Four former AIADMK ministers and senior leaders formally joined the ruling Tamilaga Vettri Kazhagam (TVK) at the party's headquarters in Chennai on 7 June 2025, delivering another significant blow to the principal opposition party as it continues to haemorrhage leaders following its poor showing in the April 23 Assembly elections. The inductions were carried out in the presence of TVK General Secretary N. Anand and General Secretary for Election Campaign Management Aadhav Arjuna.

Who Joined TVK

The four leaders who crossed over are former ministers and ex-MLAs Udumalai K. Radhakrishnan, M.C. Sampath, Kadambur C. Raju, and N.R. Sivapathi. All four had contested in the recent Assembly elections and lost. Udumalai Radhakrishnan was defeated in the Udumalpet constituency, M.C. Sampath finished third in Cuddalore, and Kadambur Raju lost in Kovilpatti — outcomes that reflect the AIADMK's broader electoral collapse across Tamil Nadu.

The Deepening Crisis Within AIADMK

This is among the most consequential defections from the AIADMK since the formation of the Vijay-led TVK government. The crisis first broke into the open when 25 AIADMK MLAs defied the party whip and backed Chief Minister C. Joseph Vijay during a confidence motion in the Assembly. The rebellion exposed deep fractures within the party's ranks. Although the rebel legislators subsequently reconciled with AIADMK General Secretary Edappadi K. Palaniswami, the reconciliation has failed to stem the outflow of leaders and workers.

Four rebel legislators had earlier resigned from the AIADMK and joined TVK, setting the stage for the wave of defections that has followed. Notably, district-level office-bearers, former legislators, and grassroots functionaries have continued to cross over in the weeks since.

A Pattern of Defections

Saturday's development follows a similar episode on 29 May, when more than 300 AIADMK members joined TVK at its Panaiyur headquarters. That group included former ministers Vellamandi Natarajan and Anandan, as well as former MLAs Natraj and Sadhan Prabhakar. This is the third such incident in as many weeks, underscoring the scale of the opposition's organisational challenge. Among the earliest high-profile figures to switch sides was former AIADMK veteran K.A. Sengottaiyan, who aligned with Vijay well before the elections and later assumed a key role in the TVK government.

What This Means for Tamil Nadu Politics

Political observers view the sustained migration of AIADMK leaders to TVK as a clear indicator of the ruling party's expanding influence in the state. For the AIADMK, the challenge is twofold: arresting the organisational haemorrhage while rebuilding a credible opposition identity ahead of future electoral contests. Critics argue that without a coherent post-election strategy, the party risks a structural decline rather than a temporary setback. The coming weeks will test whether Palaniswami can consolidate his grip on the party before further defections erode its base.