[1] Bordumsa–Diyun is one of the relatively new constituencies in Arunachal Pradesh, covering Diyun and Bordumsa administrative circles.The area is unique in its diversity, including indigenous Chakma, Singpho and Tangsa communities, along with a significant population of migrants from other parts of India.

After 1987, due to political and demographic changes, it gained more localized representation through restructuring, ultimately leading to its establishment as a separate constituency.

This allowed it to address its unique needs and better represent the diverse communities in Diyun and Bordumsa.

Bordumsa and Diyun are revenue circles and together constitute form the constituency.

The 11th Assembly Election of Arunachal Pradesh was conducted on 19 April 2024 and the result was declared on 2 June 2024 in which Nikh Kamin of Nationalist Congress Party came out as the front runner and will be representing 49th Bordumsa-Diyun Constituency at the state Assembly.