Includes more than 900 articles (more than 130 are devoted to the history of political parties, 127 describe the activities of the print media of leading political parties, the rest belong to the category of personalities, political biographies of leaders and prominent functionaries of political parties). The annexes contain lists of the Central Committee of the six leading political parties in Russia at the end of the 19th - beginning of the 20th centuries. Addressed to social scientists, teachers and university students, current politicians, as well as everyone interested in the political history of Russia.