It existed between 1974 and 1978, during the Francoist dictatorship and the early Spanish transition to democracy, which had banned all the political organizations other than those in the Movimiento Nacional.

The party considered that Valencians were a "singular people", part of the cultural and national unity of the Catalan Countries.

Its founders came from different left-wing currents, but the majority were members or had been close to the historic Valencian Socialist Party.

The party experimented a significant growth in 1975, specially in Horta Nord, the stronghold of the PSPV.

Due to the good results of the PSOE, that won in the Valencian Country, a sector in the PSPV defended joining that party.