In order to reveal the content of political pluralism, the article considers conceptual, conceptual and interpretative approaches to its definition in the context of constitutional relations with the foundations of the constitutional system, constitutional values, freedom of speech and expression. It is revealed that the absence of the term “political pluralism” in the constitutional text of Russia is made up for by its disclosure through the interpretation of the related principles of “ideological diversity”, “political diversity” and “multiparty”. It is this perspective of the study of political pluralism that helps to justify it as the basis of the constitutional system of Russia. It is noted that since freedom of speech and expression are associated primarily with political freedoms, they are most logically associated with political pluralism. It is proved that the latter implies the presence of citizens in society who have their own interests, adhere to different views on the development of the state and society and unite on this basis in groups, as well as finding a compromise between them based on common ideals and values when solving issues of national importance. The analysis of the motivational part of the decisions of the constitutional Court of the Russian Federation served to reveal the content of political pluralism. The authors concluded that the structure of political pluralism consists of political diversity, freedom of speech, freedom of expression, and political compromise. As a generalization, the authors noted that the principle of political pluralism is revealed by this body through guarantees of political diversity and the possibility of finding a compromise of political interests at the level of the Parliament. In addition, it was stressed that the principle of political diversity in a democratic state is ensured through the functioning of such institutions of direct democracy as freedom of speech, free elections, freedom of peaceful public events, the right to Association and freedom of their activities, including political parties. It is concluded that the coordination of political interests should be provided by parliaments of various levels.