The Election Commission on November 10 declared the winner of Hasanpur Assembly Constituency (AC No 140) in Samastipur district which went to polls on November 03, 2020. Tej Pratap Yadav of the Rashtriya Janata Dal won the Hasanpur seat beating Janata Dal (United) candidate Raj Kumar Ray by a margin of 21139 votes.
In Bihar Assembly Election 2015, JD(U) candidate Raj Kumar Ray won Hasanpur constituency seat with a margin of 20.2% securing 63094 votes against RLSP candidate Vinod Choudhary.