Abstract: This paper is an attempt to analyze the regionalist discourse in Sikkim and how the regionalist discourse is similar or different from the nationalist discourse. Ever since Sikkim was merged with the Indian Union the regional political parties have been playing an important role in the developmental process of the state. The important feature of Sikkim politics have been rooted in the regional politics. The most remarkable point in this is the absence of the role of national political parties in the state. The present paper summarizes the role and performance of regional parties since the birth of state in 1975. It tries to bring out the study on how the regional political parties particularly Sikkim Sangram parishad (SSP) and Sikkim Democratic Front (SDF) in Sikkim have been able to mobilize the traditional communities into politics.