West Bengal Election 2026: Diamond Harbour Assembly constituency in West Bengal's South 24 Parganas district is one of the most politically significant and closely tracked urban-rural mixed seats in the state.
Falling under the Diamond Harbour Lok Sabha segment, the constituency reflects both coastal geography and strong political mobilisation with a long electoral history dating back to 1952, it has evolved into a Trinamool Congress stronghold in recent cycles, while earlier decades saw frequent shifts between CPI(M), Congress and regional parties.
Diamond Harbour Election Result 2026 Live Updates
The Live updates for Diamond Harbour in the 2026 Assembly elections will begin once counting starts at 8:00 AM IST on 4 May 2026. Results will be tracked through the Election Commission of India (ECI) portal and major news outlets. Early trends from postal ballots will set the tone, followed by EVM rounds that often reshape margins in this highly competitive constituency.
Diamond Harbour Assembly Elections 2026 Winner
The final winner will be announced only after all counting rounds are completed and historically, Diamond Harbour has seen dominant wins but also significant swings in vote share, making the 2026 outcome dependent on booth-level performance and turnout variations across rural and semi-urban areas.
Diamond Harbour Elections Results 2026: New MLA Name
The official MLA name for 2026 will be declared after final verification by the Election Commission and given past data, the seat has mostly remained under Trinamool Congress control since 2011, though earlier cycles saw strong competition from CPI(M) and BJP.
Diamond Harbour Assembly Elections 2026: Result Date
The result for Diamond Harbour will be declared on 4 May 2026, in line with West Bengal's Assembly election counting schedule. Results are typically announced the same day unless recounts or technical verifications delay final certification. The Diamond Harbour Assembly Elections 2026 were held on 29 April 2026 during Phase 2 of polling.
Diamond Harbour West Bengal Assembly Elections 2026: Key Candidate List
Dipak Kumar Halder (BJP)
Goutam Bhattacharya (INC)
Samar Naiya (INC alliance field reference)
Panna Lal Halder (CPI(M))
Bikash Chandra Mondal (AITC)
Yeamin Laskar (BSP)
Diamond Harbour Assembly Elections 2026 Winner Victory Margin
Victory margins in Diamond Harbour have shown wide variation. In 2021, the margin crossed 16,000 votes, while in earlier Assembly cycles it stayed within 7-10% vote swing bands and this indicates a constituency that can shift significantly depending on turnout and party alignment.
Diamond Harbour Assembly Elections 2021 Results
In 2021, Pannalal Halder of AITC won with 98,478 votes (43.7%), defeating BJP's Dipak Kumar Halder, who secured 81,482 votes andCPI(M)'s Pratik Ur Rahaman polled 38,719 votes, finishing third in a multi-cornered contest.
Diamond Harbour Assembly Elections 2021 Winner
Pannalal Halder (AITC) emerged as the winner in 2021, consolidating Trinamool Congress dominance in the constituency and his victory reaffirmed the party's strong organisational presence and voter base across rural and semi-urban pockets.
Diamond Harbour Election Results 2021 Live: Who Won the West Bengal Assembly Elections 2021?
In the 2021 West Bengal Assembly election for Diamond Harbour, Pannalal Halder of the Trinamool Congress (AITC) won the seat with 98,478 votes, securing about 43.7% vote share. He defeated BJP candidate Dipak Kumar Halder, who polled 81,482 votes, while CPI(M)'s Pratik Ur Rahaman got 38,719 votes. The victory margin was 16,996 votes, confirming TMC's strong hold in the constituency.
| Candidate | Party | Votes | Vote Share |
| Pannalal Halder (Winner) | Trinamool Congress (TMC) | 1,12,396 | 53.71% |
| Dipak Kumar Haldar | Bharatiya Janata Party (BJP) | 71,873 | 34.35% |
| Sk. Aminul Islam | Indian National Congress (INC) | 19,606 | 9.37% |
| NOTA | None of the Above | 2,109 | 1.01% |
| Others | Independent / Smaller Parties | 3,300+ | 1.56% |
Diamond Harbour Assembly Elections 2016 Results
In 2016, Dipak Kumar Halder (AITC) won with 96,833 votes, defeating CPI(M)'s Abul Hasnat, who secured 81,796 votes and the margin stood at approximately 7.6%, marking a stable TMC consolidation phase.
Diamond Harbour Assembly Elections 2016 Winner
Dipak Kumar Halder of the Trinamool Congress secured victory in 2016, strengthening the party's foothold in the constituency and continuing its rising influence after 2011.
Diamond Harbour Assembly Election Live Results 2016: Who Won the West Bengal Assembly Elections 2016?
In the 2016 West Bengal Assembly elections for Diamond Harbour, Dipak Kumar Halder of the Trinamool Congress (AITC) won the seat with 96,833 votes, securing a vote share of 48.6% and he defeated CPI(M) candidate Dr. Abul Hasnat, who received 81,796 votes. The victory margin stood at 15,037 votes (7.6%), confirming a strong TMC hold over the constituency during that election cycle.
| Candidate | Party | Votes | Vote Share |
| Dipak Kumar Halder (Winner) | All India Trinamool Congress (AITC) | 96,833 | 47.18% |
| Dr. Abul Hasnat | Communist Party of India (Marxist) CPI(M) | 81,796 | 39.84% |
| Sk. Sahajahan Ali | Indian National Congress (INC) | 19,312 | 9.41% |
| NOTA | None of the Above | 2,215 | 1.08% |
| Others | Independent / Smaller Parties | 5,000+ | 2.49% |
Diamond Harbour Voter Turnout Percentage in West Bengal Assembly Elections 2026
Diamond Harbour has consistently recorded high turnout levels, often ranging between 80% and 89% in Assembly elections. In 2026, turnout is expected to remain close to this historical average and reflecting strong voter participation across rural and urban pockets.
Diamond Harbour West Bengal Assembly Total Registered Voters
In the Diamond Harbour Assembly constituency, the total number of registered voters stood at around 2,65,214 in the 2024 electoral roll, up from 2,55,132 in 2021. This steady rise reflects population growth and urban expansion and the electorate includes rural, semi-urban and coastal communities across South 24 Parganas district.
Diamond Harbour Was Established In?
The Diamond Harbour Assembly constituency was established in 1952, making it one of the older electoral segments in West Bengal and since its formation, it has participated in all Assembly elections and reflects the changing political landscape of post-independence Bengal.
Diamond Harbour Constituency Pincode
The primary PIN code for Diamond Harbour is 743331, covering the main urban and surrounding rural areas in South 24 Parganas. Adjacent localities may fall under nearby postal zones within the same district with this constituency identified as Constituency No. 143.
Diamond Harbour West Bengal Assembly Election Result Live Update: Where to Check the Live Result on ECI
Voters can check the assembly election results live update on the official website of the Election Commission of India, results.eci.gov.in/ This remains the most authoritative and authentic source for verified data.
Disclaimer: This article uses historical election data and trends. Final 2026 results will be officially declared by the Election Commission of India.