A European political party (formally, a political party at European level; informally a Europarty) is a type of political party organisation operating transnationally in Europe and in the institutions of the European Union. They are regulated and funded by the European Union and are usually made up of national parties, not individuals. Europarties have the exclusive right to campaign during the European elections and express themselves within the European Parliament by their affiliated political groups and their MEPs. Europarties, through coordination meetings with their affiliated heads of state and government, influence the decision-making process of the European Council. Europarties also work closely and co-ordinate with their affiliated members of the European Commission and, according to the Lisbon Treaty the Europarty that wins the European elections has the right to nominate to the European Council its candidate for President of the European Commission.
The term "political party in the EU" can mean three different types of entities: domestic political parties, political groups in the European Parliament, and European political parties.
As of January 2016[update], there are 15 recognised Europarties:
Section 41 of the Treaty of Maastricht added Article 138a to the Treaty of Rome. Article 138a (later renumbered to Article 191) stated that "Political parties at European level are important as a factor for integration within the Union. They contribute to forming a European awareness and to expressing the political will of the citizens of the Union." So the concept of a "political party at European level" was born.