electionstracker

Portugal 1989 European Parliament election

What was the result of the 1989 European Parliament election in Portugal?

Social Democratic Party won 9 of 24 seats with 33.8% of the vote. 51.1% of registered voters cast a ballot.

  • Portugal
  • Held:
  • Final result
  • ParlGov, read 5 October 2026

Which party won the most seats?

Final results from ParlGov, read : Social Democratic Party won 9 of 24 seats with 33.8% of the vote; 51.1% of registered voters cast a ballot, down 21.3 points on 1987.

  • Social Democratic Party 9 −1 seat 33.8% −4.6 points
  • Socialist Party 8 +2 seats 29.4% +6.4 points
  • Unitary Democratic Coalition 0 −3 seats 14.9% +3.1 points
  • CDS – People's Party 3 −1 seat 14.6% −1.2 points
  • People's Monarchist Party 0 0 seats 2.1% −0.7 points
  • Portuguese Democratic Movement 0 1.4%
  • Popular Democratic Union 0 1.1%
  • Portuguese Communist Party 3
  • Ecology Party -- Greens 1
  • Seats won
  • Change on the previous election at the right
  • Share of the vote
  • Share at the previous election
  • Change in points at the right

Changes are against the Portugal 1987 European Parliament election, party by party.

Key numbers

  1. 33.8%

    Share of the vote won by Social Democratic Party

    It led Socialist Party by 4.3 points of the vote.

  2. +2 seats

    Seats gained by Socialist Party

    The largest gain in seats compared with 1987. CDS – People's Party lost 1 seat.

  3. 51.1%

    Voter turnout

    Down 21.3 points on 1987.

Seats and votes by party

PartySeats± seats%± pointsVotes
Social Democratic Party9−133.8−4.61,358,958
Socialist Party8+229.4+6.41,184,380
Unitary Democratic Coalitionwith Democratic Intervention0−314.9+3.1597,759
CDS – People's Party3−114.6−1.2587,497
People's Monarchist Party002.1−0.784,272
Portuguese Democratic Movement01.456,900
Popular Democratic Union01.145,017
Portuguese Communist Party3
Ecology Party -- Greens1

± is the change against the Portugal 1987 European Parliament election, party by party.

Votes by party
  • Social Democratic Party 1,358,958
  • Socialist Party 1,184,380
  • Unitary Democratic Coalition 597,759
  • CDS – People's Party 587,497
  • People's Monarchist Party 84,272
  • Portuguese Democratic Movement 56,900
  • Popular Democratic Union 45,017
  • Portuguese Communist Party
  • Ecology Party -- Greens

ParlGov lists parties with at least 1 percent of the vote or 2 seats, so the rows do not add up to the valid votes.

ParlGov counts an alliance's votes and seats under its first party: such a row names the allies it counts.

How many people voted?

51.1% of the 8,121,564 registered voters cast a ballot (4,149,756 ballots), down 21.3 points on 1987. 4,022,000 of them were valid votes.

How do the votes compare with the seats?

  • Social Democratic Party33.8% of votes37.5% of seats
  • Socialist Party29.4% of votes33.3% of seats
  • CDS – People's Party14.6% of votes12.5% of seats
  • Unitary Democratic Coalition14.9% of votes0.0% of seats
  • People's Monarchist Party2.1% of votes0.0% of seats
Each party's share of the vote (outlined) and of the seats (filled)

The Gallagher index of disproportionality is 14.8 (0 when seats follow votes exactly); the effective number of parties is 4.1 by votes and 3.5 by seats; Social Democratic Party led Socialist Party by 4.3 points of the vote.

Time and source Data as of