Sharma was a Member of Indian Parliament from Sitamarhi constituency. He was a member of
Rashtriya Lok Samata Party, a splinter political party that emerged from
Janata Dal (United). He was considered as a trusted aide of
Upendra Kushwaha, and was serving as the
Chief Whip of RLSP in
Lok Sabha. He was also the parliamentary board president of the party. In 2019, RLSP under Upendra Kushwaha aligned with
Mahagathbandhan (Bihar). Sharma accused Upendra Kushwaha of selling party tickets without consulting him and avoiding the political workers. He caused a split in the RLSP by floating his own faction called Rashtriya Lok Samata Party (Ramkumar Sharma). ==References==