Bypolls on October 6 for Two Tamil Nadu Seats and One Puducherry Seat
The Election Commission has announced bye-elections for two Assembly constituencies in Tamil Nadu and one constituency in Puducherry, with voting scheduled for October 6, 2026.
The Tamil Nadu constituencies going to the polls are Madurantakam and Dharapuram, while the Puducherry bypoll will be held in Thattanchavady.
Votes are scheduled to be counted on October 9.
Tamil Nadu and Puducherry Bypoll Schedule 2026
| Stage | Date |
|---|---|
| Start of nominations | September 9, 2026 |
| Last date for nominations | September 16, 2026 |
| Polling | October 6, 2026 |
| Counting of votes | October 9, 2026 |
Seats Going to Bypolls
| State/UT | Assembly Constituency |
|---|---|
| Tamil Nadu | Madurantakam |
| Tamil Nadu | Dharapuram |
| Puducherry | Thattanchavady |
Why Are the Tamil Nadu Seats Vacant?
The two Tamil Nadu constituencies became vacant following the resignations of MLAs Maragatham Kumaravel and P. Sathyabama.
Both had been elected on AIADMK tickets before subsequently resigning and joining the ruling Tamilaga Vettri Kazhagam.
The bypolls will therefore attract political attention because they provide an early electoral test following the state's 2026 Assembly election.
Why Is Thattanchavady Going to a Bypoll?
The Thattanchavady seat in Puducherry became vacant after Chief Minister N. Rangasamy, who had won from both Thattanchavady and Mangalam in the Assembly election, resigned from Thattanchavady and retained Mangalam.
The October contest will determine who represents Thattanchavady for the remainder of the Assembly term.
Other Bypolls Scheduled for October 6
The October 6 election schedule is not limited to Tamil Nadu and Puducherry.
Assembly bypolls are also scheduled in Nandigram and Rejinagar in West Bengal, while the Nagaon Lok Sabha constituency in Assam is also set to vote.
Why the Tamil Nadu Contests Will Be Watched
Bye-elections are often influenced by local candidate strength, constituency-specific issues and turnout patterns. However, the two Tamil Nadu contests could also be interpreted as an early measure of political sentiment following the recent Assembly election.
Political parties are likely to use the contests to test organization, voter mobilization and messaging.
Election Process
Electronic Voting Machines and Voter Verifiable Paper Audit Trail systems are expected to be used at polling stations as part of the election process.
The Model Code of Conduct becomes applicable in the relevant areas according to Election Commission instructions once the election schedule is announced.
What Happens Next?
- Political parties will begin announcing or finalizing candidates.
- Nominations begin on September 9.
- The nomination process will continue until September 16.
- Campaigning will intensify ahead of the October 6 vote.
- Votes will be counted on October 9.
Key Takeaway
The Madurantakam, Dharapuram and Thattanchavady bypolls will be closely monitored not only for their constituency-level results but also for what they indicate about political momentum in Tamil Nadu and Puducherry following the 2026 Assembly elections.