2027 Zaragoza municipal election

2027 Zaragoza municipal election

23 May 2027

All 31 seats in the City Council of Zaragoza
16 seats needed for a majority
Opinion polls
 
Leader Natalia Chueca Lola Ranera Julio Calvo
Party PP PSOE Vox
Leader since 10 January 2023 19 February 2020 22 April 2019
Last election 15 seats, 37.9% 10 seats, 26.4% 4 seats, 12.4%
Current seats 15 10 4
Seats needed 1 6 12

 
Leader Elena Tomás
Party ZGZ/ZeC
Leader since 19 December 2022
Last election 2 seats, 5.8%
Current seats 2
Seats needed 14

Incumbent Mayor

Natalia Chueca
PP



A municipal election will be held in Zaragoza on Sunday, 23 May 2027, to elect the 13th City Council of the municipality. All 31 seats in the City Council will be up for election. It will be held concurrently with regional elections in at least six autonomous communities and local elections all across Spain.

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.[1][2] In the case of Zaragoza, the top-tier administrative and governing body is the City Council of Zaragoza.[3]

Electoral system

Voting for local assemblies is on the basis of universal suffrage, which comprises all nationals over 18 years of age, registered and residing in the municipality of Zaragoza and in full enjoyment of their political rights (provided that they are not sentenced—by a final court ruling—to deprivation of the right to vote), as well as resident non-national European citizens and those whose country of origin allow Spanish nationals to vote in their own elections by virtue of a treaty.[2][4][5]

Local councillors are elected using the D'Hondt method and a closed list proportional voting system, with an electoral threshold of five percent of valid votes (which includes blank ballots) being applied in each municipality.[6] Each municipality constitutes a multi-member constituency, entitled a number of seats based on the following scale:[7]

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

The law does not provide for by-elections to fill vacated seats; instead, any vacancies that occur after the proclamation of candidates and into the legislative term are to be covered by the successive candidates in the list and, when required, by the designated substitutes.[8]

The mayor is indirectly elected by the local assembly.[2] A legal clause requires candidates to earn the vote of an absolute majority of councillors, or else the candidate of the most-voted party is to be automatically appointed to the post. In the event of a tie, the appointee is to be determined by lot.[9]

Election date

The term of city councils 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 2025, this has been the year before a leap year). The election decree shall be issued no later than the fifty-fifth day prior to the scheduled election date and published on the following day in the Official State Gazette (BOE).[10] 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 councils can not be dissolved before the expiry 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—agree to call a by-election.[11]

Current council

The table below shows the composition of the political groups in the local assembly at the present time.[12]

Current council composition
Groups Parties Councillors
Seats Total
People's Municipal Group PP 15 15
Socialist Municipal Group PSOE 10 10
Vox Municipal Group Vox 4 4
Zaragoza in Common Municipal Group IU 2 2

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 ahead of an election are required to inform the relevant electoral commission within ten 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 of candidates. In the case of Zaragoza, as its population is between 300,001 and 1,000,000, at least 5,000 signatures are required.[13] Amendments to the electoral law in 2024 increased requirements for a balanced composition of men and women in the electoral lists through the use of a zipper system.[14]

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

Candidacy Parties and
alliances
Leading candidate Ideology Previous result Gov. Ref.
Vote % Seats
PP
List
Natalia Chueca Conservatism
Christian democracy
37.9% 15
PSOE Lola Ranera Social democracy 26.4% 10
Vox
List
Julio Calvo Right-wing populism
Ultranationalism
National conservatism
12.4% 4
ZGZ/ZeC Elena Tomás Localism
Left-wing populism
Participatory democracy
5.8% 2

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.

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; 16 seats are required for an absolute majority in the City Council of Zaragoza.

Polling firm/Commissioner Fieldwork date Sample size Turnout Existe SALF Lead
SocioMétrica/El Español[p 1] 29 Sep–3 Oct 2025 1,013 ? 40.3
15/16
24.2
8/9
15.3
5/6
5.1
1/2
16.1
Sigma Dos/PP[p 2] 15–30 Jun 2025 ? ? 44.4
15/16
26.0
8/9
?
3
8.4
2/3
18.4
A+M/Heraldo de Aragón[p 3] 2–10 Apr 2025 800 67.0 42.9
16
30.9
11
10.9
4
4.1
0
4.7
0
2.7
0
12.0
SocioMétrica/El Español[p 4] 1–6 Oct 2024 900 ? 41.7
16
27.0
11
11.6
4
4.0
0
4.0
0
2.2
0
0.6
0
4.5
0
2.0
0
14.7
2024 EP election 9 Jun 2024 54.2 37.0
(13)
29.5
(11)
11.1
(4)
[a] [a] 3.7
(0)
5.9
(2)
2.2
(0)
5.2
(1)
7.5
A+M/Heraldo de Aragón[p 5][p 6] 10–15 Apr 2024 800 67.3 39.4
14
32.1
12
13.6
5
4.0
0
4.9
0
2.1
0
7.3
2023 general election 23 Jul 2023 72.5 36.1
(12)
30.2
(10)
14.6
(5)
[a] [a] [a] 0.5
(0)
14.6
(4)
1.6
(0)
5.9
2023 municipal election 28 May 2023 66.6 37.9
15
26.4
10
12.4
4
5.8
2
4.7
0
4.5
0
0.9
0
11.5

Voting preferences

The table below lists raw, unweighted voting preferences.

Preferred Mayor

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

Predicted Mayor

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

Notes

  1. ^ a b c d e f g h i j Within Sumar.

References

Opinion poll sources
  1. ^ a b c "Natalia Chueca rozaría la mayoría absoluta en Zaragoza en unas elecciones que decidirá el voto joven". El Español (in Spanish). 12 October 2025.
  2. ^ "Chueca al borde de la mayoría absoluta y revalidaría la alcaldía con un Vox en alza". Hoy Aragón (in Spanish). 22 July 2025.
  3. ^ "Sondeo electoral: Natalia Chueca tendría mayoría absoluta en Zaragoza y el PSOE crecería a costa de ZEC". Heraldo de Aragón (in Spanish). 23 April 2025.
  4. ^ "El PP, en máximos históricos en Aragón: Azcón está a 1 solo escaño de la mayoría absoluta y Chueca la tiene en Zaragoza". El Español (in Spanish). 12 October 2024.
  5. ^ "Encuesta A+M: Chueca (PP) resiste, PSOE y Vox crecen, ZEC desaparece y solo la derecha podría gobernar Zaragoza". Heraldo de Aragón (in Spanish). 23 April 2024.
  6. ^ "[M] ZARAGOZA. Encuesta A+M 23/04/2024: PP 39,4% (14), PSOE 32,1% (12), VOX 13,6% (5), CHA 4,9%, ZGZ 4,0%, PODEMOS-AV 2,1%". Electográfica (in Spanish). 23 April 2024.
  7. ^ "Barómetro semestral de los servicios municipales de la ciudad de Zaragoza. 1er semestre 2025" (PDF). City Council of Zaragoza (in Spanish). 8 September 2025.
  8. ^ "Barómetro semestral de los servicios municipales de la ciudad de Zaragoza. 1er semestre 2024" (PDF). City Council of Zaragoza (in Spanish). 26 July 2024.
  9. ^ "Barómetro semestral de los servicios municipales de la ciudad de Zaragoza. 2o semestre 2023" (PDF). City Council of Zaragoza (in Spanish). 30 January 2024.
Other
  1. ^ Constitution (1978), art. 140.
  2. ^ a b c LBRL (1985), art. 19.
  3. ^ LBRL (1985), arts. 121–132.
  4. ^ Constitution (1978), art. 13.
  5. ^ LOREG (1985), arts. 2–3 & 176.
  6. ^ LOREG (1985), arts. 163 & 180.
  7. ^ LOREG (1985), art. 179.
  8. ^ LOREG (1985), arts. 46, 48 & 182.
  9. ^ LOREG (1985), art. 196.
  10. ^ LOREG (1985), arts. 42 & 194.
  11. ^ LBRL (1985), art. 61.
  12. ^ Lozano, Carles. "Elecciones municipales en Zaragoza (desde 1979)". Historia Electoral.com (in Spanish). Retrieved 4 November 2025.
  13. ^ LOREG (1985), arts. 44 & 187.
  14. ^ LOREG (1985), art. 44 bis.

Bibliography