Political biases of Marche’s voters, despite the structure of electoral contest and the incidental trends changing at every election, in the middle-long period show an high stability. The territorial concentration of the electoral consent of each political party or coalition continues to be clear, however, for years, a slow but progressive process of eradication of their traditional vote’s settlement is going on: the parties’ levels of consent, net of the swinging that mark every election, tend to be unchanged, but this consent is spread more and more evenly on the territory. The reasons of eradication are mainly the political parties’ structural and functional crisis and the change of political communication and electoral campaigns imposed by the use of mass-media. These same reasons brought about a change of the necessary resources to enter parliamentary elitè, too: personal resources replaced those owned by political organizations. Members of the Chamber of Deputies elected in Marche have a very high social and professional status more and more, while tend to disappear those with a popular profile.