# Diamond Harbour Lok Sabha constituency

Diamond Harbour Lok Sabha constituency is one of the 543 Parliamentary constituencies in India. The constituency centres on Diamond Harbour in West Bengal. All the seven legislative assembly segments of No. 21 Diamond Harbour Lok Sabha constituency are in South 24 Parganas district.

## Assembly segments

As per order of the Delimitation Commission in respect of the Delimitation of constituencies in the West Bengal, Diamond Harbour Lok Sabha constituency is composed of the following legislative assembly segments from 2009:
| No | Name | District | Member | Party | 2024 Lead |
| 143 | Diamond Harbour | South 24 Parganas | Pannalal Halder | Trinamool Congress | Trinamool Congress |
| 144 | Falta | South 24 Parganas | Sankar Kumar Naskar | Trinamool Congress | Trinamool Congress |
| 145 | Satgachhia | South 24 Parganas | Mohan Chandra Naskar | Trinamool Congress | Trinamool Congress |
| 146 | Bishnupur (SC) | South 24 Parganas | Dilip Mondal | Trinamool Congress | Trinamool Congress |
| 155 | Maheshtala | South 24 Parganas | Dulal Chandra Das | Trinamool Congress | Trinamool Congress |
| 156 | Budge Budge | South 24 Parganas | Ashok Kumar Deb | Trinamool Congress | Trinamool Congress |
| 157 | Metiaburuz | South 24 Parganas | Abdul Khaleque Molla | Trinamool Congress | Trinamool Congress |

## Members of Parliament

| Year | Name | Party |
| 1952 | Kamal Basu | Communist Party of India |
| 1952 | Purnendu Sekhar Naskar | Indian National Congress |
| 1957 | Purnendu Sekhar Naskar | Indian National Congress |
| 1957 | Kansari Halder | Communist Party of India |
| 1962 | Sudhansu Bhushan Das | Indian National Congress |
| 1967 | Jyotirmoy Basu | Communist Party of India (Marxist) |
| 1971 | Jyotirmoy Basu | Communist Party of India (Marxist) |
| 1977 | Jyotirmoy Basu | Communist Party of India (Marxist) |
| 1980 | Jyotirmoy Basu | Communist Party of India (Marxist) |
| 1982^ | Amal Datta | Communist Party of India (Marxist) |
| 1984 | Amal Datta | Communist Party of India (Marxist) |
| 1989 | Amal Datta | Communist Party of India (Marxist) |
| 1991 | Amal Datta | Communist Party of India (Marxist) |
| 1996 | Samik Lahiri | Communist Party of India (Marxist) |
| 1998 | Samik Lahiri | Communist Party of India (Marxist) |
| 1999 | Samik Lahiri | Communist Party of India (Marxist) |
| 2004 | Samik Lahiri | Communist Party of India (Marxist) |
| 2009 | Somen Mitra | Trinamool Congress |
| 2014 | Abhishek Banerjee | Trinamool Congress |
| 2019 | Abhishek Banerjee | Trinamool Congress |
| 2024 | Abhishek Banerjee | Trinamool Congress |
^ by-poll

## Election Results
### General Election 2024

2024 Indian general elections: Diamond Harbour :
| Party | Party | Candidate | Votes | % | ±% |
| | AITC | Abhishek Banerjee | 1,048,230 | 68.48 | 12.33 |
| | BJP | Abhijit Das (Bobby) | 337,300 | 22.03 | 11.36 |
| | CPI(M) | Pratikur Rahaman | 86,953 | 5.68 | 0.99 |
| | ISF | Majnu Laskar | 21,139 | 1.38 | 1.38 |
| | NOTA | None of the above | 10,188 | | |
| Majority | Majority | Majority | 7,10,930 | | |
| Turnout | Turnout | Turnout | 15,30,817 | | |
| | AITC hold | AITC hold | Swing | | |

### General Election 2019

2019 Indian general elections: Diamond Harbour :
| Party | Party | Candidate | Votes | % | ±% |
| | AITC | Abhishek Banerjee | 791,127 | 56.15 | +15.82 |
| | BJP | Nilanjan Roy | 470,533 | 33.39 | +17.46 |
| | CPI(M) | Dr. Fuad Halim | 93,941 | 6.67 | −28.00 |
| | INC | Soumya Aich Roy | 19,828 | 1.41 | −3.6 |
| | BSP | Md. Goribulla Molla | 2,911 | 0.21 | |
| | SUCI(C) | Ajay Ghosh | 1,846 | 0.13 | |
| | NOTA | None of the above | 16,247 | 1.15 | |
| Majority | Majority | Majority | 320,594 | 22.76 | |
| Turnout | Turnout | Turnout | 1,409,373 | 81.98 | |
| | AITC hold | AITC hold | Swing | | |

### General Election 2014

2014 Indian general election: Diamond Harbour :
| Party | Party | Candidate | Votes | % | ±% |
| | AITC | Abhishek Banerjee | 508,481 | 40.31 | −13.25 |
| | CPI(M) | Dr. Abul Hasnat | 437,187 | 34.66 | −4.51 |
| | BJP | Abhijit Das (Bobby) | 200,858 | 15.92 | +12.36 |
| | INC | Md. Qamaruzzaman Qamar | 63,047 | 5.00 | +5.00 |
| | Independent | Ranu Mondal | 8,740 | | |
| | Independent | Nirapada Sardar | 6,634 | | |
| | Independent | Moly Mondal | 6,633 | | |
| | Independent | Sk Samim | 3,607 | | |
| | WPOI | Nazma Yasmeen | 3,272 | | |
| | BSP | Dilip Kumar Mondal | 2,892 | | |
| | SUCI(C) | Ajay Ghosh | 2,529 | | |
| | IUML | Jaynal Abedin Mondal | 1,856 | | |
| | PDS | Samir Putatunda | 1,322 | | |
| | RJP | Habibur Rahman Molla | 1,260 | | |
| | Independent | Alok Sen | 977 | | |
| | None of the Above | None Of The Above | 10,657 | 0.84 | −−− |
| Majority | Majority | Majority | 71,298 | 5.65 | −8.74 |
| Turnout | Turnout | Turnout | 12,61,296 | 81.06 | |
| | AITC hold | AITC hold | Swing | | |

### General Election 2009

General Election, 2009: Diamond Harbour :
| Party | Party | Candidate | Votes | % | ±% |
| | AITC | Somen Mitra | 564,612 | 53.56 | +20.36 |
| | CPI(M) | Samik Lahiri | 412,923 | 39.17 | −12.43 |
| | BJP | Abhijit Das (Bobby) | 37,542 | 2.88 | |
| | Independent | Ranu Mondal | 9,966 | 0.77 | |
| | SP | Sk Nasiruddin | 7,486 | 0.57 | |
| | NCP | Harunal Rashid Kaji | 7,187 | 0.55 | |
| | BSP | R.N. Chaudhury | 4,989 | 0.38 | |
| | Independent | Jahangir Sk | 4,282 | 0.32 | |
| | ABP | Shyamal Mondal | 2,664 | 0.20 | |
| | Independent | Mohan Chandra Naskar | 2,535 | 0.19 | |
| Majority | Majority | Majority | 151,689 | 14.39 | |
| Turnout | Turnout | Turnout | 1,054,112 | 80.94 | |
| | AITC gain from CPI(M) | AITC gain from CPI(M) | Swing | | |

### General Election 2004

General Election, 2004: Diamond Harbour :
| Party | Party | Candidate | Votes | % |
| | CPI(M) | Samik Lahiri | 430,590 | 51.60 |
| | AITC | Sougata Roy | 277,106 | 33.20 |
| | INC | Maya Ghosh | 92,807 | 11.10 |
| | Independent | Nabakumar Betal | 8427 | 1.00 |
| | NCP | Somashree Betal | 5559 | 0.70 |
| | INL | Palas Karmakar | 4989 | 0.50 |
| | Independent | Ranu Mondal | 5559 | 0.50 |
| | BSP | Moly Mondal | 4455 | 0.40 |
| | Independent | Bipro Das Adhikari | 4001 | 0.40 |
| | Bangla Congress | Mala Banerjee | 3663 | 0.30 |
| | SP | Sheikh Nazrul Islam | 3411 | 0.30 |
| | Independent | Sk Samim | 2592 | 0.20 |
| Majority | Majority | Majority | 153,784 | 18.4% |
| Turnout | Turnout | Turnout | 8,35,475 | 75.8% |
| | CPI(M) hold | CPI(M) hold | Swing | |

### General Election 1999

General Election, 1999: Diamond Harbour :
| Party | Party | Candidate | Votes | % |
| | CPI(M) | Samik Lahiri | 402,761 | 47.10 |
| | AITC | Sardar Amjad Ali | 331,598 | 39.27 |
| | INC | Daulat Ali Sheikh | 106,344 | 12.59 |
| | Independent | Ranu Mondal | 1165 | 0.14 |
| | Independent | Bhola Sardar | 1088 | 0.13 |
| | Independent | Somashree Betal | 814 | 0.10 |
| | Independent | Moly Gomes | 572 | 0.07 |
| Majority | Majority | Majority | 71,163 | 8.3% |
| Turnout | Turnout | Turnout | 8,58,209 | 75.5% |
| | CPI(M) hold | CPI(M) hold | Swing | |

### General Election 1998

General Election, 1998: Diamond Harbour :
| Party | Party | Candidate | Votes | % |
| | CPI(M) | Samik Lahiri | 405,048 | 45.97 |
| | AITC | Kakoli Ghosh Dastidar | 344,092 | 39.05 |
| | INC | Maya Ghosh | 124,335 | 14.11 |
| | Independent | Shahadat Hossain Jamadar | 3210 | 0.36 |
| | Independent | Ranu Mondal | 2229 | 0.25 |
| | Independent | Ranendra Kumar Gupta | 1550 | 0.18 |
| | Independent | Sambhu Mondal | 640 | 0.07 |
| Majority | Majority | Majority | 60,956 | 6.8% |
| Turnout | Turnout | Turnout | 8,96,052 | 79.8% |
| | CPI(M) hold | CPI(M) hold | Swing | |

### General Election 1996

General Election, 1996: Diamond Harbour :
| Party | Party | Candidate | Votes | % |
| | CPI(M) | Samik Lahiri | 411,844 | 47.37 |
| | INC | Sardar Amjad Ali | 389,318 | 44.77 |
| | BJP | Dulal Chaudhuri | 55,518 | 6.38 |
| | MUL | Ruhulamine Mollick | 4365 | 0.50 |
| | SS | Arjun Kapoor | 3381 | 0.39 |
| | Independent | Gyanananda Samanta | 2139 | 0.25 |
| | Independent | Samima Sk | 2010 | 0.23 |
| Majority | Majority | Majority | 22,526 | 2.5% |
| Turnout | Turnout | Turnout | 8,89,735 | 80.5% |
| | CPI(M) hold | CPI(M) hold | Swing | |

### General Elections 1951-2004

Diamond Harbour Lok Sabha constituency was a double-member constituency in 1951 and 1957. Since then it is a single-member constituency. Most of the contests were multi-cornered. However, only winners and runners-up are mentioned below:
| Year | Winner | | Runner-up |
| | | Party | Candidate | Party |
| 1951 | Kamal Basu | Communist Party of India | | |
| | Purnendu Sekhar Naskar | Indian National Congress | Mahabir Prosad | Indian National Congress |
| 1957 | Kansari Halder | Communist Party of India | | |
| | Purnendu Sekhar Naskar | Indian National Congress | Kamal Basu | Communist Party of India |
| 1962 | Sudhansu Bhusan Das | Indian National Congress | Kamal Basu | Communist Party of India |
| 1967 | Jyotirmoy Basu | Communist Party of India (Marxist) | Sudhansu Bhusan Das | Indian National Congress |
| 1971 | Jyotirmoy Basu | Communist Party of India (Marxist) | Amar Prosad Bandopadhyay | Indian National Congress |
| 1977 | Jyotirmoy Basu | Communist Party of India (Marxist) | Biren Mahanti | Indian National Congress |
| 1980 | Jyotirmoy Basu | Communist Party of India (Marxist) | A K M Ishaque | Indian National Congress |
| 1984 | Amal Datta | Communist Party of India (Marxist) | Sudhendu Mundle | Indian National Congress |
| 1989 | Amal Datta | Communist Party of India (Marxist) | Maya Ghosh | Indian National Congress |
| 1991 | Amal Datta | Communist Party of India (Marxist) | Maya Ghosh | Indian National Congress |
| 1996 | Samik Lahiri | Communist Party of India (Marxist) | Amjad Ali Sardar | Indian National Congress |
| 1998 | Samik Lahiri | Communist Party of India (Marxist) | Kakoli Ghosh Dastidar | All India Trinamool Congress |
| 1999 | Samik Lahiri | Communist Party of India (Marxist) | Amjad Ali Sardar | All India Trinamool Congress |
| 2004 | Samik Lahiri | Communist Party of India (Marxist) | Saugata Roy | All India Trinamool Congress |