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Elections to the European Parliament were held in France on June 13, 2004. The opposition Socialist Party made substantial gains, although this was mainly at the expense of minor parties. The governing Union for a Popular Movement and Union for French Democracy also made gains.
The elections were conducted in 7 regional mainland constituencies, plus an eighth consisting of all Overseas Departments and Overseas Territories. Allocation of seats was by proportional representation, with closed lists and no preferential voting, using the rule of the highest average, with a threshold of 5% of the votes in each constituency.
| Constituency | Departements | Seats |
|---|---|---|
| Nord-Ouest | Basse-Normandie, Haute-Normandie, Nord-Pas-de-Calais, Picardie | 12 |
| Ouest | Brittany, Pays de la Loire, Poitou-Charentes | 10 |
| Est | Alsace, Bourgogne, Champagne-Ardenne, Franche-Comté, Lorraine | 10 |
| Sud-Ouest | Aquitaine, Languedoc-Roussillon, Midi-Pyrénées | 10 |
| Sud-Est | Corsica, Provence-Alpes-Cote d'Azur, Rhône-Alpes | 13 |
| Massif-Central - Centre | Auvergne, Centre, Limousin | 6 |
| Île-de-France | Île-de-France | 14 |
| outre-mer (not shown) | French Polynesia, Guadeloupe, Guyane, Martinique, Mayotte, New Caledonia, Réunion, Saint Pierre and Miquelon, Wallis and Futuna | 3 |
See MEPs for France 2004 - 2009 for a national list in alphabetical order.