Bahadurpur

The geographic coordinates of Bahadurpur Assembly constituency are: 26°06'07.9"N 85°57'18.7"E. This constituency falls in Darbhanga district of Bihar and in the Mithila region. Bahadurpur shares its borders with seven other Assembly constituencies. Other Bihar Assembly constituencies adjacent to Bahadurpur are: Darbhanga, Keoti, Gaighat, Kalyanpur, Hayaghat, Benipur, Darbhanga Rural. This constituency shares an inter-state border with .

There were a total of 300455 registered voters on the electoral rolls for the 2025 Assembly election in Bahadurpur Assembly constituency, of which 159635 were male, 140811 female and 9 of the third gender. In the 2020 Assembly elections, there were a total of 300009 registered voters, of which 159496 were male, 140500 female and 13 from the third gender. In the 2015 Assembly elections, there were a total of 268823 registered voters, of which 144371 were male, 124448 female and 156 from the third gender. In 2010 elections, there were a total of 226902 registered voters in this constituency, of which 123235 were male and 103667 female and 116 from the third gender.

The number of service voters in this Assembly constituency was 351 in 2020, 4 in 2015, and 0 in 2010.

The electorate gender ratio (number of female voters per 1000 male voters) in this constituency in 2025 was 882, in 2020 it was 881, 862 in 2015, and 841 in 2010.

Bahadurpur Assembly constituency will go to the polls in Phase 1 of the 2025 Bihar Assembly elections on Thursday, November 6, 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 2 on Sunday, October 24, 2010 and the results were declared on Wednesday, November 24, 2010.

Assembly constituency no.85. Bahadurpur comprises of the following areas of Darbhanga district in the Mithila region of Bihar: CD Blocks Bahadurpur & Hanuman Nagar.

This constituency covers an approximate area of 299.38 square kilometers and the geographic coordinates of Bahadurpur is: 26°06'07.9"N 85°57'18.7"E.

A total of seven Assembly constituencies in the state of Bihar share borders with Bahadurpur constituency, which are: Darbhanga, Keoti, Gaighat, Kalyanpur, Hayaghat, Benipur, Darbhanga Rural. This constituency shares an inter-state border with .

According to data released by the Election Commission of India, in the 2025 Bihar Assembly elections, the estimated voter turnout in this Bahadurpur constituency was 70.28%. In 2020, this seat registered a turnout of 59.39%, while it was 58.19% in 2015, and 50.91% in 2010.

In the 2020 Bihar Assembly elections, Madan Sahni of JDU won in this constituency beating Ramesh Choudhary of RJD by a margin of 2629 votes which was 1.48% of the total votes cast. In 2015, Bhola Yadav of RJD was the winner in this seat beating Hari Sahani of BJP by a margin of 16989 votes which was 10.91% of the total votes polled in the constituency. In the 2010 Assembly elections, Madan Sahni of JDU won this seat defeating Harinandan Yadav of RJD by a margin of 643 votes which was 0.56% of the total votes polled for the seat.

In the 2020 Bihar Assembly elections, Madan Sahni of JDU had a vote share of 38.5% in this seat. In the 2015 Assembly elections, Bhola Yadav of RJD got a vote share of 45.95% , In the 2010 Assembly elections, Madan Sahni of JDU got a vote share of 23.65% in Bahadurpur.