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37. Rajnagar is one of the 70 Assembly (Vidhan Sabha) constituencies in Bihar. This constituency is located in the Mithila region. Bihar is located in the East region of India. This seat can be classified as: Rural and falls in the Madhubani district of Bihar. The reservation status of this constituency is: Scheduled Caste. 37. Rajnagar Assembly constituency is part of the 7. Jhanjharpur (General) Lok Sabha constituency and can be classified as Rural.


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  • Slide 1Temple in Navlakha Palace campus also known as Rajnagar Palace, is a royal Brahmin palace in the town of Rajnagar, Bihar. Bihar tourism site. Copyright (c) Sanket_Mishra / Shutterstock
  • Slide 2Temple in Navlakha Palace campus also known as Rajnagar Palace, is a royal Brahmin palace in the town of Rajnagar, Bihar. Bihar tourism site. Copyright (c) Sanket_Mishra / Shutterstock
  • Slide 3Kali Mandir of Rajnagar in Navlakha Palace campus also known as Rajnagar Palace, is a royal Brahmin palace in the town of Rajnagar, Bihar, India. October 31, 2023. Copyright (c) Sanket_Mishra / Shutterstock

Location

The geographic coordinates of Rajnagar Assembly constituency are: 26°22'02.3"N 86°09'25.2"E. This constituency falls in Madhubani district of Bihar and in the Mithila region. Rajnagar shares its borders with eight other Assembly constituencies. Other Bihar Assembly constituencies adjacent to Rajnagar are: Babubarhi, Khajauli, Benipatti, Bisfi, Madhubani, Jhanjharpur, Phulparas, Laukaha. This constituency shares an inter-state border with .

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Rajnagar Assembly election results

2020
PartyParty votes polledVotes %Candidate name
BJP89,45951.42%
Dr. Ramprit Paswan
Winner
Margin:
19,121 (10.991%)
Winner
RJD70,33840.43%Ramawatar Paswan
NOTA4,3032.47%Nota
IND2,0171.16%Rakesh Kumar
VPI1,6120.93%Raja Ram Chaupal
JGHTP1,6000.92%Arun Kumar Mandal
IND1,3680.79%Jay Bansh Kumar Ram
TPLRSP1,2670.73%Santosh Kumar Suman
SJDD7260.42%Shiv Shankar Paswan
BRCTP6880.4%Gopal Choupal
2015
2010

Demographic profile

In the 2020 Assembly elections, there were a total of 321521 registered voters, of which 168798 were male, 152318 female and 382 from the third gender. In the 2015 Assembly elections, there were a total of 296751 registered voters, of which 157997 were male, 138741 female and 152 from the third gender. In 2010 elections, there were a total of 241735 registered voters in this constituency, of which 130911 were male and 110824 female and 97 from the third gender.

The number of service voters in this Assembly constituency was 23 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 2020 was 902, 878 in 2015, and 847 in 2010.

Poll dates

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 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 1 on Thursday, October 21, 2010 and the results were declared on Wednesday, November 24, 2010.


Extent

Assembly constituency no.37. Rajnagar comprises of the following areas of Madhubani district in the Mithila region of Bihar: CD Blocks Rajnagar & Andhratharhi.

This constituency covers an approximate area of 317.66 square kilometers and the geographic coordinates of Rajnagar is: 26°22'02.3"N 86°09'25.2"E.

A total of eight Assembly constituencies in the state of Bihar share borders with Rajnagar constituency, which are: Babubarhi, Khajauli, Benipatti, Bisfi, Madhubani, Jhanjharpur, Phulparas, Laukaha. 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 52.3%, while it was 52.22% in 2015, and 44.16% in 2010.

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Total voters

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Victory margin

In the 2020 Bihar Assembly elections, Dr. Ramprit Paswan of BJP won in this constituency beating Ramawatar Paswan of RJD by a margin of 19121 votes which was 10.99% of the total votes cast. In 2015, Ram Prit Paswan of BJP was the winner in this seat beating Ramawatar Paswan of RJD by a margin of 6242 votes which was 4.03% of the total votes polled in the constituency. In the 2010 Assembly elections, Ram Lakhan Ram Raman of RJD won this seat defeating Ramprit Paswan of BJP by a margin of 2459 votes which was 2.3% of the total votes polled for the seat.

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Winner vote share (%)

In the 2020 Bihar Assembly elections, Dr. Ramprit Paswan of BJP had a vote share of 51.42% in this seat. In the 2015 Assembly elections, Ram Prit Paswan of BJP got a vote share of 46.23% , In the 2010 Assembly elections, Ram Lakhan Ram Raman of RJD got a vote share of 38.02% in Rajnagar.

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

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

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37. Rajnagar

CONSTITUENCY DETAILS
Reservation status:Scheduled Caste
Constituency type:Rural
State:Bihar
District(s):Madhubani
Region (India):East
Region (State):Mithila
Lok Sabha constituency:Jhanjharpur
2025 ASSEMBLY ELECTIONS
Total voters:339401
Male voters:177479
Female voters:161896
Third gender voters:26
Electorate gender ratio:912
Poll phase:2
Poll date:November 11, 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