Cádiz (Congress of Deputies constituency)

Cádiz
Cádiz
Congress of Deputies; Electoral constituency
	Location of Cádiz within Spain
Province	Cádiz
Autonomous community	Andalusia
Population	1,254,291 (2024)
Electorate	1,017,958 (2023)
Major settlements	Jerez de la Frontera, Cádiz, Algeciras, San Fernando, El Puerto de Santa María
Current constituency
Created	1977
Seats	8 (1977–1986); 9 (1986–2011); 8 (2011–2015); 9 (2015–present)
Members	PP (4); PSOE (3); Vox (1); Sumar (1);

Cádiz is one of the 52 constituencies represented in the Congress of Deputies, the lower chamber of the Spanish parliament, the Cortes Generales. The constituency (whose boundaries correspond to those of the homonymous province) currently elects nine deputies. The electoral system uses the D'Hondt method and closed-list proportional voting, with a minimum threshold of three percent.

Electoral system

The constituency was created as per the Political Reform Law and was first contested in the 1977 general election. The Law provided for the provinces of Spain to be established as multi-member districts in the Congress of Deputies,^[2] with this regulation being maintained under the Spanish Constitution of 1978.^[3] Additionally, the Constitution requires for any modification of the provincial limits to be approved under an organic law, needing an absolute majority in the Cortes Generales.^[4]

Voting is based on universal suffrage, comprising all Spanish nationals over 18 years of age with full political rights, provided that they have not been deprived of the right to vote by a final sentence.^[5] The only exception was in 1977, when this was limited to nationals over 21 years of age and in full enjoyment of their political and civil rights.^[6]^[7] Amendments in 2011 required non-resident citizens to apply for voting, a system known as "begged" voting (Spanish: Voto rogado).^[8]^[9] which was abolished in 2022.^[10] Further, amendments in 2018 granted the right to vote to those legally incapacitated.^[11] The Congress of Deputies has a minimum of 300 and a maximum of 400 seats, with electoral provisions fixing its size at 350. Of these, 348 are elected in 50 multi-member constituencies corresponding to the provinces of Spain—each of which is assigned an initial minimum of two seats and the remaining 248 distributed in proportion to population—using the D'Hondt method and closed-list proportional voting, with a three percent-threshold of valid votes (including blank ballots) in each constituency. The remaining two seats are allocated to Ceuta and Melilla as single-member districts elected by plurality voting.^[12] The use of this electoral method may result in a higher effective threshold depending on district magnitude and vote distribution.^[13] The law does not provide for by-elections to fill vacant seats; instead, any vacancies arising after the proclamation of candidates and during the legislative term are filled by the next candidates on the party lists or, when required, by designated substitutes.^[14]

The electoral law allows for parties and federations registered in the interior ministry, alliances and groupings of electors to present lists of candidates. Parties and federations intending to form an alliance are required to inform the relevant electoral commission within 10 days of the election call—15 before 1985—whereas groupings of electors need to secure the signature of at least one percent of the electorate in the constituencies for which they seek election—one permille of the electorate, with a compulsory minimum of 500 signatures, until 1985—disallowing electors from signing for more than one list. Also since 2011, parties, federations or alliances that have not obtained a mandate in either chamber of the Cortes at the preceding election are required to secure the signature of at least 0.1 percent of electors in the aforementioned constituencies.^[15] Amendments in 2007 required a balanced composition of men and women in the electoral lists, so that candidates of either sex made up at least 40 percent of the total composition; further amendments in 2024 required the use of a zipper system.^[16]

Deputies

Deputies 1977–present

Key to parties

PCE

IU

IULV–CA

U.Podemos

Podemos

Sumar

PA

PSP

PSOE

Cs

UCD

PP

CP

AP

Vox

Legislature

Election

Distribution

Constituent

1977

1

4

2

1st

1979

1

2

3

2

2nd

1982

6

2

3rd

1986

7

2

4th

1989

1

6

1

5th

1993

1

5

3

6th

1996

1

4

7th

2000

1

4

8th

2004

6

3

9th

2008

5

4

10th

2011

3

5

11th

2015

2

3

1

3

12th

2016

2

3

1

3

13th

2019 (Apr)

2

3

2

1

14th

2019 (Nov)

1

3

1

2

15th

2023

1

3

4

1

General elections