Tierra Comunera (in English: Commoners' Land) is a nationalist political party

Political party

A political party is a political organization that typically seeks to influence government policy, usually by nominating their own candidates and trying to seat them in political office. Parties participate in electoral campaigns, educational outreach or protest actions...

 in the Spanish

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

 historical region of Castile

Castile (historical region)

A former kingdom, Castile gradually merged with its neighbours to become the Crown of Castile and later the Kingdom of Spain when united with the Crown of Aragon and the Kingdom of Navarre...

. It is modelled after the Basque

Basque nationalism

Basque nationalism is a political movement advocating for either further political autonomy or, chiefly, full independence of the Basque Country in the wider sense...

 and Catalan

Catalan nationalism

Catalan nationalism or Catalanism , is a political movement advocating for either further political autonomy or full independence of Catalonia....

 nationalist parties but does not advocate full independence for Castile, instead favoring cooperation or unification among what they call the five Castilian regions within Spain (Castile and León

Castile and León

Castile and León is an autonomous community in north-western Spain. It was so constituted in 1983 and it comprises the historical regions of León and Old Castile...

, Castile-La Mancha

Castile-La Mancha

Castile-La Mancha is an autonomous community of Spain. Castile-La Mancha is bordered by Castile and León, Madrid, Aragon, Valencia, Murcia, Andalusia, and Extremadura. It is one of the most sparsely populated of Spain's autonomous communities...

, Madrid

Madrid

Madrid is the capital and largest city of Spain. The population of the city is roughly 3.3 million and the entire population of the Madrid metropolitan area is calculated to be 6.271 million. It is the third largest city in the European Union, after London and Berlin, and its metropolitan...

, Cantabria

Cantabria

Cantabria is a Spanish historical region and autonomous community with Santander as its capital city. It is bordered on the east by the Basque Autonomous Community , on the south by Castile and León , on the west by the Principality of Asturias, and on the north by the Cantabrian Sea.Cantabria...

 and La Rioja). It considers itself a left-of-centre

Left-wing politics

In politics, Left, left-wing and leftist generally refer to support for social change to create a more egalitarian society...

, social democratic

Social democracy

Social democracy is a political ideology of the center-left on the political spectrum. Social democracy is officially a form of evolutionary reformist socialism. It supports class collaboration as the course to achieve socialism...

 and environmentalist

Environmentalism

Environmentalism is a broad philosophy, ideology and social movement regarding concerns for environmental conservation and improvement of the health of the environment, particularly as the measure for this health seeks to incorporate the concerns of non-human elements...

party.