The purpose of this paper is to provide some answers to the following questions. How diffusely organized in networks and subnets, Internet users become groups of influence and turn aside the electoral choices of "ordinary" voters exposed to influence of mediatic system and election propaganda? Is it a democratic progress which transforms the forms of governance by broadening its base or, on the contrary, based on the "digital gap", does this expression result in the appropriation of political games by groups of "actives minorities"? From examples of mobilization of these groups during the recent U.S. presidential campaigns author try to analyze their impact on the future of Western democracies.
