Nautan

The geographic coordinates of Nautan Assembly constituency are: 26°43'03.0"N 84°27'16.6"E. This constituency falls in Paschim Champaran district of Bihar and in the Tirhut region. Nautan shares its borders with six other Assembly constituencies. Other Bihar Assembly constituencies adjacent to Nautan are: Valmiki Nagar, Lauriya, Chanpatia, Govindganj, Gopalganj, Kuchaikote. This constituency shares an inter-state border with Uttar Pradesh.

There were a total of 280808 registered voters on the electoral rolls for the 2025 Assembly election in Nautan Assembly constituency, of which 151417 were male, 129375 female and 16 of the third gender. In the 2020 Assembly elections, there were a total of 277724 registered voters, of which 149936 were male, 127767 female and 21 from the third gender. In the 2015 Assembly elections, there were a total of 243419 registered voters, of which 133859 were male, 109542 female and 148 from the third gender. In 2010 elections, there were a total of 200327 registered voters in this constituency, of which 109573 were male and 90574 female and 123 from the third gender.

The number of service voters in this Assembly constituency was 313 in 2020, 18 in 2015, and 0 in 2010.

The electorate gender ratio (number of female voters per 1000 male voters) in this constituency in 2025 was 854, in 2020 it was 852, 818 in 2015, and 827 in 2010.

Nautan 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 2 on Tuesday, November 3, 2020 and the results were declared on Tuesday, November 10, 2020.

In the 2015 state Assembly elections, this seat voted in Phase 4 on Sunday, November 1, 2015 and the results were declared on Sunday, November 8, 2015.

In the 2010 polls, this constituency voted in Phase 3 on Thursday, October 28, 2010 and the results were declared on Wednesday, November 24, 2010.

Assembly constituency no.6. Nautan comprises of the following areas of Paschim Champaran district in the Tirhut region of Bihar: CD Blocks Bairia & Nautan.

This constituency covers an approximate area of 410.69 square kilometers and the geographic coordinates of Nautan is: 26°43'03.0"N 84°27'16.6"E.

A total of six Assembly constituencies in the state of Bihar share borders with Nautan constituency, which are: Valmiki Nagar, Lauriya, Chanpatia, Govindganj, Gopalganj, Kuchaikote. This constituency shares an inter-state border with Uttar Pradesh.

According to data released by the Election Commission of India, In 2020, this seat registered a turnout of 60.19%, while it was 61.8% in 2015, and 55.96% in 2010.

In the 2020 Bihar Assembly elections, Narayan Prasad of BJP won in this constituency beating Sheikh Mohammad Kamran of INC by a margin of 25896 votes which was 15.46% of the total votes cast. In 2015, Narayan Prasad of BJP was the winner in this seat beating Baidyanath Prasad Mahto of JDU by a margin of 14335 votes which was 9.53% of the total votes polled in the constituency. In the 2010 Assembly elections, Manorma Prasad of JDU won this seat defeating Narayan Prasad of LJP by a margin of 22764 votes which was 20.31% of the total votes polled for the seat.

In the 2020 Bihar Assembly elections, Narayan Prasad of BJP had a vote share of 46.97% in this seat. In the 2015 Assembly elections, Narayan Prasad of BJP got a vote share of 44.35% , In the 2010 Assembly elections, Manorma Prasad of JDU got a vote share of 36.48% in Nautan.