SON is a Galician political party created in 2015, promoted by Renewal–Nationalist Brotherhood (Anova) and United Left to participate in the local elections of the same year.
Likewise, SON also seeks to gain representation in the provincial deputations.
[3] In practice it is an "instrumental" party, without permanent bodies, and whose only objective is to support local candidacies.
After the local elections, SON gained the mayoralties of Cangas, Ferrol, Manzaneda, Teo and Val do Dubra.
In 2016, after a motion of no confidence, Son also gained the mayoralty of Mugardos.