October 6 Bypolls 2026: Full List of 6 Seats in Assam, Tamil Nadu, Puducherry and West Bengal
Six constituencies will vote in by-elections on October 6, 2026: five Assembly seats in Tamil Nadu, Puducherry and West Bengal, plus Assam’s Nagaon Lok Sabha seat. Counting is scheduled for October 9.
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Assembly
West Bengal
70-Rejinagar
Assembly
West Bengal
210-Nandigram
Assembly
Assam
09-Nagaon
Lok Sabha
This is the complete constituency list published by the Election Commission.
Important spelling note
The Election Commission's official notification uses Madurantakam (SC).
Some references may use the spelling “Maduranthakam”, but Madurantakam is the spelling used in the ECI election schedule and is therefore preferable for election reporting and SEO metadata tied to the official constituency name.
October 6 Bypoll Schedule
The Election Commission announced the following common timetable for the six constituencies:
Election Event
Date
Gazette notification
September 9, 2026
Last date for nominations
September 16, 2026
Scrutiny of nominations
September 17, 2026
Last date for withdrawal
September 19, 2026
Polling
October 6, 2026
Counting of votes
October 9, 2026
Election process to be completed by
October 11, 2026
As of October 3, 2026, the October 6 polling schedule remains in place, with campaigning continuing in the constituencies. Recent reporting from Tamil Nadu and West Bengal also continues to identify October 6 as polling day.
Why Are These Bypolls Being Held?
All six vacancies listed by the Election Commission arose following the resignation of the elected representative.
The ECI identifies the vacancies as follows.
Madurantakam (SC), Tamil Nadu
The 35-Madurantakam (SC) Assembly constituency became vacant following the resignation of Maragatham Kumaravel.
Madurantakam is one of two Tamil Nadu Assembly constituencies voting on October 6.
Dharapuram (SC), Tamil Nadu
The 101-Dharapuram (SC) Assembly constituency became vacant following the resignation of P. Sathyabama.
Both Madurantakam and Dharapuram are constituencies reserved for Scheduled Castes.
Thattanchavady, Puducherry
The 09-Thattanchavady Assembly constituency became vacant following the resignation of N. Rangasamy.
It is the only Puducherry constituency included in this round of by-elections.
Rejinagar, West Bengal
The 70-Rejinagar Assembly constituency became vacant following the resignation of Humayun Kabir, according to the Election Commission.
Rejinagar and Nandigram are the two West Bengal seats voting on October 6.
Nandigram, West Bengal
The 210-Nandigram Assembly constituency became vacant following the resignation of Suvendu Adhikari.
Nandigram is among the more closely watched contests because of the constituency's prominent place in West Bengal politics.
Nagaon Lok Sabha, Assam
Unlike the other five seats, Nagaon is not an Assembly by-election.
It is a Lok Sabha Parliamentary Constituency.
The Election Commission says the 09-Nagaon Parliamentary Constituency became vacant following the resignation of Pradyut Bordoloi.
The election will therefore choose a Member of Parliament, while voters in the other five constituencies are electing members of their respective Legislative Assemblies.
How Many Seats Are Voting on October 6?
The total is six:
1 Lok Sabha seat
5 Assembly seats
The state-wise distribution is:
Assam — 1 Lok Sabha seat
Tamil Nadu — 2 Assembly seats
West Bengal — 2 Assembly seats
Puducherry — 1 Assembly seat
The Election Commission itself describes the schedule as bye-elections to five Assembly constituencies and one Parliamentary constituency.
Why Nagaon Should Not Be Listed With the Assembly Seats
This distinction is particularly important in headlines and social-media graphics.
Nagaon should be written as:
Nagaon Lok Sabha constituency — Assam
not simply as another Assembly constituency alongside Madurantakam, Dharapuram, Thattanchavady, Rejinagar and Nandigram.
The five Assembly seats elect MLAs to state or Union Territory legislatures, while Nagaon elects an MP to the Lok Sabha.
EVMs and VVPATs to Be Used
The Election Commission says Electronic Voting Machines and Voter Verifiable Paper Audit Trail systems — EVMs and VVPATs — will be used at all polling stations in the six by-elections.
The Commission said adequate numbers of machines had been made available for conducting the elections.
What Identification Can Voters Carry?
The ECI says the Electoral Photo Identity Card, or EPIC, is the principal identification document for voters.
However, voters whose names are on the electoral roll can also use specified alternative photo-identification documents at the polling station.
The Commission's list includes:
Aadhaar card;
MGNREGA job card;
bank or post-office passbook carrying a photograph;
eligible health-insurance or Ayushman Bharat health card;
driving licence;
PAN card;
NPR smart card;
Indian passport;
pension document with photograph;
specified government, PSU or public-company employee identity cards;
official identity cards issued to MPs, MLAs or MLCs; and
UDID card for persons with disabilities.
Possession of an identity document does not by itself create voting eligibility; a voter's eligibility is tied to inclusion in the applicable electoral roll.
When Were the Electoral Rolls Published?
According to the Election Commission, the final electoral rolls used for the constituencies were published on different dates earlier in 2026:
Madurantakam (SC): February 23
Dharapuram (SC): February 23
Thattanchavady: February 14
Rejinagar: February 28
Nandigram: February 28
Nagaon Parliamentary Constituency: February 10
The Commission also said continuous updating of the electoral rolls was permitted up to the nomination-related deadline under applicable rules.
Model Code of Conduct
The Election Commission said the Model Code of Conduct came into force immediately after the bye-election announcement in the districts containing the constituencies concerned, subject to the Commission's rules governing by-elections.
The Model Code regulates the conduct of political parties and governments during the election period and is intended to prevent the misuse of official machinery or other unfair advantages.
Candidates With Criminal Cases Must Disclose Information
The ECI has also reiterated its disclosure rules concerning candidates with criminal antecedents.
Candidates covered by those requirements must publish information about their criminal cases on three occasions during the campaign period.
Political parties selecting such candidates must also disclose the relevant information and explain their selection in accordance with Election Commission directions.
The information is also intended to be available through ECINET's Know Your Candidates facility.
A criminal case or charge should not be described as a conviction unless a court has actually convicted the person.
Why Nandigram Is Closely Watched
Among the six seats, Nandigram carries substantial political symbolism because of its recent history in West Bengal politics.
The October 6 vote was required after the seat became vacant following Suvendu Adhikari's resignation. The ECI's official notification lists the resignation as the reason for the vacancy.
The constituency is therefore likely to attract attention beyond its immediate impact on the composition of the state Assembly.
However, a by-election result in one constituency should not automatically be treated as a statewide verdict.
Rejinagar Adds Another West Bengal Contest
West Bengal voters will simultaneously vote in Rejinagar.
Recent campaigning there confirms the October 6 date remains active as parties make their final appeals to voters ahead of polling.
The presence of two West Bengal constituencies means results from the state are likely to be closely compared, but the demographic and political conditions in Rejinagar and Nandigram differ and each result should be assessed separately.
Tamil Nadu Has Two Bypolls
Tamil Nadu will vote in:
35-Madurantakam (SC) and 101-Dharapuram (SC).
The two contests have drawn particular attention as political parties campaign ahead of the October 6 polling date. Recent reporting from Madurantakam confirms active campaigning remains underway.
Again, the official constituency spelling for publication is Madurantakam.
Puducherry Has One Seat
Puducherry's contest is for the 09-Thattanchavady Assembly constituency.
It is the only Union Territory seat included in this October 6 election round.
When Will Results Be Declared?
The Election Commission has fixed Friday, October 9, 2026, for counting of votes across all six constituencies.
The Commission has also set October 11 as the deadline by which the election process must be completed.
That does not necessarily mean every result will take until October 11. The scheduled counting date is October 9.
October 6 Bypolls at a Glance
Polling date: October 6, 2026
Day: Tuesday
Counting date: October 9, 2026
Total constituencies: 6
Lok Sabha seats: 1
Assembly seats: 5
States/UT involved: Assam, Tamil Nadu, West Bengal, Puducherry
Voting system: EVM with VVPAT
Election completion deadline: October 11, 2026
Complete Seat List to Remember
For readers looking simply for the confirmed Election Commission list, the October 6 bypolls are:
Nagaon Lok Sabha — Assam
Madurantakam (SC) Assembly — Tamil Nadu
Dharapuram (SC) Assembly — Tamil Nadu
Thattanchavady Assembly — Puducherry
Rejinagar Assembly — West Bengal
Nandigram Assembly — West Bengal
What Happens Next?
Campaigning is now in its final stage ahead of the October 6 vote.
The next major milestones are:
October 6: Voting
October 9: Counting and scheduled declaration of results
October 11: ECI deadline for completion of the election process
Unless the Election Commission issues a subsequent modification for a particular constituency, these are the dates voters should follow.
Latest Verified Position
As of October 3, 2026, the Election Commission's current election information continues to list bye-elections for five Assembly constituencies in Tamil Nadu, Puducherry and West Bengal and one Parliamentary constituency in Assam.
The complete official list is Madurantakam (SC), Dharapuram (SC), Thattanchavady, Rejinagar, Nandigram and Nagaon Lok Sabha.
Polling is scheduled for October 6 and counting for October 9.
Frequently Asked Questions
How many by-elections will be held on October 6, 2026?
Six constituencies are included: five Assembly constituencies and one Lok Sabha constituency.
Which seats are voting on October 6?
Madurantakam (SC), Dharapuram (SC), Thattanchavady, Rejinagar, Nandigram and Nagaon.
Is Nagaon an Assembly by-election?
No. Nagaon in Assam is a Lok Sabha Parliamentary Constituency. The other five contests are Assembly by-elections.
Which Tamil Nadu seats have bypolls?
Madurantakam (SC) and Dharapuram (SC).
Which West Bengal seats have bypolls?
Rejinagar and Nandigram.
Which Puducherry constituency is voting?
Thattanchavady Assembly constituency.
When is voting?
Polling is scheduled for Tuesday, October 6, 2026.
When will votes be counted?
Counting is scheduled for Friday, October 9, 2026.
Will EVMs and VVPATs be used?
Yes. The Election Commission says EVMs and VVPATs will be used at polling stations in these by-elections.
Is the Tamil Nadu constituency called Madurantakam or Maduranthakam?
The ECI's official election schedule uses Madurantakam (SC), so that spelling is preferable in election reporting.
Bottom Line
Six constituencies vote on October 6, 2026: five Assembly seats (Madurantakam SC, Dharapuram SC, Thattanchavady, Rejinagar, Nandigram) and one Lok Sabha seat (Nagaon, Assam).
Counting is scheduled for October 9. All vacancies arose from resignations. EVMs and VVPATs will be used.
The Rajatheertha Team publishes news, explainers, guides and updates across India and the world. Our coverage follows Rajatheertha's editorial, verification and corrections standards.
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