At first, Kunga Nima Lepcha was the member of the ruling party, Sikkim Democratic Front (SDF).
In 20 April 2013, Kunga Nima Lepcha was elected to the president of SPCC after his predecessor, Nar Bahadur Bhandari's secession.
[1] However, in March 2014, Kunga Nima Lepcha seceded from SPCC[2] and joined Sikkim Krantikari Morcha (SKM) which was led by Prem Singh Tamang (P. S. Golay).
In 2014 Sikkim Legislative Assembly election, he stood as the SKM candidate from Shyari and won the seat.
He was appointed to the Minister of Human Resource Development, Law, Legislative & Parliamentary affairs and Land, Revenue and Disaster management in P. S. Golay Cabinet.