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By-elections · Tamil Nadu 2026

April and the by-elections: did the vote move?

Madurantakam and Dharapuram by-elections: polling 6 October 2026, counting 9 October 2026. The same seats, a new contest — every number set beside April’s as it arrives.

  • Same turnout?
  • Same person, new party?
  • Bigger or smaller margin?
  • Which party moves?
—DAYS

to polling dayPolling Tuesday 6 October · counting Friday 9 October

Madurantakam27 candidates
April 2026K. Maragatham Kumaravel
AIADMK 34.9%TVK 31.3%DMK 30.1%NTK 2.5%
By-election
Fills in as results arrive
Turnout93.4%→ —
Winner’s share34.9%→ —
Margin7,194→ —
Dharapuram22 candidates
April 2026P. Sathyabama
AIADMK 40.6%DMK 32.2%TVK 23.2%NTK 3.0%
By-election
Fills in as results arrive
Turnout89.9%→ —
Winner’s share40.6%→ —
Margin16,727→ —

Four questions to watch

1

Will as many people vote as in April?

April: 93.4% · 89.9%
Reported on polling day, 6 October 2026
2

How many votes will each April winner get under the new party?

April (AIADMK): 69,284 · 81,100
Known from the count on 9 October 2026
3

Will the winning margin be bigger or smaller?

April: 7,194 · 16,727
Known from the count on 9 October 2026
4

Which party’s share moves the most?

April: a three-way race in Madurantakam
Known from the count on 9 October 2026

April in numbers

Madurantakam · A three-way race

4.8The top three parties finished within 4.8 points.
34.9%The winner took 34.9% — about 1 vote in 3.
3.6%The margin, 7,194, was 3.6% of all votes polled.

Dharapuram · A clearer lead

8.48.4 points between first and second.
40.6%The winner took 40.6% of the votes.
8.4%The margin, 16,727, was 8.4% of all votes polled.

The five main candidates

The same person, old party and new

K. Maragatham Kumaravel

K. Maragatham Kumaravel

K. Maragatham Kumaravel won Madurantakam in April for the AIADMK. The by-election ballot lists the same person as a TVK candidate.

AIADMK69,284(34.9%)→TVK——
P. Sathyabama

P. Sathyabama

P. Sathyabama won Dharapuram in April for the AIADMK. The by-election ballot lists the same person as a TVK candidate.

AIADMK81,100(40.6%)→TVK——

Party by party (share of votes)

Madurantakam

April / by-election
AIADMK
34.9%
—
TVK
31.3%
—
DMK
30.1%
—
NTK
2.5%
—
CPM
—
—
All other candidates
1.2%
—

Dharapuram

April / by-election
AIADMK
40.6%
—
DMK
32.2%
—
TVK
23.2%
—
NTK
3.0%
—
CPI
—
—
All other candidates
1.0%
—

Share of votes polled (April) · Share of votes counted (by-election).

Seven seats, seven margins in April

Karur
1,821
Madurantakam
7,194
Perundurai
9,693
Ambasamudram
10,245
Dharapuram
16,727
Tiruchirappalli East
27,416
Viralimalai
62,073

Of the seven, Karur was the closest (1,821 votes) and Viralimalai the widest (62,073). Seats that vote are in orange.

All seven vacant seats

MadurantakamPolling 6 October 2026

K. Maragatham Kumaravel (AIADMK) · margin 7,194

DharapuramPolling 6 October 2026

P. Sathyabama (AIADMK) · margin 16,727

PerunduraiOn hold by court order

S. Jayakumar (AIADMK) · margin 9,693

The Madras High Court has barred a by-election here since 10 July 2026; on 1 October 2026 it reserved its orders. The election petition against the April result was dismissed on 8 September, but the court kept the bar on this seat too until it rules.

KarurOn hold by court order

M. R. Vijayabhaskar (AIADMK) · margin 1,821

The Madras High Court has barred a by-election here since 10 July 2026; on 1 October 2026 it reserved its orders. The TVK candidate who challenged the April result told the court in July that he wants to withdraw his petition; no order allowing that has been reported.

Tiruchirappalli EastOn hold by court order

C. Joseph Vijay (TVK) · margin 27,416

The Madras High Court has barred a by-election here since 10 July 2026; on 1 October 2026 it reserved its orders. An election petition by the DMK runner-up, Dr Inigo S. Irudayaraj, challenging Vijay's April win here is pending.

ViralimalaiOn hold by court order

Dr. C. Vijayabaskar (AIADMK) · margin 62,073

The Madras High Court has barred a by-election here since 10 July 2026; on 1 October 2026 it reserved its orders. An election petition against the April result is pending.

AmbasamudramOn hold by court order

Dr. Esakki Subaya (AIADMK) · margin 10,245

The Madras High Court has barred a by-election here since 10 July 2026; on 1 October 2026 it reserved its orders. An election petition against the April result is reported pending.

What appears here, and when

6 October 2026Turnout through the day
9 October 2026, from 8 AMCounting starts — round-by-round leads
9 October 2026Declared result, final comparison, data download

Quick answers

Why are only 2 of the 7 seats voting?

The Madras High Court has barred by-elections in the other five seats while it hears a case. They are added here when they vote.

What does vote share mean?

A candidate’s votes as a share of all votes polled, including NOTA.

Where do the numbers come from?

April: Election Commission Form 20. By-election: results.eci.gov.in; polling-day turnout: news reports.

How to read this comparison

April’s figuresApril’s figures are the Election Commission’s Form 20 totals for the seat. Vote share is a candidate’s votes as a share of all votes polled or counted (including NOTA).
Not like for likeA by-election and a general election are not like for like: fewer voters turn out, the candidates are different, and local issues weigh more. A change in share between the two columns is a comparison, not a forecast.
TurnoutTurnout for April is votes polled as a share of registered voters. The by-election turnout is the approximate polling-day figure as reported by news outlets, and can differ from the final count.
Same for every partyEvery party is shown the same way, in the order of its April vote.

April 2026: Election Commission of India, Form 20 and results. By-elections: Election Commission of India, results.eci.gov.in; polling-day turnout: news reports. Court status: reports of the Madras High Court hearings.

Download the data (CSV)