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Assembly constituency 37 · Bihar · SC

Rajnagar is assembly constituency number 37 in Bihar, in Madhubani district, and one of the segments of the Jhanjharpur Lok Sabha seat. In the 2025 election Sujeet Kumar of the Bharatiya Janata Party won with 56.8% of the vote, 42,185 votes ahead of Bishnu Deo Mochi (RJD).

Request data for this seat All Bihar seats
Rajnagar · 2025AC 37
  1. 01
    Sujeet Kumar
    BJP
    1,08,362
    56.79%
  2. 02
    Bishnu Deo Mochi
    RJD
    66,177
    34.68%
  3. 03
    Surendra Kumar Das
    JNSRJP
    5,669
    2.97%
  4. 04
    Rampari Devi
    AJPP
    3,568
    1.87%
  5. 05
    Maheshwar Paswan
    BRCTP
    1,838
    0.96%
  6. 2 other candidates · 2,297 votesNOTA · 2,889 (1.51%)

Margin 42,185 votes · 22.11% of valid votes

3,13,288
Registered electors
2025 election
60.9%
Turnout
+8.4 pts vs 2020
42,185
Victory margin
22.1% of valid votes
Nov 2025 · candidate-wise result

All 7 candidates, ranked by votes. Vote share is of the 1,90,800 valid votes, NOTA included.

Rajnagar 2025 assembly election result
#CandidatePartyVotesVote share
1Sujeet KumarMale · 30 yrs · SCBJP1,08,362
56.79%
2Bishnu Deo MochiMale · 55 yrs · SCRJD66,177
34.68%
3Surendra Kumar DasMale · 60 yrs · SCJNSRJP5,669
2.97%
4Rampari DeviFemale · 57 yrs · SCAJPP3,568
1.87%
—NOTANOTA2,889
1.51%
5Maheshwar PaswanMale · 49 yrs · SCBRCTP1,838
0.96%
6Siyaram SadayMale · 46 yrs · SCBSP1,394
0.73%
7Rakesh KumarMale · 29 yrs · SCAPNJNTP903
0.47%
Past results

BJP held the seat: it also won in 2020.

0%20%40%60%2010201520202025BJP 56.8%RJD 34.7%JNSRJP 3.0%BSP 0.7%
Vote share, % of valid votes. Hover or focus a year for exact values.
2025Sujeet KumarBJP · 56.8% · margin 42,185Turnout60.9%
2020Dr. Ramprit PaswanBJP · 51.4% · margin 19,121Turnout52.5%
2015Ram Prit PaswanBJP · 46.2% · margin 6,242Turnout52.2%
2014 byeRama Watar PaswanRJP · 47.2% · margin 3,448Turnout43.9%
2010Ram Lakhan Ram RamanRJD · 38.0% · margin 2,459Turnout44.2%

General elections since the 2008 delimitation, plus bye-elections (dashed). Results from before the current boundaries are not compared.

Rajnagar bye-election, 21 Aug 2014

Turnout 43.9% · 1,24,028 of 2,82,573 electors voted

Rajnagar bye-election 2014-08-21 result
#CandidatePartyVotesVote share
1Rama Watar PaswanRJP58,495
47.16%
2Ram Prit PaswanBJP55,047
44.38%
3Utim PaswanCPI(L)2,736
2.21%
—NOTANOTA2,578
2.08%
4Lal PaswanABMP1,918
1.55%
5Ram Bilas SadaiSP1,817
1.46%
Show 1 more candidate
6Bhogendra Prasad PaswanSBP1,437
1.16%

Rajnagar result 2020

Rajnagar 2020 result
#CandidatePartyVotesVote share
1Dr. Ramprit PaswanBJP89,459
51.42%
2Ramawatar PaswanRJD70,338
40.43%
—NOTANOTA4,303
2.47%
3Rakesh KumarIndependent2,017
1.16%
4Raja Ram ChaupalVPI1,612
0.93%
5Arun Kumar MandalJGHTP1,600
0.92%
Show 5 more candidates
6Jay Bansh Kumar RamIndependent1,368
0.79%
7Santosh Kumar SumanTPLRSP1,267
0.73%
8Shiv Shankar PaswanSJDD726
0.42%
9Gopal ChoupalBRCTP688
0.40%
10Channe SadayJKiP599
0.34%

Rajnagar result 2015

Rajnagar 2015 result
#CandidatePartyVotesVote share
1Ram Prit PaswanBJP71,614
46.23%
2Ramawatar PaswanRJD65,372
42.20%
—NOTANOTA3,447
2.23%
3Maheswar RamBSP2,650
1.71%
4Rakesh KumarIndependent2,271
1.47%
5Vishnath PaswanIndependent2,029
1.31%
Show 6 more candidates
6Utim PaswanCPI(ML)(L)1,945
1.26%
7Pawas Kumar PaswanSP1,349
0.87%
8Chhedi RamIndependent1,181
0.76%
9Ram Chandra MandalNJP1,055
0.68%
10Siyaram SadaySJDD1,025
0.66%
11Umesh PaswanAKBMP967
0.62%

Rajnagar result 2010

Rajnagar 2010 result
#CandidatePartyVotesVote share
1Ram Lakhan Ram RamanRJD40,584
38.02%
2Ramprit PaswanBJP38,125
35.71%
3Ram Ekwal PaswanINC13,367
12.52%
4Ram Vilas DhangarBSP2,997
2.81%
5Mahabir PaswanIndependent2,784
2.61%
6Siya Ram SadayIJP2,226
2.09%
Show 4 more candidates
7Utim PaswanCPI(ML)(L)2,169
2.03%
8Jagdeo PaswanJD(S)2,058
1.93%
9Ganor SadaBEP(R)1,271
1.19%
10Kari PaswanSP1,175
1.10%
Map

Rajnagar outlined in orange among the other Bihar seats, coloured by the party that won each in 2025. Click any seat to open its page.

Other seats in Madhubani district

Boundaries are approximate (DataMeet, from ECI polling-station maps) and are for orientation only.

BJPJD(U)RJDLJPRVINCAIMIMOthers
Lok Sabha 2024 in this segment

Rajnagar is one of the assembly segments of Jhanjharpur. These are the EVM votes counted in this segment for the leading Jhanjharpur candidates.

  • Ramprit MandalJD(U)84,067 51.5%
  • Suman Kumar MahasethVSIP50,770 31.1%
  • Gulab YadavBSP11,603 7.1%
  • Ram Prasad RautIndependent4,588 2.8%
  • Ganga Prasad YadavIndependent2,952 1.8%

In the assembly election BJP won this seat. In the Lok Sabha vote, JD(U) led here by 33,297 EVM votes.

Open Jhanjharpur Lok Sabha result
Data & field work for this seat

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FAQ

Answers use the official Election Commission of India results for Rajnagar.

Who won the Rajnagar assembly seat in 2025?

Sujeet Kumar of the Bharatiya Janata Party (BJP) won Rajnagar in the 2025 Bihar assembly election with 1,08,362 votes, which was 56.79% of the valid votes polled.

What was the victory margin in Rajnagar?

The margin was 42,185 votes (22.11% of valid votes). The runner-up was Bishnu Deo Mochi of the Rashtriya Janata Dal with 66,177 votes.

What was the voter turnout in Rajnagar in 2025?

Turnout was 60.92%: 1,90,861 of 3,13,288 registered electors voted, across 387 polling stations. That is 8.4 points higher than in 2020.

Which Lok Sabha constituency is Rajnagar part of?

Rajnagar is an assembly segment of the Jhanjharpur Lok Sabha constituency in Bihar. In the 2024 Lok Sabha election, Ramprit Mandal got the most EVM votes in this segment.

Has Rajnagar had a bye-election?

Yes. In the bye-election on 21 Aug 2014, Rama Watar Paswan (RJP) won by 3,448 votes.

Is Rajnagar a reserved constituency?

Yes. Rajnagar is reserved for scheduled castes (sc), so only candidates from that community can contest, while all registered voters in the seat can vote.

When is the next assembly election in Rajnagar?

The Bihar assembly elected in 2025 completes its five-year term in 2030, so the next general election is due by then unless the assembly is dissolved early. The Election Commission of India announces the exact schedule.

Source: Election Commission of India, statistical reports for the Bihar assembly elections of 2025 and 2020 and 2015 and 2010 (2025 report) — detailed results and constituency data summary. Lok Sabha figures: ECI 2024 report 34, assembly segment details. Vote share is of valid votes including NOTA. Party names as listed by ECI. Candidate names are shown as filed; spelling follows ECI.

Related data

Each page below is built from an official source and credited on the page.