The first part of the textbook Comparative Political Science is devoted to the analysis of the most important theoretical concepts of this science. The second part of the textbook Comparative Political Science examines the political systems of the most developed and influential countries of the world, such as the United States of America, Great Britain, France, the Federal Republic of Germany, Japan, the People's Republic of China, and Russia. It is written on the basis of studying the works of modern American, English, French, German, Japanese, Russian political scientists.