Viana do Castelo (Assembly of the Republic constituency)

Viana do Castelo is one of the 22 multi-member constituencies of the Assembly of the Republic, the national legislature of Portugal. The constituency was established in 1976 when the Assembly of the Republic was established by the constitution following the restoration of democracy. It is conterminous with the district of Viana do Castelo. The constituency currently elects five of the 230 members of the Assembly of the Republic using the closed party-list proportional representation electoral system. At the 2024 legislative election it had 233,491 registered electors.

Electoral system
Viana do Castelo currently elects five of the 230 members of the Assembly of the Republic using the closed party-list proportional representation electoral system. Seats are allocated using the D'Hondt method.

Summary
(Figures in italics represent alliances.)

2024
Results of the 2024 legislative election held on 10 March 2024:

The following candidates were elected: José Pedro Aguiar-Branco (AD); Emília Cerqueira (AD); José Costa (PS); Marina Gonçalves (PS); and Eduardo Teixeira (CH).

2022
Results of the 2022 legislative election held on 30 January 2022:

The following candidates were elected: Emília Cerqueira (PSD); José Costa (PS); Marina Gonçalves (PS); Jorge Salgueiro Mendes (PSD); João Montenegro (PSD); and Tiago Brandão Rodrigues (PS).

2019
Results of the 2019 legislative election held on 6 October 2019:

The following candidates were elected: Emília Cerqueira (PSD); Marina Gonçalves (PS); Jorge Salgueiro Mendes (PSD); Anabela Rodrigues (PS); Tiago Brandão Rodrigues (PS); and Eduardo Teixeira (PSD).

2015
Results of the 2015 legislative election held on 4 October 2015:

The following candidates were elected: Carlos Abreu Amorim (PàF); Abel Baptista (PàF); José Manuel Carpinteira (PS); Emília Cerqueira (PàF); Luís Campos Ferreira (PàF); and Tiago Brandão Rodrigues (PS).

2011
Results of the 2011 legislative election held on 5 June 2011:

The following candidates were elected: Carlos Abreu Amorim (PSD); Rosa Arezes (PSD); Abel Baptista (CDS-PP); Jorge Fão (PS); Fernando Medina (PS); and Eduardo Teixeira (PSD).

2009
Results of the 2009 legislative election held on 27 September 2009:

The following candidates were elected: Abel Baptista (CDS-PP); Jorge Fão (PS); Luís Campos Ferreira (PSD); José Eduardo Martins (PSD); Rosalina Martins (PS); and Defensor Moura (PS).

2005
Results of the 2005 legislative election held on 20 February 2005:

The following candidates were elected: Luís Amado (PS); Abel Baptista (CDS-PP); Jorge Fão (PS); Luís Campos Ferreira (PSD); José Eduardo Martins (PSD); and Rosalina Martins (PS).

2002
Results of the 2002 legislative election held on 17 March 2002:

The following candidates were elected: Carlos Antunes (PSD); Fernando Cabodeira (PS); Luís Campos Ferreira (PSD); Marques Júnior (PS); José Eduardo Martins (PSD); and Rosalina Martins (PS).

1999
Results of the 1999 legislative election held on 10 October 1999:

The following candidates were elected: Francisco Rodrigues Araújo (PSD); Daniel Campelo (CDS-PP); Marques Júnior (PS); Carvalho Martins (PSD); Rui Solheiro (PS); and José Carlos Tavares (PS).

1995
Results of the 1995 legislative election held on 1 October 1995:

The following candidates were elected: Marques Júnior (PS); Roleira Marinho (PSD); Carvalho Martins (PSD); Lucas Pires (PSD); Rui Solheiro (PS); and José Carlos Tavares (PS).

1991
Results of the 1991 legislative election held on 6 October 1991:

The following candidates were elected: Lima Amorim (PSD); Marques da Costa (PS); Roleira Marinho (PSD); Carvalho Martins (PSD); Luís Marques Mendes (PSD); and Oliveira e Silva (PS).

1987
Results of the 1987 legislative election held on 19 July 1987:

The following candidates were elected: Roleira Marinho (PSD); Fernandes Marques (PSD); Hilário Marques (PSD); João Oliveira Martins (PSD); Américo Sequeira (PSD); and Oliveira e Silva (PS).

1985
Results of the 1985 legislative election held on 6 October 1985:

The following candidates were elected: José Domingos (PSD); Abreu Lima (CDS); Henrique Mata (PSD); João de Deus Pinheiro (PSD); Oliveira e Silva (PS); and Agostinho de Sousa (PRD).

1983
Results of the 1983 legislative election held on 25 April 1983:

The following candidates were elected: José Domingos (PSD); José Pita Guerreiro (PS); Abreu Lima (CDS); Manuel Filipe Loureiro (PS); Roleira Marinho (PSD); and Gaspar Pacheco (PSD).

1980
Results of the 1980 legislative election held on 5 October 1980:

The following candidates were elected: Júlio Castro Caldas (AD); José Domingos (AD); Daniel Domingues (AD); Abreu Lima (AD); Roleira Marinho (AD); and Oliveira e Silva (FRS).

1979
Results of the 1979 legislative election held on 2 December 1979:

The following candidates were elected: Júlio Castro Caldas (AD); José Domingos (AD); Abreu Lima (AD); Manuel Tito de Morais (PS); Henrique Barrilaro Ruas (AD); and Vitor Vasques (PS).

1976
Results of the 1976 legislative election held on 25 April 1976:

The following candidates were elected: Eugénio Anacoreta Correia (CDS); José Rui Fernandes (PPD); Amantino Lemos (PPD); Abreu Lima (CDS); Manuel Tito de Morais (PS); Américo Sequeira (PPD); and Oliveira e Silva (PS).