The Statute of Autonomy of the Basque Country is the legal document organizing the political system of the Autonomous Community of the Basque Country' (Basque: Euskadiko Autonomi Erkidegoa) which includes the historical territories of Alava, Biscay and Gipuzkoa. It forms the region into one of the autonomous communities envisioned in the Spanish Constitution of 1978. It is also known as the Statute of Gernika (Spanish: Estatuto de Guernica), after the city of Gernika where its final form was approved on 29 December 1978. It was ratified by referendum on 25 October 1979, despite the abstention of more than 40% of the electorate. The statute was accepted by the lower house of the Spanish Parliament on November 29 and the Spanish Senate on December 12.
The statute was meant to encompass all the historical provinces inhabited by the Basque people in Spain, who had proved a strong will for acknowledgement of a separate identity and status, even in non Basque nationalist circles. A draft statute for the Spanish Basque Country was then drawn up to provide for that urge with a view to comprising all the historically Basque territories. However, the blueprint came up against much opposition in Navarre (Unión del Pueblo Navarro party founded) and rightist and nationalist circles of the still Francoist central administration. At the beginning of the 1980s the Spanish Socialist party and their regional branch too swerved to a Navarre-only stance, paving the way to a separate autonomous community.
The Statute of Autonomy of the Basque Country retained though in its wording the spirit of the original blueprint, namely allowing the necessary means for the development in liberty of the Basque people, while now limited only to the western Álava, Gipuzkoa and Biscay provinces. The possibility of Navarre joining in is anyway emphasized and provisioned for, insomuch as they are identified as Basque people, should that be their will.