Barcelona is one of the 52 electoral districts (circunscripciones) used for the Spanish Congress of Deputies - the lower chamber of the Spanish Parliament, the Cortes Generales. When first contested in modern times in the 1977 General Election, Barcelona was the largest electoral district in Congress in terms of electorate. However by the time of the 1986 election, Madrid had overtaken it.
Under Spanish electoral law, all provinces are entitled to a minimum of 2 seats with a remaining 248 seats apportioned according to population. These laws are laid out in detail in the 1985 electoral law. (Ley Orgánica del Régimen Electoral General) The practical effect of this law has been to overrepresent smaller provinces at the expense of larger provinces like Barcelona.
In 2004 for example Spain had 34,571,831 voters giving an average of 98,777 voters per deputy . In Barcelona however the number of voters per deputy was 129,269 - the highest ratio of all 52 constituencies. In contrast the ratio was only 38,714 and 26,177 respectively in the smaller provinces of Teruel and Soria.
|Spanish Socialist Workers' Party (PSC-PSOE)||11||12||18||16||14||12||13||12||14||16|
|United Left-Initiative for Catalonia Greens (IU-ICV)||7||7||1||1||3||3||2||1||2||1|
|Democratic Convergence of Catalonia (CDC)||6|
|Convergence and Union (CiU)||6||8||11||11||10||9||9||6||6|
|Democratic Union of Catalonia (UDC)||2|
|Democratic Centre Union (UCD)||5||6|
|Republican Left of Catalonia (ERC)||1||1||1||1||1||1||4||2|
|People's Party (PP)||1||1||5||4||3||6||6||8||5||6|
|Democratic and Social Centre (CDS)||1||1|
Note: Seats shown for the PP include seats won by their predecessors, the Popular Alliance and Popular Coalition before 1989. They ran in an electoral alliance with a smaller regional grouping (Convivencia Catalana) in 1977.
PSOE has contested elections under the label Socialist Party of Catalonia (Partit dels Socialistes de Catalunya).
Democratic Convergence of Catalonia contested the 1977 election under the label Democratic Pact for Catalonia (Pacte Democràtic per Catalunya). After 1977 they have contested elections as part of an alliance with Democratic Union of Catalonia called Convergence and Unity (Convergència i Unió).
Prior to 1986, the equivalent of United Left was the Unified Socialist Party of Catalonia (Partit Socialista Unificat de Catalunya).
Republican Left of Catalonia contested the 1977 election as part of an electoral alliance called Catalan Left - Electoral Democratic Front (Esquerra de Catalunya-Front Electoral Democràtic) as openly republican parties were unable to contest the 1977 elections.
Democratic Centre Union fought the 1979 election as part of an alliance called Catalan Centrists (Centristes de Catalunya.)
|L'Hospitalet de Llobregat||52.9||10.6||18.2||8.2||7.0|
|Santa Coloma de Gramenet||56.9||8.3||17.2||6.3||8.0|
|Cornellà de Llobregat||56.1||8.7||16.1||7.5||8.7|
|Sant Boi de Llobregat||53.8||11.3||15.0||9.3||7.3|
|El Prat de Llobregat||54.2||10.5||15.6||8.6||8.2|
Only municipalities with more than 50,000 voters shown.
* for the 2004 elections the Confederation of the Greens reached an agreement with PSOE to run on their lists.