electionstracker

Portugal 1980 legislative election

What was the result of the 1980 legislative election in Portugal?

Social Democratic Party won 82 of 250 seats. 83.9% 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 82 of 250 seats; 83.9% of registered voters cast a ballot, up 1.1 points on 1979.

  • Democratic Alliance 0 0 seats 47.6% +3.9 points
  • Socialist Party 66 −8 seats 27.8% −0.3 points
  • United People Alliance 0 0 seats 17.1% −2.2 points
  • Popular Democratic Union 1 0 seats 1.4% −0.8 points
  • Workers' Party of Socialist Unity 0 1.4%
  • Revolutionary Socialist Party 0 1.0%
  • Social Democratic Party 82 +7 seats
  • CDS – People's Party 46 +3 seats
  • Portuguese Communist Party 39 −5 seats
  • People's Monarchist Party 6 +1 seat
  • Independent Social Democrats 4
  • Leftwing Union for the Socialist Democracy 4
  • 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 1979 legislative election, party by party.

126 of 250 seats make a majority

Key numbers

  1. +7 seats

    Seats gained by Social Democratic Party

    The largest gain in seats compared with 1979. Socialist Party lost 8 seats.

  2. 83.9%

    Voter turnout

    Up 1.1 points on 1979.

Seats and votes by party

PartySeats± seats%± pointsVotes
Democratic Alliance0047.6+3.92,868,076
Socialist Party66−827.8−0.31,673,279
United People Alliance0017.1−2.21,009,505
Popular Democratic Union101.4−0.883,204
Workers' Party of Socialist Unity01.483,095
Revolutionary Socialist Party01.060,496
Social Democratic Party82+7
CDS – People's Party46+3
Portuguese Communist Party39−5
People's Monarchist Party6+1
Independent Social Democrats4
Leftwing Union for the Socialist Democracy4
Portuguese Democratic Movement2−1

± is the change against the Portugal 1979 legislative election, party by party.

Votes by party
  • Democratic Alliance 2,868,076
  • Socialist Party 1,673,279
  • United People Alliance 1,009,505
  • Popular Democratic Union 83,204
  • Workers' Party of Socialist Unity 83,095
  • Revolutionary Socialist Party 60,496
  • Social Democratic Party
  • CDS – People's Party
  • Portuguese Communist Party
  • People's Monarchist Party
  • Independent Social Democrats
  • Leftwing Union for the Socialist Democracy
  • Portuguese Democratic Movement

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.

How many people voted?

83.9% of the 7,179,023 registered voters cast a ballot (6,026,395 ballots), up 1.1 points on 1979. 5,888,733 of them were valid votes. The highest turnout since 1975 in our data.

How do the votes compare with the seats?

  • Socialist Party27.8% of votes26.4% of seats
  • Popular Democratic Union1.4% of votes0.4% of seats
  • Democratic Alliance47.6% of votes0.0% of seats
  • United People Alliance17.1% of votes0.0% of seats
Each party's share of the vote (outlined) and of the seats (filled)

The Gallagher index of disproportionality is 46.0 (0 when seats follow votes exactly); the effective number of parties is 3.0 by votes and 4.2 by seats; Democratic Alliance led Socialist Party by 19.8 points of the vote.

Time and source Data as of