Nirmali

The geographic coordinates of Nirmali Assembly constituency are: 26°20'07.4"N 86°47'20.8"E. This constituency falls in Supaul district of Bihar and in the Koshi region. Nirmali shares its borders with four other Assembly constituencies. Other Bihar Assembly constituencies adjacent to Nirmali are: Laukaha, Pipra, Triveniganj, Chattapur. This constituency shares an inter-state border with Nepal.

There were a total of 303564 registered voters on the electoral rolls for the 2025 Assembly election in Nirmali Assembly constituency, of which 160271 were male, 143292 female and 1 of the third gender. In the 2020 Assembly elections, there were a total of 296989 registered voters, of which 153412 were male, 143575 female and 2 from the third gender. In the 2015 Assembly elections, there were a total of 269512 registered voters, of which 139771 were male, 129740 female and 37 from the third gender. In 2010 elections, there were a total of 218447 registered voters in this constituency, of which 114666 were male and 103781 female and 17 from the third gender.

The number of service voters in this Assembly constituency was 162 in 2020, 1 in 2015, and 0 in 2010.

The electorate gender ratio (number of female voters per 1000 male voters) in this constituency in 2025 was 894, in 2020 it was 936, 928 in 2015, and 905 in 2010.

Nirmali Assembly constituency will go to the polls in Phase 2 of the 2025 Bihar Assembly elections on Tuesday, November 11, 2025. The counting of votes is on Friday, November 14, 2025.

In the 2020 state Assembly elections, this seat voted in Phase 3 on Saturday, November 7, 2020 and the results were declared on Tuesday, November 10, 2020.

In the 2015 state Assembly elections, this seat voted in Phase 5 on Thursday, November 5, 2015 and the results were declared on Sunday, November 8, 2015.

In the 2010 polls, this constituency voted in Phase 1 on Thursday, October 21, 2010 and the results were declared on Wednesday, November 24, 2010.

Assembly constituency no.41. Nirmali comprises of the following areas of Supaul district in the Koshi region of Bihar: CD Blocks Nirmali, Raghopur & Saraigarh Bhaptiyahi

This constituency covers an approximate area of 497.34 square kilometers and the geographic coordinates of Nirmali is: 26°20'07.4"N 86°47'20.8"E.

A total of four Assembly constituencies in the state of Bihar share borders with Nirmali constituency, which are: Laukaha, Pipra, Triveniganj, Chattapur. This constituency shares an inter-state border with Nepal.

According to data released by the Election Commission of India, in the 2025 Bihar Assembly elections, the estimated voter turnout in this Nirmali constituency was 73.08%. In 2020, this seat registered a turnout of 63.19%, while it was 62.16% in 2015, and 59.73% in 2010.

In the 2020 Bihar Assembly elections, Aniruddha Prasad Yadav of JDU won in this constituency beating Yadubansh Kumar Yadav of RJD by a margin of 43922 votes which was 23.44% of the total votes cast. In 2015, Anirudh Prasad Yadav of JDU was the winner in this seat beating Ram Kumar Roy of BJP by a margin of 23951 votes which was 14.3% of the total votes polled in the constituency. In the 2010 Assembly elections, Aniruddha Prasad Yadav of JDU won this seat defeating Vijay Kumar Gupta of INC by a margin of 46010 votes which was 35.27% of the total votes polled for the seat.

In the 2020 Bihar Assembly elections, Aniruddha Prasad Yadav of JDU had a vote share of 49.33% in this seat. In the 2015 Assembly elections, Anirudh Prasad Yadav of JDU got a vote share of 47.54% , In the 2010 Assembly elections, Aniruddha Prasad Yadav of JDU got a vote share of 53.77% in Nirmali.