The Communist Party of Spain won most seats at the 1979 local election and remained strong in the area until the 1990s when they declined, losing their last seat at the 1995 elections.
At the 1979 local election, the Communist Party of Spain secured a significant number of seats and maintained its strength in the area until the 1990s. Their power waned thereafter, culminating in the loss of their last seat at the 1995 elections.