His father was a freedom fighter and the Chief Minister of Bihar and his elder brother Mrigendra Pratap Singh was the Finance minister and speaker of the Jharkhand Legislative Assembly.

[2] Singh joined Jana Sangh in the state of Bihar as an associate of Raghubar Das, former Chief Minister of Jharkhand.

[6] In the 2015 Bihar Legislative Assembly election, he lost his seat to Mohammad Nawaz Alam of the RJD.

He won his seat back in the 2020 Bihar Legislative Assembly election on a BJP ticket supported by NDA defeating his nearest rival of MGB with an impressive margin.

He was appointed a Cabinet Minister in the Seventh Nitish Kumar ministry for the first time.