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

The constituency currently elects 16 of the 230 members of the Assembly of the Republic using the closed party-list proportional representation electoral system.

Aveiro currently elects 16 of the 230 members of the Assembly of the Republic using the closed party-list proportional representation electoral system.

Results of the 1985 legislative election held on 6 October 1985:[32] The following candidates were elected:[33] Ferraz de Abreu (PS); Adérito Campos (PSD); Carlos Candal (PS); José Manuel Casqueiro (PSD); Ângelo Correia (PSD); Manuel Fonseca (PSD); António Frederico (PS); Arnaldo Brito Lhamas (PSD); Joaquim Martins (PSD); César de Menezes (CDS); José Mota (PS); Girão Pereira (CDS); Rui de Sá (PRD); Aníbal Santos (PRD); and Zita Seabra (APU).

Results of the 1976 legislative election held on 25 April 1976:[40] The following candidates were elected:[41] Mário Cal Brandão (PS); Carlos Candal (PS); José Rebocho Christo (CDS); Ângelo Correia (PPD); Arnaldo Brito Lhamas (PPD); Victor Machado (CDS); Sebastião Marques (PPD); Alcides Monteiro (PS); Álvaro Dias Ribeiro (CDS); José Júlio Ribeiro (PPD); Cunha Rodrigues (PPD); Reinaldo Rodrigues (PS); Maria José Sampaio (CDS); António Júlio Silva (PPD); and Avelino Zenha (PS).