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Diamond Harbour, West Bengal — Lok Sabha Election Results

Compiled by EveryElectionResult.com's data team · Last updated 2026-08-30

Diamond Harbour (West Bengal) was won by Abhishek Banerjee (All India Trinamool Congress) at the 2019 Lok Sabha general election, with a margin of 320,594 votes over Nilanjan Roy. This page covers every Lok Sabha general election in Diamond Harbour, West Bengal, from 1951 to 2019.

Full Election History, 1951–2019

Election Winner Party Votes Vote Share Runner-up Margin
1951 Basu Kamal Communist Party of India 120,982 17.8% Naskar Purnendu Sekhar (Indian National Congress) 2,311 (0.3 pts)
1957 Kansari Halder Communist Party of India 247,785 25.4% Purnindu Sekhar Naskar (Indian National Congress) 2,519 (0.3 pts)
1962 Sudhanshu Bhushan Das Indian National Congress 152,540 47.6% Kamal Kumar Basu (Communist Party of India) 19,140 (6.0 pts)
1967 J. Basu CPI (Marxist) 196,176 51.1% S. B. Das (Indian National Congress) 70,974 (18.5 pts)
1971 Jyotirmoy Basu CPI (Marxist) 204,987 53.4% Ambar Prosad Bandopadhaya (Indian National Congress) 73,336 (19.1 pts)
1977 Jyotirmoy Basu CPI (Marxist) 267,890 70.6% Biren Mahanti (Indian National Congress) 156,404 (41.2 pts)
1980 Jyotirmoy Basu CPI (Marxist) 310,406 63.8% A.K.M. Ishaque (Congress (I)) 145,932 (30.0 pts)
1984 Amal Datta CPI (Marxist) 281,271 48.0% Sudhendu Mundle (Indian National Congress) 4,673 (0.8 pts)
1989 Amal Datta CPI (Marxist) 374,532 51.1% Maya Ghosh (Indian National Congress) 43,045 (5.9 pts)
1991 Amal Dutta CPI (Marxist) 338,884 48.1% Maya Ghosh (W) (Indian National Congress) 45,512 (6.5 pts)
1996 Samik Lahiri CPI (Marxist) 411,844 47.4% Amjad Ali Sardar (Indian National Congress) 22,526 (2.6 pts)
1998 Samik Lahiri CPI (Marxist) 405,048 46.0% Kakoli Ghosh Dastidar (West Bengal Trinamool Congress) 60,956 (6.9 pts)
1999 Samik Lahiri CPI (Marxist) 402,761 47.7% Sardar Amjad Ali (All India Trinamool Congress) 71,163 (8.4 pts)
2004 Samik Lahiri CPI (Marxist) 430,890 51.5% Saugata Roy (All India Trinamool Congress) 153,784 (18.4 pts)
2009 Somendra Nath Mitra All India Trinamool Congress 564,612 53.6% Samik Lahiri (CPI (Marxist)) 151,689 (14.4 pts)
2014 Abhishek Banerjee All India Trinamool Congress 508,481 40.3% Dr. Abul Hasnat (CPI (Marxist)) 71,298 (5.7 pts)
2019 Abhishek Banerjee All India Trinamool Congress 791,127 56.8% Nilanjan Roy (Bharatiya Janata Party) 320,594 (23.0 pts)

Full Result Breakdown by Election

1951

CandidatePartyVotesShare
Basu Kamal Communist Party of India 120,982 17.8%
Naskar Purnendu Sekhar Indian National Congress 118,671 17.4%
Prosad Mahabir Indian National Congress 98,677 14.5%
Kayal Paresh Nath Bharatiya Jana Sangh 94,208 13.9%
Ghosh Sailendra Kumar KMPP 92,291 13.6%
Koyal Bijoy Chandra Bharatiya Jana Sangh 63,335 9.3%
Das Charu Chandra Independent 27,282 4.0%
Mukherjee Jnanada Prosad Independent 26,551 3.9%
Bhattacharjee Asutosh Independent 24,666 3.6%
Pramanick Sudhindra Kumar Independent 13,480 2.0%

1957

CandidatePartyVotesShare
Kansari Halder Communist Party of India 247,785 25.4%
Purnindu Sekhar Naskar Indian National Congress 245,266 25.2%
Kamal Basu Communist Party of India 244,763 25.1%
Nalini Kanta Halder Indian National Congress 236,192 24.2%
Sushil Kumar Sardar Independent 0 0.0%

1962

CandidatePartyVotesShare
Sudhanshu Bhushan Das Indian National Congress 152,540 47.6%
Kamal Kumar Basu Communist Party of India 133,400 41.6%
Bhupal Chandra Basu Praja Socialist Party 17,501 5.5%
Tarvnat Achuta Menon Independent 17,242 5.4%

1967

CandidatePartyVotesShare
J. Basu CPI (Marxist) 196,176 51.1%
S. B. Das Indian National Congress 125,202 32.6%
S. Roy Independent 62,594 16.3%

1971

CandidatePartyVotesShare
Jyotirmoy Basu CPI (Marxist) 204,987 53.4%
Ambar Prosad Bandopadhaya Indian National Congress 131,651 34.3%
Aziz Shaik Independent 24,727 6.4%
Alisup Rahaman All India Forward Bloc 15,419 4.0%
Sudhansu Bhusan Das Congress (O) 7,413 1.9%

1977

CandidatePartyVotesShare
Jyotirmoy Basu CPI (Marxist) 267,890 70.6%
Biren Mahanti Indian National Congress 111,486 29.4%

1980

CandidatePartyVotesShare
Jyotirmoy Basu CPI (Marxist) 310,406 63.8%
A.K.M. Ishaque Congress (I) 164,474 33.8%
Jamila Khatoon Indian Union Muslim League 7,214 1.5%
Paresh Pal Independent 2,259 0.5%
Karuna Nadhan Roy Independent 1,452 0.3%
Shaik Abdul Wadud Independent 872 0.2%

1984

CandidatePartyVotesShare
Amal Datta CPI (Marxist) 281,271 48.0%
Sudhendu Mundle Indian National Congress 276,598 47.2%
Mohd. Salahuddin Indian Union Muslim League 25,695 4.4%
Parsuram Show Independent 2,465 0.4%

1989

CandidatePartyVotesShare
Amal Datta CPI (Marxist) 374,532 51.1%
Maya Ghosh Indian National Congress 331,487 45.2%
Khan Azizul Islam Indian Union Muslim League 21,984 3.0%
Dhanooram Jaiswara Bahujan Samaj Party 3,394 0.5%
Md. Ibrahim Khan Independent 1,330 0.2%
Shaikh Abdul Waduj INC(O) 570 0.1%

1991

CandidatePartyVotesShare
Amal Dutta CPI (Marxist) 338,884 48.1%
Maya Ghosh (W) Indian National Congress 293,372 41.7%
Muzaffar Khan Bharatiya Janata Party 62,219 8.8%
Liakat Ali Mondal Indian Union Muslim League 3,740 0.5%
Sattar Laskar Independent 2,863 0.4%
Chandra Sekhar Bhattacharjee HSS 1,552 0.2%
Lailunnesha (W) Independent 1,546 0.2%

1996

CandidatePartyVotesShare
Samik Lahiri CPI (Marxist) 411,844 47.4%
Amjad Ali Sardar Indian National Congress 389,318 44.8%
Dulal Chaudhuri Bharatiya Janata Party 55,518 6.4%
Ruhulamine Mollick Indian Union Muslim League 4,365 0.5%
Sanjib Chatterjee Shiv Sena 3,381 0.4%
Jahar Biswas Independent 2,139 0.2%
Nemai Naskar Independent 2,010 0.2%
Nathuni Roy Independent 936 0.1%

1998

CandidatePartyVotesShare
Samik Lahiri CPI (Marxist) 405,048 46.0%
Kakoli Ghosh Dastidar West Bengal Trinamool Congress 344,092 39.1%
Dr Maya Ghose Indian National Congress 124,335 14.1%
Sahadat Hossain Jamader Independent 3,210 0.4%
Bechu Mandal Independent 2,229 0.3%
Ranendra Kumar Gupta Independent 1,550 0.2%
Sambhu Mondal Independent 640 0.1%

1999

CandidatePartyVotesShare
Samik Lahiri CPI (Marxist) 402,761 47.7%
Sardar Amjad Ali All India Trinamool Congress 331,598 39.3%
Sk Daulat Ali Indian National Congress 106,344 12.6%
Kishor Kumar Ghosh Independent 1,165 0.1%
Gopal Roy Safai Independent 1,088 0.1%
Bitan Mondal Independent 814 0.1%
Bechu Mondal Independent 572 0.1%

2004

CandidatePartyVotesShare
Samik Lahiri CPI (Marxist) 430,890 51.5%
Saugata Roy All India Trinamool Congress 277,106 33.1%
Daulat Ali Sheikh Indian National Congress 92,859 11.1%
Sekh Nasir Uddin Independent 8,427 1.0%
Abdur Rauf Baidya Independent 5,559 0.7%
Zameerul Hasan INL 4,455 0.5%
Mainuddin Chisty Independent 4,001 0.5%
Dr. Dhiren Mondal Bahujan Samaj Party 3,664 0.4%
Bechu Mondal Independent 3,411 0.4%
Mala Banerjee JUM 2,592 0.3%
Sekh Nazrul Islam Samajwadi Party 2,139 0.3%
Amit Sundar Purkait Independent 1,437 0.2%

2009

CandidatePartyVotesShare
Somendra Nath Mitra All India Trinamool Congress 564,612 53.6%
Samik Lahiri CPI (Marxist) 412,923 39.2%
Abhijit Das Bharatiya Janata Party 37,542 3.6%
Mainuddin Chisty Independent 9,966 0.9%
Sk. Nasiruddin Samajwadi Party 7,486 0.7%
Harunal Rasid Kaji Nationalist Congress Party 7,187 0.7%
R.N. Chaudhury Bahujan Samaj Party 4,989 0.5%
Debajyoti Sengupta Independent 4,208 0.4%
Shyamal Mandal ABP 2,664 0.3%
Bechu Mondal Independent 2,535 0.2%

2014

CandidatePartyVotesShare
Abhishek Banerjee All India Trinamool Congress 508,481 40.3%
Dr. Abul Hasnat CPI (Marxist) 437,183 34.7%
Abhijit Das (Bobby) Bharatiya Janata Party 200,858 15.9%
Md. Qamruzzaman Qamar Indian National Congress 63,047 5.0%
None Of The Above Independent 10,657 0.8%
Sudip Kumar Saha Independent 8,740 0.7%
Sougata Ghosh Independent 6,634 0.5%
Sailen Sadhukhan Independent 6,633 0.5%
Bechu Mondal Independent 3,607 0.3%
Nazma Yasmeen WPOI 3,272 0.3%
Dilip Kumar Mandal Bahujan Samaj Party 2,892 0.2%
Ajay Ghosh SUCI(C) 2,529 0.2%
Jaynal Abedin Mondal IUML 1,856 0.1%
Bijan Majumder Independent 1,348 0.1%
Samir Putatunda PDS 1,322 0.1%
Habibur Rahaman Molla RJP(RJP) 1,260 0.1%
Alok Sen Independent 977 0.1%

2019

CandidatePartyVotesShare
Abhishek Banerjee All India Trinamool Congress 791,127 56.8%
Nilanjan Roy Bharatiya Janata Party 470,533 33.8%
Dr. Fuad Halim CPI (Marxist) 93,941 6.7%
Soumya Aich Roy Indian National Congress 19,828 1.4%
Subrata Bose Independent 5,555 0.4%
Md. Goribulla Molla Bahujan Samaj Party 2,911 0.2%
Prabir Sarkar Independent 2,744 0.2%
Santosh Kumar Shiv Sena 2,252 0.2%
Swarnalata Sarkar BNARP 2,018 0.1%
Ajay Ghosh SUCI(C) 1,846 0.1%

Margin Over Time

Winning margin (percentage points) at each election, coloured by the winning party's broad bloc (Congress / BJP / Left / other).

1951: Communist Party of India margin 0.3 pts 1957: Communist Party of India margin 0.3 pts 1962: Indian National Congress margin 6.0 pts 1967: CPI (Marxist) margin 18.5 pts 1971: CPI (Marxist) margin 19.1 pts 1977: CPI (Marxist) margin 41.2 pts 1980: CPI (Marxist) margin 30.0 pts 1984: CPI (Marxist) margin 0.8 pts 1989: CPI (Marxist) margin 5.9 pts 1991: CPI (Marxist) margin 6.5 pts 1996: CPI (Marxist) margin 2.6 pts 1998: CPI (Marxist) margin 6.9 pts 1999: CPI (Marxist) margin 8.4 pts 2004: CPI (Marxist) margin 18.4 pts 2009: All India Trinamool Congress margin 14.4 pts 2014: All India Trinamool Congress margin 5.7 pts 2019: All India Trinamool Congress margin 23.0 pts 1951 1957 1962 1967 1971 1977 1980 1984 1989 1991 1996 1998 1999 2004 2009 2014 2019

Trend

Diamond Harbour has been contested at 17 Lok Sabha general elections on record since 1951. Parties that have won this seat over that span: Communist Party of India, Indian National Congress, CPI (Marxist), All India Trinamool Congress.

Frequently Asked Questions

Who won Diamond Harbour in the 2019 Lok Sabha election?

Abhishek Banerjee (All India Trinamool Congress) won Diamond Harbour, West Bengal, in 2019 with 791,127 votes (56.8%), a margin of 320,594 votes over Nilanjan Roy.

Which parties have won Diamond Harbour since 1951?

Since 1951, Diamond Harbour has been won by: All India Trinamool Congress, CPI (Marxist), Communist Party of India, Indian National Congress.

What was the closest result in Diamond Harbour?

The closest result on record for Diamond Harbour was 1951, when Communist Party of India beat Indian National Congress by just 2,311 votes (0.3 percentage points).

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