As a group of Castilian nationalists, they also seek to unify the other Spanish Autonomous Communities of Cantabria, Castile y Leon, Castile-La Mancha, La Rioja, and Madrid.

Izquierda Castellana also supports various nationalist movements around the world, such as those in the Basque Country, Palestine or Ireland, emphasizing a democratic perspective and the sovereignty of the working class.

It emphasizes socialism, sovereignty and republicanism, principles it reaffirms each year on April 23, in a special ceremony in the municipality of Villalar de los Comuneros.

It was not simply a change of name but the natural evolution of the project after years of struggles and experiences of another step in the construction of a real Spanish organization qualified to give answers to the problems that they suffer as young.

It is something that traditionally ignite the spark; the symbolic name presents to us as what we aspire to be and a catalytic tool of ideas and actions that will lead us to kindle the flame of the social revolution, gender and national they need.