Italian Socialist Party
After the establishment of the Italian Socialist Party of Proletarian Unity (PSIUP) on 22 August 1943 (with the merger between the Italian Socialist Party and the Movement of Proletarian Unity), "Avanti!" began to use again the traditional header of Galantara, proclaiming itself as the "giornale del Partito Socialista Italiano di Unità Proletaria" ("newspaper of the Italian Socialist Party of Proletarian Unity").