This paper explores the process of construction of the interconnection between ethnicity, indigeneity, and political participation in Sikkim concerning the Limbu ethnic community. It firstly discusses Limbu associations' claims for the reservation of seats for the Limbu community in the state legislative assembly, following the recognition of the group as a Scheduled Tribe in 2003. From this point on, the paper goes further back in time, and, based on archival documents, shows that the view of the lack of political representation of the Limbu as a result of ethnic discrimination is grounded in a 'uncertain' membership, which has historical roots dating back to the foundation of the kingdom. It shows that the troubled relations between the Limbu and the leading power in Sikkim in the early days of the kingdom long continued to inform their subaltern form of political membership. [ABSTRACT FROM AUTHOR]