Elections to the European Parliament were held from June 10, 2004 to June 13, 2004 in the 25 member states of the European Union, using varying election days according to local custom. Votes were counted as the polls closed, but results were not announced until 13 and 14 June so results from one country would not influence voters in another where polls were still open; however, the Netherlands, voting on Thursday 10, announced nearly-complete provisional results as soon as they were counted, on the evening of its election day, a move heavily criticized by the European Commission.
342 million people were eligible to vote, the second-largest democratic electorate in the world after India. It was the biggest transnational direct election in history, and the 10 new member states elected MEPs for the first time. The new Parliament consisted of 732 Members of the European Parliament (MEPs).
Results showed a general defeat of governing parties and an increase in representatives from eurosceptic parties. No majority was achieved. The balance of power in the Parliament remained the same despite the 10 new member states.
