 All the nationalist left-wing political parties of Galicia (BNG, AGE, FPG, CERNA, Nós-Unidade Popular, Causa Galiza, ...) use the Estreleira flag as a party symbol.It's also used by the left-wing nationalist trade unions (such as CIG or CUT).It doesn't have exact size, and the red star in the middle sometimes goes aligned with the blue band.