This article analyzes the origin and extinction of the Revisionist Party of State of Amazonas (PRAM), that existed from 1905 to 1910. The purpose of this work is to advance the understanding of the social composition, proposals and electoral activity of the minority parties that existed in Brazil during the First Republic. First, the electoral law instituted in 1904 (Rosa e Silva Law), which introduced the cumulative vote, was a stimulus for the formation of the PRA. Second, the majority of leaders and candidates of this party were former members of the situationism. At the time of their passage through the government field, they played little prominent roles in public administration. Third, the extinction of this party resulted from a reform that added new municipalities to the 1st electoral district of Amazonas. This expansion was unfavorable to the PRAM because its candidates did not have a relevant support base beyond the state capital.