Viseu is one of the 22 multi-member constituencies of the Assembly of the Republic, the national legislature of Portugal.

The constituency currently elects eight of the 230 members of the Assembly of the Republic using the closed party-list proportional representation electoral system.

Viseu currently elects eight of the 230 members of the Assembly of the Republic using the closed party-list proportional representation electoral system.

Results of the 2024 legislative election held on 10 March 2024:[8] The following candidates were elected:[9] Pedro Alves (AD); António Leitão Amaro (AD); João Azevedo (PS); José Rui Cruz (PS); Inês Domingos (AD); Elza Pais (PS); Bernardo Pessanha (CH); and João Tilly (CH).

Results of the 1976 legislative election held on 25 April 1976:[39] The following candidates were elected:[40] Joaquim Guerra Alfaia (PPD); João Soeiro Carvalho (PPD); Jorge Dias (PPD); Álvaro Figueiredo (PPD); Armando Lopes (PS); Galvão de Melo (CDS); Álvaro Monteiro (PS); João Morgado (CDS); Rui Valadares (PS); Manuel Vasconcelos (CDS); and Ângelo Vieira (CDS).