Abstract: Early XXI century is the time when the world was rearranged and new relationships between the society and the political authorities were formed. The present study analyzes network mechanisms of political communication and their influence on the transformation of political systems of modern states. The applied relevance of this study is conditioned by the wide use of network forms of communication between the structures of the civil society and the state. Boundaries between them are largely diluted now. On the one hand, this extends the possibilities for citizens to participate in the political activity; on the other hand, this makes such participation spontaneous and uncontrollable. Both tendencies greatly influence the political process not only in the conditions of stable democratic regimes but also in various types of authoritarian and semi-authoritarian regimes. The authors make the following conclusions with respect to the fact whether proliferation of internet-technologies and growth of social networks introduce fundamental changes into political process, into a sphere of state and non-state actors or not: (1) The present-day political reality is largely defined by establishing network communities, (2) Network technologies and structures introduce completely new features into the process of transformation of the national state and its sovereignty, (3) Establishing network structures of management influences the expanding participation of bureaucracy in the processes of making political decisions and (4) Political science reacts to new demands from the society by updating its methodological postulates as well as introducing new notions.