The Election Commission on November 10 declared the winner of Bihariganj Assembly Constituency (AC No 71) in Madhepura district which went to polls on November 07, 2020. Niranjan Kumar Mehta of the Janata Dal (United) won the Bihariganj seat beating Indian National Congress candidate Subhashini Bundela Alias Subhashini Sharad Yadav by a margin of 18711 votes.
In Bihar Assembly Election 2015, JD(U) candidate Niranjan Kumar Mehta won Bihariganj constituency seat with a margin of 16.9% securing 78361 votes against BJP candidate Ravindra Charan Yadav.