Constitutional legislation and practice generally proceed from the principle the legislative (representative) authority by virtue of their election, are answerable to the people alone. At the same time, within the framework of parliamentary control procedures, they act as active participants in assessment the effectiveness of other government institutions, thereby contributing to an increase in the overall efficiency of the public authority system. This necessitates the legal formalization of the efficiency principle within the legislative branch, through its incorporation into relevant federal and region legislation.

The purpose of the study is to identify possible approaches to assessing the effectiveness of the activities of legislative (representative) public authorities in the subjects of the Russian Federation.

The use of general scientific research methods, including analysis and synthesis, the formal legal method, and methods of interpretation of law made it possible to identify five efficiency criteria related to parliamentary activity: the effectiveness of legislative work; the effectiveness of work with voters; the effectiveness of parliamentary control; the effectiveness of the organization of the work of parliamentary associations; the effectiveness of the work of the legislative body. Proposals have been made to improve the current legislation related to the legal registration and implementation of the principle of efficiency in the system of legislative (representative) authority.