AIADMK bypoll rout at Maduranthakam, Dharapuram heaps pressure on Palaniswami
Synopsis
AIADMK has now lost both Maduranthakam and Dharapuram — seats it once held — to its own former legislators fighting under the TVK banner. The third-place finishes have cracked open a factional battle, with the Velumani-Shanmugam camps demanding a general council meeting and a possible rethink on Sasikala and Dhinakaran. For Palaniswami, the margin for error is shrinking fast.
Key Takeaways
AIADMK finished third in both Maduranthakam and Dharapuram bypolls, losing seats it previously held.
Both constituencies were won by former AIADMK legislators Maragatham Kumaravel and P Sathyabama , now contesting under the Tamilaga Vettri Kazhagam (TVK) banner.
25 of AIADMK's 47 MLAs had earlier defied the party whip; six subsequently resigned and joined the TVK.
The S P Velumani and C Ve Shanmugam factions are demanding a general council meeting and reconciliation with T T V Dhinakaran and V K Sasikala .
The losses extend a streak of electoral reverses spanning the 2021 Assembly elections , Lok Sabha polls, and local body elections.
AIADMK General Secretary Edappadi K Palaniswami is facing intensifying internal pressure after his party finished third in both the Maduranthakam and Dharapuram bypolls on 10 October 2026, surrendering two seats it had previously held and laying bare fractures within the leadership. The defeats have given rival factions fresh ammunition to demand structural changes in the party's functioning and its approach to electoral alliances.
What Went Wrong in the Bypolls
Both seats were captured by former AIADMK legislators who had crossed over to the Tamilaga Vettri Kazhagam (TVK). Maragatham Kumaravel, who had polled 69,284 votes for AIADMK in Maduranthakam during the Assembly elections, and P Sathyabama, who had won Dharapuram with 81,100 votes, both returned to the Assembly under the TVK banner after resigning their seats and switching parties. The AIADMK nominated Kanitha Sampath in Maduranthakam and Bhanumathi in Dharapuram — neither could breach the frontrunners.
Dharapuram's loss stings particularly hard. According to political observers, the constituency was widely viewed within the AIADMK as an achievable win, making the third-place finish doubly damaging to the party's confidence.
The Defection Backdrop
The bypoll results cannot be read in isolation. They are a direct consequence of a crisis that broke open after the Assembly elections, when Palaniswami refused to back the TVK in forming the government. As many as 25 of the party's 47 MLAs defied the party whip and voted in favour of the TVK government. Six AIADMK legislators subsequently resigned their Assembly seats and formally joined the TVK — namely Kumaravel, Sathyabama, S Jayakumar of Perundurai, Isakki Subbiah of Ambasamudram, C Vijayabaskar of Viralimalai, and M R Vijayabhaskar of Karur.
Their electoral success in the bypolls sends a signal that defection need not cost a legislator their constituency base — a calculation that could weigh on other dissatisfied AIADMK legislators, political analysts noted. Whether more departures follow will depend on how Palaniswami manages the next few weeks.
Rival Factions Seize the Moment
Against this backdrop, the camps of S P Velumani and C Ve Shanmugam have called for a general council meeting to review the bypoll losses and broader party direction. Both factions favour reconciliation with estranged leaders, including T T V Dhinakaran and V K Sasikala, arguing that reunification is essential to rebuilding the AIADMK's electoral base. Palaniswami has so far resisted such overtures, but the latest results narrow his room to manoeuvre.
A Pattern of Electoral Setbacks
The Maduranthakam and Dharapuram losses are not aberrations — they extend a losing streak that includes the 2021 Assembly elections, subsequent Lok Sabha elections, and local body polls. Each defeat has chipped away at cadre morale and reinforced the perception that the party's current strategic direction is not delivering results. Notably, this is the first time the party has finished as low as third in constituencies it once held outright.
What Palaniswami Must Do Next
For Palaniswami, the immediate priorities are threefold: stemming further defections, containing the Velumani-Shanmugam challenge, and rebuilding confidence among grassroots cadres. How he responds to demands for a general council meeting and the broader push for reconciliation with Sasikala and Dhinakaran could define the AIADMK's trajectory heading into the next electoral cycle. The pressure for a leadership review is now unlikely to recede without a credible political response.
Point of View
Suggesting the AIADMK's brand still works, just not under its current management. The factional demands for a Sasikala-Dhinakaran reconciliation have been dismissed before, but with a demonstrated defection-to-victory pathway now on record, fence-sitters inside the legislature have real political cover to act. Palaniswami's refusal to call a general council meeting risks looking like an evasion of accountability — exactly the narrative his internal rivals need.
NationPress
10 Oct 2026
Frequently Asked Questions
Why did AIADMK lose the Maduranthakam and Dharapuram bypolls?
AIADMK finished third in both bypolls on 10 October 2026, losing to former party legislators Maragatham Kumaravel and P Sathyabama who had defected to the Tamilaga Vettri Kazhagam (TVK). The losses reflect both the impact of MLA defections and growing dissatisfaction with party leadership under General Secretary Edappadi K Palaniswami.
Who won the Maduranthakam and Dharapuram bypolls?
Maragatham Kumaravel won Maduranthakam and P Sathyabama won Dharapuram, both contesting under the TVK banner after resigning their AIADMK-held seats. They had originally won these constituencies for the AIADMK in the Assembly elections.
What internal challenge does Palaniswami now face within AIADMK?
The S P Velumani and C Ve Shanmugam factions are pressing for a general council meeting to review the bypoll defeats and are pushing for reconciliation with estranged leaders T T V Dhinakaran and V K Sasikala. The factional pressure has intensified because of the string of electoral losses since 2021.
How many AIADMK MLAs defected to TVK?
Six AIADMK legislators resigned their Assembly seats and joined the TVK, including Kumaravel, Sathyabama, S Jayakumar, Isakki Subbiah, C Vijayabaskar, and M R Vijayabhaskar. Additionally, 25 of the party's 47 MLAs had earlier voted in favour of the TVK government in defiance of the party whip.
What is the significance of the bypoll results for other AIADMK legislators?
Political analysts say the results demonstrate that switching to the TVK need not cost a legislator their constituency base, which could embolden other dissatisfied AIADMK legislators to consider a similar move. Whether more defections follow will depend on how Palaniswami responds to demands for a leadership review and reconciliation.
