The Election Commission on November 10 declared the winner of Chanpatia Assembly Constituency (AC No 07) in Pashchim Champaran district which went to polls on November 03, 2020. Umakant Singh of the Bharatiya Janata Party won the Chanpatia seat beating Indian National Congress candidate Abhishek Ranjan by a margin of 13469 votes.
In Bihar Assembly Election 2015, BJP candidate Prakash Rai won Chanpatia constituency seat with a margin of 0.3% securing 61304 votes against JD(U) candidate N N Sahi.