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Spain election 2026 in Biscay (Bizkaia): polls and seat projection

Basque Country8 seats
D-16days to the election

PSOE estimated first in Biscay, 26%.

As of 12 November 2026, PSOE is estimated at 26.1% in the constituency of Biscay for Spain's general election on 29 November, against 21.6% for EH Bildu, according to the Sondagio model. The 8 seats would be shared out as follows, with the 80% range of the 2,000 simulations: PSOE 2–3, EH Bildu 2–3, PNV 1–2, PP 1 and Frente Amplio 0–1. PSOE tops the vote in 74% of simulations (EH Bildu in 18% and PNV in 8%). No polls of single provinces are published: the estimate applies the national average to the 2023 result.

In 2023, PNV came first in Biscay with 27.0% (official result).
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Estimate and seats in Biscay

Sondagio model · D'Hondt, 3% threshold
PartyEstimated vote, %80% rangeSeatsTops the vote
PSOE26.121.5–30.52–374%
EH Bildu21.617.8–25.72–318%
PNV19.716.0–23.51–28%
PP12.910.0–15.91–
Frente Amplio7.96.1–10.00–1–
Vox5.34.0–6.80–
Podemos3.22.5–4.20–

Estimate: the national average of 16 pollsters applied to the 2023 result; 8 in 10 simulations fall inside the range. It is not a poll of Biscay. Method.

The parties in Biscay

who they are · who heads the list
PartyWho they areHeads the list
PSOEthe centre-left Socialist party of Prime Minister Pedro SánchezPatxi López Alvarez
EH Bilduleft-wing Basque pro-independence coalitionOskar Matute Garcia de Jalón
PNVBasque Nationalist Party, moderate and centre-rightIdoia Sagastizabal Unzetabarrenetxea
PPthe main centre-right party (People's Party), in opposition since 2018Esther Martínez Fernández
Frente Amplioleft-wing alliance led by Ada Colau that brings together Sumar (PSOE's coalition partner since 2023), United Left, Más Madrid, Comuns and othersLander Martínez Hierro
Voxradical-right Spanish nationalists, hard line on immigration and on Catalan and Basque nationalismMarco Antonio Moreno Asla
Podemosradical-left party that broke away from SumarJose Manuel de Pablos Bajo

11 lists stand for Congress in Biscay. Source: lists proclaimed in the BOE of 3 November 2026, with the correction of 7 November. Every name on every list (in Spanish) →

2023 general election result in Biscay

23 July 2023 · Congress · % of valid votes · official result
Party% of votesSeats
PNV27.02
PSOE25.82
EH Bildu20.72
PP11.51
Sumar10.91
Vox2.60

Source: Spain's Interior Ministry, official results (compiled on Wikipedia, CC BY-SA 4.0).

Nearby constituencies

Also in Basque Country: Álava, Gipuzkoa. Neighbouring provinces in other regions: Cantabria, Burgos.

Questions about the election in Biscay

How many seats does Biscay elect?
Biscay elects 8 of the 350 members of Spain's Congress of Deputies at the general election of 29 November 2026, the same number as in 2023. Seats are shared out by the D'Hondt method among the lists that win at least 3% of the valid votes in the constituency.
Who is ahead in Biscay according to the polls?
In the Sondagio estimate as of 12 November 2026, PSOE comes first in Biscay with 26.1% (between 21.5% and 30.5% in 80% of simulations), ahead of EH Bildu on 21.6%. PSOE tops the vote in 74% of the 2,000 simulations; EH Bildu in 18% and PNV in 8%. Estimated seats: PSOE 2–3, EH Bildu 2–3, PNV 1–2, PP 1 and Frente Amplio 0–1.
Who heads the lists for Congress in Biscay?
Patxi López Alvarez (PSOE), Oskar Matute Garcia de Jalón (EH Bildu), Idoia Sagastizabal Unzetabarrenetxea (PNV), Esther Martínez Fernández (PP) and Lander Martínez Hierro (Frente Amplio). These are the lists officially proclaimed and published in Spain's state gazette (BOE) on 3 November 2026; 11 lists stand for Congress in Biscay.
Are there polls of Biscay for the general election?
Almost every poll of the general election is national and publishes no figures for Biscay. The Sondagio estimate applies the national average of 16 pollsters to the 2023 result in Biscay: it is a model, not a poll of the constituency.
When is Spain's general election?
Sunday 29 November 2026. Polling stations open from 9am to 8pm. Spanish law bans the publication of polls from 24 to 28 November.
Who won in Biscay at the 2023 general election?
PNV topped the vote in Biscay on 23 July 2023 with 27.0% of valid votes. Seats: PSOE 2, EH Bildu 2, PNV 2, PP 1 and Sumar 1 (official result).

More on Spain's election

All 52 constituencies