The article discusses the evolution of constitutional solutions concerning the, issue of political groups. The subject of the analysis includes successive Polish constitutions, beginning with the March Constitution1. At the same time the development of statutory, regulations referring to the functioning of political parties is shown. These Polish regulations, are aligned with the European tendency to constitutionalize political parties. Although, Poland experienced a delay compared to the countries of Western Europe, as a result of the, nondemocratic system of the Polish People’s Republic, the principle of political pluralism has, been the key principle underpinning the system of government found in the Constitution of, the Republic of Poland since December 1989.