electionstracker

Japan 2005 general election

What was the result of the 2005 general election in Japan?

Liberal Democratic Party won 296 of 480 seats with 38.2% of the vote. 67.5% of registered voters cast a ballot.

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

Which party won the most seats?

Final results from ParlGov, read : Liberal Democratic Party won 296 of 480 seats with 38.2% of the vote; 67.5% of registered voters cast a ballot, up 7.6 points on 2003.

  • Liberal Democratic Party 296 +59 seats 38.2% +3.2 points
  • Democratic Party of Japan 113 −64 seats 31.0% −6.4 points
  • Komeito 31 −3 seats 13.3% −1.6 points
  • Japanese Communist Party 9 0 seats 7.3% −0.6 points
  • Japan Socialist Party 7 +1 seat 5.5% +0.4 points
  • New Party Nippon 1 2.4%
  • People's New Party 4 1.7%
  • New Party Daichi 1 0.6%
  • 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 Japan 2003 general election, party by party.

241 of 480 seats make a majority

Key numbers

  1. 38.2%

    Share of the vote won by Liberal Democratic Party

    Liberal Democratic Party won 296 of 480 seats. A majority needs 241.

  2. +59 seats

    Seats gained by Liberal Democratic Party

    The largest gain in seats compared with 2003. Democratic Party of Japan lost 64 seats.

  3. 67.5%

    Voter turnout

    Up 7.6 points on 2003.

Seats and votes by party

PartySeats± seats%± pointsVotes
Liberal Democratic Party296+5938.2+3.225,887,798
Democratic Party of Japan113−6431.0−6.421,036,425
Komeito31−313.3−1.68,987,620
Japanese Communist Party907.3−0.64,919,187
Japan Socialist Party7+15.5+0.43,719,522
New Party Nippon12.41,643,506
People's New Party41.71,183,073
New Party Daichi10.6433,938
Independents18+7

± is the change against the Japan 2003 general election, party by party.

Votes by party
  • Liberal Democratic Party 25,887,798
  • Democratic Party of Japan 21,036,425
  • Komeito 8,987,620
  • Japanese Communist Party 4,919,187
  • Japan Socialist Party 3,719,522
  • New Party Nippon 1,643,506
  • People's New Party 1,183,073
  • New Party Daichi 433,938
  • Independents

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?

67.5% of the 103,067,966 registered voters cast a ballot (69,532,186 ballots), up 7.6 points on 2003. 67,811,069 of them were valid votes. The highest turnout since 1990 in our data.

How do the votes compare with the seats?

  • Liberal Democratic Party38.2% of votes61.7% of seats
  • Democratic Party of Japan31.0% of votes23.5% of seats
  • Komeito13.3% of votes6.5% of seats
  • Japanese Communist Party7.3% of votes1.9% of seats
  • Japan Socialist Party5.5% of votes1.5% of seats
  • People's New Party1.7% of votes0.8% of seats
  • New Party Nippon2.4% of votes0.2% of seats
  • New Party Daichi0.6% of votes0.2% of seats
Each party's share of the vote (outlined) and of the seats (filled)

The Gallagher index of disproportionality is 19.0 (0 when seats follow votes exactly); the effective number of parties is 3.7 by votes and 2.3 by seats; Liberal Democratic Party led Democratic Party of Japan by 7.2 points of the vote.

Time and source Data as of