electionstracker

Belgium 2003 federal election

What was the result of the 2003 federal election in Belgium?

Party of Liberty and Progress / Flemish Liberals and Democrats and Socialist Party each won 25 of 150 seats. 91.6% of registered voters cast a ballot.

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

Which parties won the most seats?

Final results from ParlGov, read : Party of Liberty and Progress / Flemish Liberals and Democrats and Socialist Party each won 25 of 150 seats, more than any other party; 91.6% of registered voters cast a ballot, up 1.1 points on 1999.

  • Party of Liberty and Progress / Flemish Liberals and Democrats 25 +2 seats 15.4% +1.1 points
  • Socialist Party Different / Social Liberal Party 23 14.9%
  • Flemish Christian Peoples Party / Christian Democrats & Flemish 21 −1 seat 13.3% −0.8 points
  • Socialist Party 25 +6 seats 13.0% +2.9 points
  • Flemish Block / Flemish Interest 18 +3 seats 11.6% +1.7 points
  • Reformist Movement 24 11.4%
  • Humanist Democratic Centre 8 −2 seats 5.5% −0.4 points
  • New Flemish Alliance 1 3.1%
  • Ecolo 4 −7 seats 3.1% −4.2 points
  • National Front 1 0 seats 2.0% +0.5 points
  • 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 Belgium 1999 federal election, party by party.

76 of 150 seats make a majority

Key numbers

  1. +6 seats

    Seats gained by Socialist Party

    The largest gain in seats compared with 1999. Groen lost 9 seats.

  2. 91.6%

    Voter turnout

    Up 1.1 points on 1999.

Seats and votes by party

PartySeats± seats%± pointsVotes
Party of Liberty and Progress / Flemish Liberals and Democrats25+215.4+1.11,009,223
Socialist Party Different / Social Liberal Partywith Socialist Party and Spirit2314.9979,750
Flemish Christian Peoples Party / Christian Democrats & Flemish21−113.3−0.8870,749
Socialist Party25+613.0+2.9855,992
Flemish Block / Flemish Interest18+311.6+1.7761,407
Reformist Movement2411.4748,952
Humanist Democratic Centre8−25.5−0.4359,660
New Flemish Alliance13.1201,399
Ecolo4−73.1−4.2201,118
Groen0−92.5−4.5162,205
National Front102.0+0.5130,012

± is the change against the Belgium 1999 federal election, party by party.

Votes by party
  • Party of Liberty and Progress / Flemish Liberals and Democrats 1,009,223
  • Socialist Party Different / Social Liberal Party 979,750
  • Flemish Christian Peoples Party / Christian Democrats & Flemish 870,749
  • Socialist Party 855,992
  • Flemish Block / Flemish Interest 761,407
  • Reformist Movement 748,952
  • Humanist Democratic Centre 359,660
  • New Flemish Alliance 201,399
  • Ecolo 201,118
  • Groen 162,205
  • National Front 130,012

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?

91.6% of the 7,570,337 registered voters cast a ballot (6,936,801 ballots), up 1.1 points on 1999. 6,572,189 of them were valid votes. The highest turnout since 1991 in our data.

How do the votes compare with the seats?

  • Party of Liberty and Progress / Flemish Liberals and Democrats15.4% of votes16.7% of seats
  • Socialist Party13.0% of votes16.7% of seats
  • Reformist Movement11.4% of votes16.0% of seats
  • Socialist Party Different / Social Liberal Party14.9% of votes15.3% of seats
  • Flemish Christian Peoples Party / Christian Democrats & Flemish13.3% of votes14.0% of seats
  • Flemish Block / Flemish Interest11.6% of votes12.0% of seats
  • Humanist Democratic Centre5.5% of votes5.3% of seats
  • Ecolo3.1% of votes2.7% of seats
  • New Flemish Alliance3.1% of votes0.7% of seats
  • National Front2.0% of votes0.7% of seats
  • Groen2.5% of votes0.0% of seats
Each party's share of the vote (outlined) and of the seats (filled)

The Gallagher index of disproportionality is 5.0 (0 when seats follow votes exactly); the effective number of parties is 8.9 by votes and 7.0 by seats; Party of Liberty and Progress / Flemish Liberals and Democrats led Socialist Party Different / Social Liberal Party by 0.5 points of the vote.

Time and source Data as of