Artykuł recenzowany / peer-reviewed articleThe study is an attempt to describe and analyse the first constitutional act of independent Finland. Th e Constitution Act of 1919 defined the Finnish political system. Although it was an object of ideological arguments (monarchist vs. republican tradition), its provisions, and especially the strong position of the president as an executive power with legislative competences, resulted from a compromise. Despite that, the classical division into three powers was introduced into the Finnish political and legal system. The act was not ideal, yet at that stage in the history of Finland it was an expected result of a compromise with strong constitutional foundation for the political and legal progress...