Pawan Kumar Chamling resigned as CM after 2019 Sikkim Legislative Assembly election as former member Prem Singh Tamang's Sikkim Krantikari Morcha party formed the government by winning 17 seats out of 32. SDF party won the remaining 15 seats. But in August 2019, 10 MLAs quit his party to join the Bharatiya Janata Party and in the same month two other legislators joined Sikkim Krantikari Morcha. Thus making Pawan Kumar Chamling the only MLA of his party.BJP now main opposition party in Sikkim even without winning a single seat10 SDF legislators switch over to BJPTen SDF MLAs join BJP: Sikkim may be headed towards Arunachal Pradesh route, as mass crossovers leave ex-CM in the lurch
