[5] Singh was the Indian National Congress candidate in the 2001 Assam Legislative Assembly election for Udharbond.

[2] On 27 May 2011, Singh was inducted into the Third Tarun Gogoi cabinet, as one of four ministers of state with independent charge.

[8] On 3 March 2012, Singh along with an additional chief secretary visited the Bhuvan Valley Tea estate, at the behest of Chief Minister Tarun Gogoi due to 14 tea works dying, possibly of starvation.

[10] On 29 June 2012, Singh along with irrigation minister Ardhendu Kumar Dey visited several flooded areas in Barak Valley by boat.

[14] In August 2013, after Chief Minister Tarun Gogoi asked for the revival of Assam Flying Club, the sports commissioner submitted minutes of meetings to Singh.

[17] On 26 April 2015, Singh, while speaking at a function in the premises of the flag station here today, said his ministry "has laid stress on development of better infrastructure for augmenting the fleet of bus services and also modernization, keeping in view the increasing number of commuters and their expectations of better services from the ASTC".

He was defeated by BJP candidate and the incumbent MLA of Udharbond Mihir Kanti Shome by 8606 votes.

[19] In the 2021 Assam Legislative Assembly election, Singh was again the Indian National Congress for Udharbond.

He enjoys working for the upliftment of the weaker sections of society and he attended a three-month conference in Singapore related to Trade Union activities.