Kahalgaon

The geographic coordinates of Kahalgaon Assembly constituency are: 25°09'34.2"N 87°09'40.7"E. This constituency falls in Bhagalpur district of Bihar and in the Bhagalpur region. Kahalgaon shares its borders with four other Assembly constituencies. Other Bihar Assembly constituencies adjacent to Kahalgaon are: Gopalpur, Pirpainti, Dhauraiya, Nathnagar. This constituency shares an inter-state border with Jharkhand.

There were a total of 342804 registered voters on the electoral rolls for the 2025 Assembly election in Kahalgaon Assembly constituency, of which 178432 were male, 164358 female and 14 of the third gender. In the 2020 Assembly elections, there were a total of 331391 registered voters, of which 174766 were male, 156622 female and 3 from the third gender. In the 2015 Assembly elections, there were a total of 308196 registered voters, of which 162562 were male, 145627 female and 280 from the third gender. In 2010 elections, there were a total of 258106 registered voters in this constituency, of which 138803 were male and 119303 female and 99 from the third gender.

The number of service voters in this Assembly constituency was 426 in 2020, 7 in 2015, and 0 in 2010.

The electorate gender ratio (number of female voters per 1000 male voters) in this constituency in 2025 was 921, in 2020 it was 896, 896 in 2015, and 860 in 2010.

Kahalgaon 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 1 on Wednesday, October 28, 2020 and the results were declared on Tuesday, November 10, 2020.

In the 2015 state Assembly elections, this seat voted in Phase 1 on Monday, October 12, 2015 and the results were declared on Sunday, November 8, 2015.

In the 2010 polls, this constituency voted in Phase 4 on Monday, November 1, 2010 and the results were declared on Wednesday, November 24, 2010.

Assembly constituency no.155. Kahalgaon comprises of the following areas of Bhagalpur district in the Bhagalpur region of Bihar: CD Blocks Goradih & Sonhoula; Gram Panchayats Parashathdih (Shankarpur Khawas), Kodwar, Janidih, Pakkisarai, Dhanora, Maishamunda, Ekchari, Bholsar, Ogree, Shyampur & Nagar Panchayat Kahalgaon of Kahalgaon CD Block.

This constituency covers an approximate area of 414.06 square kilometers and the geographic coordinates of Kahalgaon is: 25°09'34.2"N 87°09'40.7"E.

A total of four Assembly constituencies in the state of Bihar share borders with Kahalgaon constituency, which are: Gopalpur, Pirpainti, Dhauraiya, Nathnagar. This constituency shares an inter-state border with Jharkhand.

According to data released by the Election Commission of India, in the 2025 Bihar Assembly elections, the estimated voter turnout in this Kahalgaon constituency was 73.12%. In 2020, this seat registered a turnout of 62.02%, while it was 57.48% in 2015, and 51.25% in 2010.

In the 2020 Bihar Assembly elections, Pawan Kumar Yadav of BJP won in this constituency beating Shubhanand Mukesh of INC by a margin of 42893 votes which was 20.88% of the total votes cast. In 2015, Sadanand Singh of INC was the winner in this seat beating Niraj Kumar Mandal of LJP by a margin of 21229 votes which was 11.98% of the total votes polled in the constituency. In the 2010 Assembly elections, Sadanand Singh of INC won this seat defeating Kahkashan Perween of JDU by a margin of 8935 votes which was 6.75% of the total votes polled for the seat.

In the 2020 Bihar Assembly elections, Pawan Kumar Yadav of BJP had a vote share of 56.23% in this seat. In the 2015 Assembly elections, Sadanand Singh of INC got a vote share of 36.68% , In the 2010 Assembly elections, Sadanand Singh of INC got a vote share of 33.97% in Kahalgaon.