Zamora is one of the 59 constituencies (Spanish: circunscripciones) represented in the Senate of Spain, the upper chamber of the Spanish parliament, the Cortes Generales. The constituency elects four senators. Its boundaries correspond to those of the Spanish province of Zamora. The electoral system uses an open listpartial block voting, with electors voting for individual candidates instead of parties. Electors can vote for up to three candidates.
^"Cifras oficiales de población resultantes de la revisión del Padrón municipal a 1 de enero. Población por provincias y por sexo". ine.es (in Spanish). National Institute of Statistics. Retrieved 17 November 2019.
^"Nota de prensa. Elecciones a Cortes Generales de 10 de noviembre de 2019" (PDF). ine.es (in Spanish). National Institute of Statistics. Retrieved 17 November 2019.
^"Electoral Results Consultation. Senate. 2023". Ministry of the Interior (in Spanish). Retrieved 29 August 2023.