From the 2000s, several African heads of state chose to modify their constitutions or simply to change them in order to stay in power. The Republic of Guinea is no exception. The President of the Republic adopted a new Constitution during a very controversial and violent double poll on March 22, 2020. This article analyzes the consequences of a constitutional change in Guinea on the electoral framework, political alternation and respect for democratic principles. How does the new Constitution help to topple political changeover, strengthen the strengthening of executive power and increase the enslavement of electoral institutions? Through an empirical analysis, this article reports on changes in electoral practice, democratic decline, the instrumentalization of the fundamental norm and the political instability that results from the change of constitution. It is based on a comparison of fundamental texts and an analysis of the evolution of the dynamics of social and political representations of the country.