Since then the PSTU has continued as a persistent presence in the Brazilian labour and social movements to the left of the PT. It has lost a number of members in splits, most recently to the newly formed PSOL, which it refused to become a part of. It contests national and local elections and is involved in social movements, particularly the labor movement and student movement. The PSTU publishes the weekly newspaper "Opinião Socialista" ("Socialist Opinion") and is the main group contributing to the journal "Marxism Alive/Marxismo Vivo".