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2004 European Parliament election in Ireland

← 1999 11 June 2004 2009 →
← outgoing members elected members →
13 seats to the European Parliament
Turnout	1,841,335 (59.0% 8.8 pp)
First party Second party Third party   Leader Enda Kenny Bertie Ahern Gerry Adams Party Fine Gael Fianna Fáil Sinn Féin Alliance EPP–ED UEN GUE/NGL Leader since 2 June 2002 19 December 1994 1983 Last election 24.6%, 4 seats 38.6%, 6 seats 6.3%, 0 seats Seats won 5 / 13 4 / 13 1 / 13 Seat change 1 2 1 Popular vote 464,414 524,504 197,715 Percentage 27.8% 29.5% 11.1% Swing 3.2 pp 9.1 pp 4.8 pp   Fourth party Fifth party Sixth party   Leader Pat Rabbitte Trevor Sargent Joe Higgins Party Labour Green Socialist Party Alliance PES Greens/EFA Leader since October 2002 6 November 2001 — Last election 8.7%, 1 seat 6.7%, 2 seats 0.8%, 0 seats Seats won 1 / 13 0 / 13 0 / 11 Seat change 2 Popular vote 188,132 76,917 23,218 Percentage 10.5% 4.3% 1.3% Swing 1.8 pp 2.4 pp 0.5 pp
Colours indicate winning party.

The 2004 European Parliament election in Ireland was the Irish component of the 2004 European Parliament election. The voting was held on Friday, 11 June 2004. The election coincided with the 2004 local elections. The election was conducted under the single transferable vote.

Since the 1999 European Parliament election, Ireland's entitlement had fallen from 15 seats to 13 seats due to European Union expansion and some constituencies boundaries and names were changed.

• Munster constituency lost County Clare and was reduced from 4 seats to 3 and renamed South
• Connacht–Ulster gained County Clare and was renamed North-West
• Leinster had no boundary changes but was reduced from 4 seats to 3 and renamed East
• Dublin was unchanged

The election was organised by city/county council area, the basis for the local elections being held simultaneously. Voters received different-coloured ballot papers for the European election, city/county council election, and a constitutional referendum, all of which went into the same ballot box and were separated by colour once the boxes arrived at the count centre for the city/county. Not all voters received all ballots as the franchises differ. The European ballots were all counted in one city/county, necessitating a second transportation of the separated ballots from the other city/county centres. For example, the East ballots were counted in Navan, County Meath.^[1]

• List of members of the European Parliament for Ireland, 2004–09 – List ordered by constituency
• For the Northern Ireland European Parliament elections, see 2004 UK European Parliament election.

• ElectionsIreland.org – 2004 European Parliament (Ireland) election results
• European Election News by European Election Law Association (Eurela)