Madhuban

The geographic coordinates of Madhuban Assembly constituency are: 26°28'54.1"N 85°07'20.3"E. This constituency falls in Purvi Champaran district of Bihar and in the Tirhut region. Madhuban shares its borders with six other Assembly constituencies. Other Bihar Assembly constituencies adjacent to Madhuban are: Chiraia, Motihari, Pipra, Sheohar, Minapur, Sheohar. This constituency shares an inter-state border with .

There were a total of 263974 registered voters on the electoral rolls for the 2025 Assembly election in Madhuban Assembly constituency, of which 140706 were male, 123253 female and 15 of the third gender. In the 2020 Assembly elections, there were a total of 258042 registered voters, of which 136593 were male, 121428 female and 21 from the third gender. In the 2015 Assembly elections, there were a total of 233738 registered voters, of which 124684 were male, 109041 female and 11 from the third gender. In 2010 elections, there were a total of 178725 registered voters in this constituency, of which 97021 were male and 81704 female and 14 from the third gender.

The number of service voters in this Assembly constituency was 195 in 2020, 13 in 2015, and 0 in 2010.

The electorate gender ratio (number of female voters per 1000 male voters) in this constituency in 2025 was 876, in 2020 it was 889, 875 in 2015, and 842 in 2010.

Madhuban 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 2 on Sunday, October 24, 2010 and the results were declared on Wednesday, November 24, 2010.

Assembly constituency no.18. Madhuban comprises of the following areas of Purvi Champaran district in the Tirhut region of Bihar: CD Blocks Madhuban, Pakridayal & Phenhara.

This constituency covers an approximate area of 275.84 square kilometers and the geographic coordinates of Madhuban is: 26°28'54.1"N 85°07'20.3"E.

A total of six Assembly constituencies in the state of Bihar share borders with Madhuban constituency, which are: Chiraia, Motihari, Pipra, Sheohar, Minapur, Sheohar. 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 Madhuban constituency was 69.07%. In 2020, this seat registered a turnout of 59.48%, while it was 59.56% in 2015, and 57.45% in 2010.

In the 2020 Bihar Assembly elections, Rana Randhir of BJP won in this constituency beating Madan Prasad of RJD by a margin of 5878 votes which was 3.83% of the total votes cast. In 2015, Rana Randhir of BJP was the winner in this seat beating Shivajee Rai of JDU by a margin of 16222 votes which was 11.68% of the total votes polled in the constituency. In the 2010 Assembly elections, Shivjee Rai of JDU won this seat defeating Rana Randhir of RJD by a margin of 10122 votes which was 9.86% of the total votes polled for the seat.

In the 2020 Bihar Assembly elections, Rana Randhir of BJP had a vote share of 47.69% in this seat. In the 2015 Assembly elections, Rana Randhir of BJP got a vote share of 43.94% , In the 2010 Assembly elections, Shivjee Rai of JDU got a vote share of 39.43% in Madhuban.