Martam–Rumtek Assembly constituency

Martam–Rumtek Assembly constituency is one of the 32 assembly constituencies of Sikkim a north east state of India. Martam-Rumtek is part of Sikkim Lok Sabha constituency. This Constituency is reserved for Scheduled Tribes (ST: Bhutia, Lepcha and Sherpa).

Assembly by-election 2019
In 2019 Sikkim Legislative Assembly election, Dorjee Tshering Lepcha (D. T. Lepcha) of former ruling SDF won in both Gnathang-Machong and Martam-Rumtek constituencies, so he relinquished Martam-Rumtek seat.

In the by-election, ruling SKM didn't send its candidate to Martam-Rumtek. Meanwhile, former SKM candidate Sonam Tshering Venchungpa moved to opposition BJP, and SKM supported him. In addition, D. T. Lepcha had already moved to BJP in August. Former ruling SDF participated in the Sikkim Legislative Assembly election as the opposition for the first time in 25 years. Opposition SRP sent its candidate to Martam-Rumtek for the first time. Opposition INC boycotted this by-election.

As the result, Sonam Tshering Venchungpa of BJP defeated his nearest rival Nuk Tshering Bhutia of SDF.