electionstracker

United Kingdom 1966 general election

What was the result of the 1966 general election in the United Kingdom?

Labour Party won 364 of 630 seats with 48.0% of the vote. 76.0% of registered voters cast a ballot.

  • United Kingdom
  • Held:
  • Final result
  • ParlGov, read 5 October 2026

Which party won the most seats?

Final results from ParlGov, read : Labour Party won 364 of 630 seats with 48.0% of the vote; 76.0% of registered voters cast a ballot, down 1.2 points on 1964.

  • Labour Party 364 +47 seats 48.0% +3.9 points
  • Conservatives and National Liberals 0 0 seats 41.9% −1.5 points
  • Liberal Party 12 +3 seats 8.6% −2.6 points
  • Scottish National Party 0 0.5%
  • Republican Labour Party 1 0.1%
  • Conservative Party 250 −48 seats
  • National Liberal Party 3 −3 seats
  • 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 United Kingdom 1964 general election, party by party.

316 of 630 seats make a majority

Key numbers

  1. 48.0%

    Share of the vote won by Labour Party

    Labour Party won 364 of 630 seats. A majority needs 316.

  2. +47 seats

    Seats gained by Labour Party

    The largest gain in seats compared with 1964. Conservative Party lost 48 seats.

  3. 76.0%

    Voter turnout

    Down 1.2 points on 1964.

Seats and votes by party

PartySeats± seats%± pointsVotes
Labour Party364+4748.0+3.913,096,629
Conservatives and National Liberals0041.9−1.511,418,455
Liberal Party12+38.6−2.62,327,457
Scottish National Party00.5128,474
Republican Labour Party10.126,292
Conservative Party250−48
National Liberal Party3−3

± is the change against the United Kingdom 1964 general election, party by party.

Votes by party
  • Labour Party 13,096,629
  • Conservatives and National Liberals 11,418,455
  • Liberal Party 2,327,457
  • Scottish National Party 128,474
  • Republican Labour Party 26,292
  • Conservative Party
  • National Liberal Party

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?

76.0% of the 35,957,245 registered voters cast a ballot (27,314,646 ballots), down 1.2 points on 1964. 27,264,747 of them were valid votes.

How do the votes compare with the seats?

  • Labour Party48.0% of votes57.8% of seats
  • Liberal Party8.6% of votes1.9% of seats
  • Republican Labour Party0.1% of votes0.2% of seats
  • Conservatives and National Liberals41.9% of votes0.0% of seats
Each party's share of the vote (outlined) and of the seats (filled)

The Gallagher index of disproportionality is 41.7 (0 when seats follow votes exactly); the effective number of parties is 2.4 by votes and 2.0 by seats; Labour Party led Conservatives and National Liberals by 6.1 points of the vote.

Time and source Data as of