for Socialism (MAS). MAS was a Trotskyist party led by Nahuel Moreno until his death.

After the 2023 Argentine general election, the PTS has four national deputies in the National Congress of Argentina: Nicolás del Caño, Christian Castillo, Myriam Bregman, and Alejandro Vilca.

Located on the far left side of the political spectrum and member of the Workers' Left Front, the PTS aims to establish a working-class government that breaks with capitalism, putting forth a material hegemonic force grounded in the main combats and organization processes of the working class—such as the student and women's movement—, seeking to develop revolutionary factions within them.

By establishing this electoral coalition, the PTS managed to enter the Argentine Congress for the first time after the legislative elections of 2013. As part of the Front, it obtained representation in the Buenos Aires Legislature, as well as the provincial legislatures of Buenos Aires, Córdoba, Jujuy, Mendoza and Neuquén and in the city councils of Godoy Cruz, Las Heras, Maipú and Mendoza in Mendoza and the city councils of Libertador General San Martín, Palpalá and San Salvador in Jujuy. It has four national deputies, including Nicolás del Caño; current or recent provincial deputies include Christian Castillo, Raúl Godoy, Myriam Bregman, Laura Vilches and Laura Cano.

The PTS has presence in the majority of provinces and in Buenos Aires City; its members have seats in the Buenos Aires Underground union (AGTSyP), the Neuquén ceramics workers union (SOECN), the Western Soapmakers Workers Union (SOJO), as well as occupying secretaries in the United Argentinian Tire Workers Trade Union (SUTNA), the United Trade Union of Education Workers (SUTE, Mendoza) and several sections of the Buenos Aires Education Workers Trade Union (SUTEBA) etc. Its youth branch conducts the student unions in highschools, and the universities of Buenos Aires (UBA), La Plata (UNLP), General Sarmiento (UNGS), Quilmes (UNQ) and Comahue (UNCo). The PTS also publishes the digital newspaper La Izquierda Diario (the daily left), located among the top 100 most visited websites in the country.