Chhatapur

The geographic coordinates of Chhatapur Assembly constituency are: 26°20'52.8"N 86°59'57.1"E. This constituency falls in Supaul district of Bihar and in the Koshi region. Chhatapur shares its borders with three other Assembly constituencies. Other Bihar Assembly constituencies adjacent to Chhatapur are: Nirmali, Triveniganj, Narpatganj. This constituency shares an inter-state border with Nepal.

There were a total of 333086 registered voters on the electoral rolls for the 2025 Assembly election in Chhatapur Assembly constituency, of which 175828 were male, 157253 female and 5 of the third gender. In the 2020 Assembly elections, there were a total of 310035 registered voters, of which 162458 were male, 147566 female and 11 from the third gender. In the 2015 Assembly elections, there were a total of 263253 registered voters, of which 139616 were male, 123629 female and 32 from the third gender. In 2010 elections, there were a total of 212216 registered voters in this constituency, of which 112814 were male and 99402 female and 27 from the third gender.

The number of service voters in this Assembly constituency was 217 in 2020, 8 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 908, 885 in 2015, and 881 in 2010.

Chhatapur 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.45. Chhatapur comprises of the following areas of Supaul district in the Koshi region of Bihar: CD Blocks Basantpur & Chhatapur.

This constituency covers an approximate area of 523.74 square kilometers and the geographic coordinates of Chhatapur is: 26°20'52.8"N 86°59'57.1"E.

A total of three Assembly constituencies in the state of Bihar share borders with Chhatapur constituency, which are: Nirmali, Triveniganj, Narpatganj. 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 Chhatapur constituency was 74.43%. In 2020, this seat registered a turnout of 65.85%, while it was 65.79% in 2015, and 64.42% in 2010.

In the 2020 Bihar Assembly elections, Neeraj Kumar Singh of BJP won in this constituency beating Vipin Kumar Singh of RJD by a margin of 20635 votes which was 10.21% of the total votes cast. In 2015, Niraj Kumar Singh of BJP was the winner in this seat beating Jahur Alam of RJD by a margin of 9292 votes which was 5.37% of the total votes polled in the constituency. In the 2010 Assembly elections, Neeraj Kumar Singh of JDU won this seat defeating Akeel Ahmad of RJD by a margin of 23730 votes which was 17.36% of the total votes polled for the seat.

In the 2020 Bihar Assembly elections, Neeraj Kumar Singh of BJP had a vote share of 46.39% in this seat. In the 2015 Assembly elections, Niraj Kumar Singh of BJP got a vote share of 43.71% , In the 2010 Assembly elections, Neeraj Kumar Singh of JDU got a vote share of 48.93% in Chhatapur.