Member Parties of the EL are socialist, communist, red-green and other democratic left parties of the member states and associated states of the European Union (EU) that work together and establish various forms of co-operation at all levels of political activity in Europe, based on the agreements, basic principles and political aims laid down in the EL Manifesto. Membership to the EL is open to any left party and political organisation in Europe that agrees with the aims and principles of the EL Manifesto and accepts the EL statutes.