sentences:  The "ayuntamiento", presided by its "alcalde" (Mayor) is the formal institution charged with the government and administration of most municipalities.The municipal councillors forming the deliberative assembly of the "ayuntamiento" are directly elected through proportional representation with closed party lists and a 5% electoral threshold.In turn, the councillors are charged with electing from among themselves (by default candidates are the head of each electoral list) the Mayor presiding over the "ayuntamiento".