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2027 Barcelona municipal election

Election in the Spanish municipality of Barcelona From Wikipedia, the free encyclopedia

A municipal election will be held in Barcelona on 23 May 2027 to elect the 13th City Council of the municipality of Barcelona. All 43[a] seats in the City Council will be up for election. It will be held concurrently with regional elections in at least seven autonomous communities and local elections all across Spain.

Quick facts All 43 seats in the City Council of Barcelona 22 seats needed for a majority, Leader ...
2027 Barcelona municipal election
← 2023
23 May 2027
All 43[a] seats in the City Council of Barcelona
22 seats needed for a majority
Opinion polls
 
Leader Jordi Martí Jaume Collboni Gerardo Pisarello
Party Junts PSC–CP BComú–C
Leader since 6 September 2024 5 May 2014 20 February 2026
Last election 11 seats, 22.5% 10 seats, 19.8% 9 seats, 19.8%
Current seats 11 10 9
Seats needed Increase 10 Increase 11 Increase 12
 
Leader Elisenda Alamany Daniel Sirera Gonzalo de Oro
Party ERC–AM PP Vox
Leader since 22 December 2023 9 January 2023 5 January 2023
Last election 5 seats, 11.2% 4 seats, 9.2% 2 seats, 5.7%
Current seats 5 4 2
Seats needed Increase 16 Increase 17 Increase 19
Incumbent Mayor

Jaume Collboni
PSC


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Overview

Under the 1978 Constitution, the governance of municipalities in Spain—part of the country's local government system—is centered on the figure of city councils (Spanish: ayuntamientos), local corporations with independent legal personality composed of a mayor, a government council and an elected legislative assembly.[2] The mayor is indirectly elected by the local assembly, requiring an absolute majority; otherwise, the candidate from the most-voted party automatically becomes mayor (ties are resolved by drawing lots).[3] In the case of Barcelona, the top-tier administrative and governing body is the City Council of Barcelona.[4]

Date

The term of local assemblies in Spain expires four years after the date of their previous election, with election day being fixed for the fourth Sunday of May every four years (as of 2026, this has been the year before a leap year). The election decree shall be issued no later than 54 days before the scheduled election date and published on the following day in the Official State Gazette (BOE).[5] The previous local elections were held on 28 May 2023, setting the date for election day on the fourth Sunday of May four years later, which is 23 May 2027.

Local assemblies can not be dissolved before the expiration of their term, except in cases of mismanagement that seriously harm the public interest and imply a breach of constitutional obligations, in which case the Council of Ministers can—optionally—decide to call a by-election.[6]

Electoral system

Voting for local assemblies is based on universal suffrage, comprising all Spanish nationals over 18 years of age, registered and residing in the municipality and with full political rights (provided that they have not been deprived of the right to vote by a final sentence), as well as resident non-national European citizens, and those whose country of origin allows reciprocal voting by virtue of a treaty.[7]

Local councillors are elected using the D'Hondt method and closed-list proportional voting, with a five percent-threshold of valid votes (including blank ballots) in each municipality.[8] Each municipality is a multi-member constituency, with a number of seats based on the following scale:[9]

More information Population, Councillors ...
Population Councillors
<100 3
101–250 5
251–1,000 7
1,001–2,000 9
2,001–5,000 11
5,001–10,000 13
10,001–20,000 17
20,001–50,000 21
50,001–100,000 25
>100,001 +1 per each 100,000 inhabitants or fraction
+1 if total is an even number
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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 will be filled by the next candidates on the party lists or, when required, by designated substitutes.[10]

Current council

The table below shows the composition of the political groups in the local assembly at the present time.[11]

More information Groups, Parties ...
Current Council composition
Groups Parties Councillors
Seats Total
Together for Catalonia's Municipal Group JxCat 11 11
Socialist Municipal Group PSC 10 10
Barcelona in Common's Municipal Group BComú 9 9
Republican Municipal Group ERC 5 5
People's Party's Municipal Group PP 4 4
Vox's Municipal Group Vox 2 2
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Parties and candidates

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, whereas groupings of electors need to secure the signature of a determined amount of the electors registered in the municipality for which they seek election, disallowing electors from signing for more than one list. In the case of Barcelona, as its population is over 1,000,001, at least 8,000 signatures are required.[12] Amendments in 2024 required a balanced composition of men and women in the electoral lists through the use of a zipper system.[13]

Below is a list of the main parties and alliances which will likely contest the election:

More information Candidacy, Parties and alliances ...
Candidacy Parties and
alliances		 Leading candidate Ideology Previous result Gov. Ref.
Vote % Seats
Junts
List
 Jordi Martí Catalan independence
Populism		 22.5% 11 No [14]
[15]
[16]
PSC–CP
List
 Jaume Collboni Social democracy 19.8% 10 Yes
BComú–C
List
 Gerardo Pisarello Left-wing populism
Participatory democracy		 19.8% 9 No [17]
[18]
ERC–AM
List
 Elisenda Alamany Catalan independence
Left-wing nationalism
Social democracy		 11.2% 5 No [19]
PP
List
 Daniel Sirera Conservatism
Christian democracy		 9.2% 4 No [20]
Vox
List
 Gonzalo de Oro Right-wing populism
Ultranationalism
National conservatism		 5.7% 2 No
CUP
List
 Laure Vega Catalan independence
Socialism		 3.8% 0 No [21]
Aliança.cat
List
 Jordi Aragonès Catalan independence
Anti-immigration
Nativism		 Did not contest No [22]
[23]
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Opinion polls

The tables below list opinion polling results in reverse chronological order, showing the most recent first and using the dates when the survey fieldwork was done, as opposed to the date of publication. Where the fieldwork dates are unknown, the date of publication is given instead. The highest percentage figure in each polling survey is displayed with its background shaded in the leading party's colour. If a tie ensues, this is applied to the figures with the highest percentages. The "Lead" column on the right shows the percentage-point difference between the parties with the highest percentages in a poll.

Graphical summary

Local regression trend line of poll results from 28 May 2023 to the present day, with each line corresponding to a political party.

Voting intention estimates

The table below lists weighted voting intention estimates. Refusals are generally excluded from the party vote percentages, while question wording and the treatment of "don't know" responses and those not intending to vote may vary between polling organisations. When available, seat projections determined by the polling organisations are displayed below (or in place of) the percentages in a smaller font; 21 seats are required for an absolute majority in the City Council of Barcelona.

More information Polling firm/Commissioner, Fieldwork date ...
Polling firm/Commissioner Fieldwork date Sample size Turnout JxCat PSC BComú ERC PP Vox CUP Podem Aliança.cat SALF Lead
GAPS/Junts[p 1] 15–25 Sep 2026 800 ? 14.3–
16.3
6/8		 17.5–
19.5
8/10		 12.8–
14.8
5/7		 15.5–
17.1
7/9		 8.6–
9.9
4/5		 6.9–
8.2
3/4		 3.6–
5.1
0/2		 – 8.3–
9.4
3/6		 – 2.0–
2.4
GESOP/El Periódico[p 2] 10–21 Sep 2026 802 ? 11.9
5/6		 20.2
9/10		 12.2
5/6		 14.0
6/7		 8.3
3/4		 7.5
3/4		 6.0
2/3		 – 11.5
5/6		 – 6.2
Takticom/Metrópoli[p 3] 20 Jul 2026 ? ? 9.6
4/5		 23.7
11/12		 12.6
5/6		 17.4
7/8		 10.8
4/5		 7.6
3/4		 6.0
0/2		 – 12.4
5/6		 – 6.3
Opinòmetre (Pròxima Estació)[b][p 4] 26 May–3 Jun 2026 800 ? 8.4
3/4		 21.2
10/11		 11.4
5/6		 17.7
8/9		 11.1
5		 11.7
5/6		 4.8
0/2		 – 9.2
4/5		 – 3.5
Celeste-Tel/ERC[p 5][p 6] 17–25 Nov 2025 803 59.0 11.6
6		 20.5
10		 15.1
7		 16.5
8		 9.5
4		 6.1
3		 4.8
0		 – 10.0
5		 – 4.0
GESOP/El Periódico[p 7] 15–19 Sep 2025 801 ? 14.8
7		 23.5
11/12		 14.2
6/7		 13.0
6		 8.2
3/4		 7.0
3		 5.0
0/2		 – 5.4
2		 – 8.7
GESOP/El Periódico[p 8] 13–18 Sep 2024 800 ? 18.4
8/9		 23.1
11/12		 17.0
8		 11.2
5		 9.5
4		 5.8
2/3		 5.0
0/1		 – – – 4.7
EM-Analytics/Electomanía[p 9] 28 Aug–15 Sep 2024 1,002 ? 18.9
9		 23.5
12		 17.1
8		 10.2
5		 11.3
5		 5.5
2		 3.6
0		 – 4.5
0		 – 4.6
2024 EP election 9 Jun 2024 N/a 49.6 15.9
(7)		 29.9
(15)		 6.2
(3)		 13.8
(6)		 15.8
(7)		 5.0
(0)		 – 6.7
(3)		 – 2.0
(0)		 14.0
EM-Analytics/Electomanía[p 10] 1 Apr–15 May 2024 1,280 ? 20.7
9		 21.9
10		 17.3
8		 10.4
5		 11.1
5		 5.9
2		 3.4
0		 – 5.2
2		 – 1.2
2024 regional election 12 May 2024 N/a 61.3 19.6
(9)		 27.9
(13)		 8.9
(4)		 12.9
(6)		 13.8
(6)		 6.2
(3)		 4.7
(0)		 – 2.1
(0)		 – 8.3
2023 general election 23 Jul 2023 N/a 67.4 10.4
(4)		 33.2
(15)		 16.9
(8)		 12.2
(5)		 15.9
(7)		 5.8
(2)		 2.7
(0)		 [c] – – 16.3
2023 municipal election 28 May 2023 N/a 60.6 22.5
11		 19.8
10		 19.8
9		 11.2
5		 9.2
4		 5.7
2		 3.8
0		 – – – 2.7
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Voting preferences

The table below lists raw, unweighted voting preferences.

More information Polling firm/Commissioner, Fieldwork date ...
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Preferred Mayor

The table below lists opinion polling on leader preferences to become mayor of Barcelona.

More information Polling firm/Commissioner, Fieldwork date ...
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Predicted Mayor

The table below lists opinion polling on the perceived likelihood for each leader to become mayor.

More information Polling firm/Commissioner, Fieldwork date ...
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Notes

  1. [a]
    Seat total has been manually calculated by applying the electoral rules set out in the law, on the basis of the latest official population figures provided by the Spanish government as of 2026. As such, it should be deemed as a provisional, non-binding estimation. The definitive allocation will be determined by the election decree at the time of the parliament's dissolution.[1] The City Council size was set at 41 seats for the previous election.
  2. [b]
    Alternative projection based on raw Opinòmetre data.
  3. [c]
    Within Sumar.
  4. [d]
    Does not include non-resident citizens.

References

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