Rastriya Swatantra Party (RSP) candidate Amresh Kumar Singh leads by more than 8,500 votes in Sarlahi Constituency No. 4.
According to the latest update published on the Election Commission's website, Singh has so far received 25,083 votes.
Nepali Congress candidate Gagan Thapa is trailing at 16,340 votes.
Singh is ahead of Thapa by 8,743 votes.
CPN-UML candidate Amanish Kumar Yadav has received 6,734 votes.
Janamat Party's Rakesh Kumar Mishra has received 1,299 votes.