Founded in 1989 by the Revolutionary Communist Group, itself established by a group of Trotskyist students in 1974, the PST remains affiliated with Fourth International, a Trotskyist international.

[2] In the 2007 Algerian parliamentary election, the PST won 0.75% of the vote, meaning it did not receive any of the 389 seats available.

[3] In 2019, the PST joined the Forces of the Democratic Alternative (FDA), a secular alliance of political and civil opposition during the pro-democracy Hirak movement.

[5] In January 2022, the Council of State order the freezing of all PST activities, as well as the closure of its headquarters, following a complaint filed by the Ministry of the Interior.

THE PST denounced this as "a blatant attack on partisan pluralism and democratic freedoms in Algeria".