# 1986 Basque regional election

[Spain](https://electionsarchive.com/es.md) / [País Vasco](https://electionsarchive.com/es/pais-vasco.md), November 30, 1986

Turnout: 1,155,815 of 1,660,143 registered voters (69.6%). +1.1 points since 1984.

## Basque Parliament

PSOE won 19 of the 75 seats, with 22.0% of the vote.

| Candidate or party | Votes | Share | Seats | Change |
| --- | --- | --- | --- | --- |
| Euzko Alderdi Jeltzalea-Partido Nacionalista Vasco | 271,208 | 23.7% | 17 | −15 |
| Spanish Socialist Workers' Party | 252,233 | 22.0% | 19 | 0 |
| Herri Batasuna | 199,900 | 17.5% | 13 | +2 |
| Eusko Alkartasuna | 181,175 | 15.8% | 13 |  |
| Euskadiko Ezkerra | 124,423 | 10.9% | 9 | +3 |
| AP-PL | 55,606 | 4.9% | 2 |  |
| Centro Democrático y Social | 40,445 | 3.5% | 2 |  |
| Plural left | 6,750 | 0.6% |  |  |
| Partido Comunista de España | 5,675 | 0.5% |  | 0 |
| PARTIDO SOCIALISTA DE LOS TRABAJADORES | 2,925 | 0.3% |  | 0 |
| PARTIDO HUMANISTA | 1,400 | 0.1% |  |  |
| PARTIDO OBRERO SOCIALISTA INTERNACIONALISTA | 1,190 | 0.1% |  |  |
| UNIDAD POPULAR REPUBLICANA | 1,102 | 0.1% |  |  |

These results come from Gobierno Vasco.

## Contests

- [Álava](https://electionsarchive.com/es/pv/1986-11-30-general/alava.md)
- [Bizkaia](https://electionsarchive.com/es/pv/1986-11-30-general/bizkaia.md)
- [Gipuzkoa](https://electionsarchive.com/es/pv/1986-11-30-general/gipuzkoa.md)

## Party system indices

[How these indices are computed](https://electionsarchive.com/indices.md)

| Chamber | Effective parties by votes | Effective parties by seats | Gallagher index | Loosemore–Hanby index | Volatility | Nationalization |
| --- | --- | --- | --- | --- | --- | --- |
| Basque Parliament | 5.68 | 5.22 | 3.3 | 5.9 | 30.9 | 0.89 |

- From 1,144,032 votes and 75 seats.
- Compared with [1984 Basque regional election](https://electionsarchive.com/es/pv/1984-02-26-general.md).
- Measured over 3 provinces.
- A large party has no recorded predecessor or successor, so its whole share counts as change.
- Measured over fewer than ten places, so read it loosely.

Also available as HTML at https://electionsarchive.com/es/pv/1986-11-30-general and JSON at https://electionsarchive.com/es/pv/1986-11-30-general.json.