Ibiza–Formentera (Senate constituency)

For the Parliament of the Balearic Islands constituencies, see Formentera (Parliament of the Balearic Islands constituency) and Ibiza (Parliament of the Balearic Islands constituency).

Ibiza–Formentera
Senate of Spain Electoral constituency
Location of Ibiza–Formentera within Spain
Island	Formentera and Ibiza
Autonomous community	Balearic Islands
Population	172,033 (2024)
Electorate	105,924 (2023)
Major settlements	Ibiza, Santa Eulària des Riu
Current constituency
Created	1977
Seats	1
Member	PSOE (1)

Ibiza–Formentera (Catalan: Eivissa–Formentera) is one of the 59 constituencies represented in the Senate of Spain, the upper chamber of the Spanish parliament, the Cortes Generales. The constituency (whose boundaries correspond to those of the islands of Ibiza and Formentera) elects one senator. The electoral system uses open list partial block voting, with electors voting for individual candidates instead of parties.

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 Senate, with this regulation being maintained under the Spanish Constitution of 1978. 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.

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. 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. Amendments in 2011 required non-resident citizens to apply for voting, a system known as "begged" voting (Spanish: Voto rogado). which was abolished in 2022. Further, amendments in 2018 granted the right to vote to those legally incapacitated. 209 Senate seats (207 in 1977, 208 from 1978 to 2026) are elected using open-list partial block voting: voters in constituencies electing four seats can choose up to three candidates; in those with two or three seats, up to two; and in single-member districts, one. Each of the 47 peninsular provinces is allocated four seats, while in insular provinces—such as the Balearic and Canary Islands—the districts are the islands themselves, with the larger ones (Mallorca, Gran Canaria and Tenerife) being allocated three seats each, and the smaller ones (Menorca, Ibiza, Formentera, Fuerteventura, La Gomera, El Hierro, Lanzarote and La Palma) one each. Ceuta and Melilla elect two seats each. Until 1985, the law also provided for by-elections to fill Senate seats vacated up to two years into the legislature; subsequently, 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.

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. 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.

Senators

Senators for Ibiza–Formentera 1977–
Key to parties   EFS   PSOE+ExC   PSOE   PP   CP   CD   AP
Legislature	Election	Distribution
Constituent	1977	1
1st	1979	1
2nd	1982	1
3rd	1986	1
4th	1989	1
5th	1993	1
6th	1996	1
7th	2000	1
8th	2004	1
9th	2008	1
10th	2011	1
11th	2015	1
12th	2016	1
13th	2019 (Apr)	1
14th	2019 (Nov)	1
15th	2023	1

General elections

2023

Summary of the 23 July 2023 Senate of Spain election results in Ibiza-Formentera

Candidates	Parties and coalitions		Popular vote
			Votes	%
Y Juanjo Ferrer Martínez		PSOE–SMR–EU–Ara Eivissa	26,389	45.41
• Miquel Jerez		PP	23,472	40.39
• Encarnación Castro Rojas		Vox	6,607	11.37
• Javier Sánchez Aranda		Recortes Cero	577	0.99
Blank ballots			1,070	1.84
Total			58,115
Valid votes			58,115	96.80
Invalid votes			1,922	3.20
Votes cast / turnout			60,037	56.68
Abstentions			45,887	43.32
Registered voters			105,924
Sources

November 2019

Summary of the 10 November 2019 Senate of Spain election results in Ibiza–Formentera

Candidates	Parties and coalitions		Popular vote
			Votes	%
Y Patricia Abascal Jiménez		PSOE	15,574	29.07
• Jacobo Varela de Limia Chordá		PP	14,492	27.05
• Mario Miguel Devis Luján		Podemos–EUIB	9,094	16.97
• Carlos Torres Mayans		Vox	6,822	12.73
• Johanna Alejandra Gámez Zúñiga		Cs	3,618	6.75
• Josep Antoni Prats Serra		esquerra	1,612	3.01
• Daniel Ramón Planells Fragua		PACMA	1,166	2.18
• Javier Sánchez Aranda		Recortes Cero–GV	283	0.53
Blank ballots			919	1.72
Total			53,581
Valid votes			53,581	97.66
Invalid votes			1,284	2.34
Votes cast / turnout			54,865	53.01
Abstentions			48,638	46.99
Registered voters			103,503
Sources

1986

Summary of the 22 June 1986 Senate of Spain election results in Ibiza–Formentera

Candidates	Parties and coalitions		Popular vote
			Votes	%
Y Alonso Marí Calbet		AP–PDP–PL	13,203	44.77
• Jaime Ribas Prats		PSOE	11,194	37.96
• Andrés Tuells Juan		CDS	2,092	7.09
• Juan Pantaleoni Rosello		PRD	929	3.15
• Antonio Planells Tur		IU	706	2.39
• Elsa Gluck Rogg		VERDE	273	0.93
• Fidel Arcos García		MUC	121	0.41
• José Francisco Crespo Albiach		UCE	100	0.34
Blank ballots			872	2.96
Total			29,490
Valid votes			29,490	95.95
Invalid votes			1,244	4.05
Votes cast / turnout			30,734	57.94
Abstentions			22,308	42.06
Registered voters			53,042
Sources

1982

Summary of the 28 October 1982 Senate of Spain election results in Ibiza–Formentera

Candidates	Parties and coalitions		Popular vote
			Votes	%
Y Enrique Ramón Fajarnés		AP–PDP	14,849
• María de los Llanos Lozano Guevara		PSOE	9,916
• Víctor Ferraz Yagüe		UCD	2,316
• Andrés Tuells Juan		CDS	1,089
• Antonio Planells Tur		PCE	794
• José María Puget Acebo		AEPI	0
• Ramón Francisco Martín Gordón		FE–JONS	0
Blank ballots
Total
Valid votes
Invalid votes
Votes cast / turnout
Abstentions
Registered voters			43,130
Sources

1979

Summary of the 1 March 1979 Senate of Spain election results in Ibiza–Formentera

Candidates	Parties and coalitions		Popular vote
			Votes	%
Y Abel Matutes Juan		CD	10,265	42.40
• Isidor Marí Mayans		CPI	7,763	32.07
• Juan Marí Tur		UCD	5,612	23.18
• Guillermo Tuells Riquer		PL	220	0.91
• Antonio Ferrer Juan		UN	115	0.48
Blank ballots			235	0.97
Total			24,210
Valid votes			24,210	98.20
Invalid votes			443	1.80
Votes cast / turnout			24,653	63.53
Abstentions			14,152	36.47
Registered voters			38,805
Sources

1977

Summary of the 15 June 1977 Senate of Spain election results in Ibiza–Formentera

Candidates	Parties and coalitions		Popular vote
			Votes	%
Y Abel Matutes Juan		AP	8,862
• Isidor Marí Mayans		BA (PSP–PCE–PSD)	6,540
• Guillermo Tuells Riquer		UCD	5,585
• Mariano Llobet Román		MAP	1,880
• Ernesto Altes Coll		UDIB	269
Blank ballots
Total
Valid votes
Invalid votes
Votes cast / turnout
Abstentions
Registered voters			35,170
Sources

Bibliography

• Ley 1/1977, de 4 de enero, para la Reforma Política (Fundamental Law 1/1977). Official State Gazette (in Spanish). 4 January 1977. BOE-A-1977-165. Retrieved 27 December 2016.
• Real Decreto-ley 20/1977, de 18 de marzo, sobre Normas Electorales (Royal Decree-Law 20/1977). Official State Gazette (in Spanish). 18 March 1977. BOE-A-1977-7445. Retrieved 27 December 2016.
• Constitución Española (Constitution). Official State Gazette (in Spanish). 27 December 1978. BOE-A-1978-31229. Retrieved 1 June 2026.
• Ley Orgánica 5/1985, de 19 de junio, del Régimen Electoral General (Organic Law 5/1985). Official State Gazette (in Spanish). 19 June 1985. BOE-A-1985-11672. Retrieved 6 August 2026.
• Carreras de Odriozola, Albert; Tafunell Sambola, Xavier (2005) [1989]. Estadísticas históricas de España, siglos XIX-XX (PDF) (in Spanish). Vol. 1 (II ed.). Bilbao: Fundación BBVA. pp. 1072–1097. ISBN 84-96515-00-1. Archived from the original (PDF) on 24 September 2015.