Abstract: Problems associated with the development of parliamentarism and democracy are fundamental and mostly are of polemical character. In legal science, meticulous attention is given to revelation of the essence and categorical analysis of these institutions. The theoretical-legal substantiation of their organic interrelation is being developed to a far lesser degree. The article analyzes the views of researchers upon the representative nature of legislative power, determines its place within the system of popular representation, and describes the meaning of electoral legal relations as a source of correlation between parliamentarism and democracy. The author proves that consensual declaration of will expressed by the representative legislative authority in its bills, is intended to be the permanent, legal, objectified representation of will and interest of the people. Critical assessment is given to the current state of Russian parliamentarism, which represents a dynamically development state legal institution. A conclusion is substantiated that without efficient functionality of the national mechanism of parliamentarism, the full implementation of the constitutional principle of democracy in Russian is impossible.