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166. Jamalpur is one of the 70 Assembly (Vidhan Sabha) constituencies in Bihar. This constituency is located in the Bhagalpur region. Bihar is located in the East region of India. This seat can be classified as: Rural and falls in the Munger district of Bihar. The reservation status of this constituency is: General. 166. Jamalpur Assembly constituency is part of the 28. Munger (General) Lok Sabha constituency and can be classified as Rural.


Location

The geographic coordinates of Jamalpur Assembly constituency are: 25°13'16.3"N 86°29'26.5"E. This constituency falls in Munger district of Bihar and in the Bhagalpur region. Jamalpur shares its borders with four other Assembly constituencies. Other Bihar Assembly constituencies adjacent to Jamalpur are: Munger, Tarpur, Jamai, Suryagarha. This constituency shares an inter-state border with .

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Jamalpur Assembly election results

2020
PartyParty votes polledVotes %Candidate name
INC57,19637.65%
Ajay Kumar Singh
Winner
Margin:
4,432 (2.918%)
Winner
JDU52,76434.73%Shailesh Kumar
LJP14,6439.64%Durgesh Kumar Singh
BSP4,3832.89%Subodh Tanti
IND3,2812.16%Pankaj Kumar
IND2,6501.74%Dolly Kumari
NOTA2,0721.36%Nota
IND1,8821.24%Pappu Yadav
JAPL1,8401.21%Mahesh Yadav
IND1,8111.19%Dhirendra Kumar
2015
2010

Demographic profile

In the 2020 Assembly elections, there were a total of 322147 registered voters, of which 174796 were male, 145521 female and 1818 from the third gender. In the 2015 Assembly elections, there were a total of 296356 registered voters, of which 163199 were male, 133146 female and 258 from the third gender. In 2010 elections, there were a total of 255815 registered voters in this constituency, of which 141421 were male and 114394 female and 615 from the third gender.

The number of service voters in this Assembly constituency was 12 in 2020, 11 in 2015, and 0 in 2010.

The electorate gender ratio (number of female voters per 1000 male voters) in this constituency in 2020 was 833, 816 in 2015, and 809 in 2010.

Poll dates

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.


Extent

Assembly constituency no.166. Jamalpur comprises of the following areas of Munger district in the Bhagalpur region of Bihar: CD Blocks Jamalpur & Dharhara; Gram Panchayats Teliyadih, Naki, Bahira, Agrahan, Badhouna, Gobadda, Kouriya, Baijalpur, Muderi, Rataitha & Barui of Kharagpur CD Block

This constituency covers an approximate area of 455.38 square kilometers and the geographic coordinates of Jamalpur is: 25°13'16.3"N 86°29'26.5"E.

A total of four Assembly constituencies in the state of Bihar share borders with Jamalpur constituency, which are: Munger, Tarpur, Jamai, Suryagarha. This constituency shares an inter-state border with .

Voter turnout

According to data released by the Election Commission of India, In 2020, this seat registered a turnout of 46.39%, while it was 49.7% in 2015, and 44.86% in 2010.

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Total voters

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Victory margin

In the 2020 Bihar Assembly elections, Ajay Kumar Singh of INC won in this constituency beating Shailesh Kumar of JDU by a margin of 4432 votes which was 2.92% of the total votes cast. In 2015, Shailesh Kumar of JDU was the winner in this seat beating Himanshu Kunvar of LJP by a margin of 15476 votes which was 10.51% of the total votes polled in the constituency. In the 2010 Assembly elections, Shailesh Kumar of JDU won this seat defeating Sadhana Devi of LJP by a margin of 21142 votes which was 18.42% of the total votes polled for the seat.

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Winner vote share (%)

In the 2020 Bihar Assembly elections, Ajay Kumar Singh of INC had a vote share of 37.65% in this seat. In the 2015 Assembly elections, Shailesh Kumar of JDU got a vote share of 45.68% , In the 2010 Assembly elections, Shailesh Kumar of JDU got a vote share of 42.12% in Jamalpur.

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Suryagarha

First Published: April 18, 2024, 05:40 IST

Last Updated: October 8, 2025 at 01:13 PM IST

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166. Jamalpur

CONSTITUENCY DETAILS
Reservation status:General
Constituency type:Rural
State:Bihar
District(s):Munger
Region (India):East
Region (State):Bhagalpur
Lok Sabha constituency:Munger
2025 ASSEMBLY ELECTIONS
Total voters:337866
Male voters:180621
Female voters:157234
Third gender voters:11
Electorate gender ratio:871
Poll phase:1
Poll date:November 6, 2025
Results (Counting of votes):November 14, 2025

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Assembly cons. Results

Cons. name202020152010
Valmiki Nagar
JDU
IND
JDU
Ramnagar
BJP
BJP
BJP
Narkatiaganj
BJP
INC
BJP
Bagaha
BJP
BJP
JDU
Lauriya
BJP
BJP
IND
Nautan
BJP
BJP
JDU
Chanpatia
BJP
BJP
BJP
Bettiah
BJP
INC
BJP
Sikta
CPIMLL
JDU
IND
Raxaul
BJP
BJP
BJP