The object of our contribution is to show that, far from isolated, such examples testify the emergence of a relatively unified group of political agents who can be considered as professionals of Europe. A study of the MEPs’ properties since 1979 enables to be informed about the social conditions of the involvement in the game. For an increasing number of the European political personnel, Europe is a path towards political professionalization. Without enough central political resources to reach durably high positions at the national level, the institutional transformations of the 1980s and the 1990s however provide the opportunity for these new MPs to build and win within the EP a set of positions they contribute to place in the middle of the space (power positions). We will secondly see that a space of practices corresponds to this space of position, and that European political activity appears like a genuine job that organizes itself around specific stakes and rules, know-how and specific resources one must master to move and be recognized in the institution. It is through the institutionalisation of political resources that, beyond the fragmentation of the European spaces, a relatively unified definition of the European parliamentary function is structured.