Jhajha

The geographic coordinates of Jhajha Assembly constituency are: 24°51'25.6"N 86°25'18.8"E. This constituency falls in Jamui district of Bihar and in the Bhagalpur region. Jhajha shares its borders with five other Assembly constituencies. Other Bihar Assembly constituencies adjacent to Jhajha are: Tarapur, Belhar, Chakai, Sikandra, Jamai. This constituency shares an inter-state border with .

There were a total of 338667 registered voters on the electoral rolls for the 2025 Assembly election in Jhajha Assembly constituency, of which 177077 were male, 161580 female and 10 of the third gender. In the 2020 Assembly elections, there were a total of 316049 registered voters, of which 167003 were male, 149044 female and 2 from the third gender. In the 2015 Assembly elections, there were a total of 303537 registered voters, of which 162406 were male, 141130 female and 48 from the third gender. In 2010 elections, there were a total of 240437 registered voters in this constituency, of which 129524 were male and 110913 female and 14 from the third gender.

The number of service voters in this Assembly constituency was 358 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 912, in 2020 it was 892, 869 in 2015, and 856 in 2010.

Jhajha 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.242. Jhajha comprises of the following areas of Jamui district in the Bhagalpur region of Bihar: CD Blocks Lakshmipur, Jhajha & Gidhaur.

This constituency covers an approximate area of 727.11 square kilometers and the geographic coordinates of Jhajha is: 24°51'25.6"N 86°25'18.8"E.

A total of five Assembly constituencies in the state of Bihar share borders with Jhajha constituency, which are: Tarapur, Belhar, Chakai, Sikandra, Jamai. 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 Jhajha constituency was 71.74%. In 2020, this seat registered a turnout of 61.58%, while it was 53.95% in 2015, and 51.62% in 2010.

In the 2020 Bihar Assembly elections, Damodar Rawat of JDU won in this constituency beating Rajendra Prasad of RJD by a margin of 1679 votes which was 0.86% of the total votes cast. In 2015, Rabindra Yadav of BJP was the winner in this seat beating Damodar Rawat of JDU by a margin of 22086 votes which was 13.49% of the total votes polled in the constituency. In the 2010 Assembly elections, Damodar Rawat of JDU won this seat defeating Binod Prasad Yadav of RJD by a margin of 10204 votes which was 8.22% of the total votes polled for the seat.

In the 2020 Bihar Assembly elections, Damodar Rawat of JDU had a vote share of 39.55% in this seat. In the 2015 Assembly elections, Rabindra Yadav of BJP got a vote share of 40.04% , In the 2010 Assembly elections, Damodar Rawat of JDU got a vote share of 38.74% in Jhajha.