In a move that could reshape Tamil Nadu’s political landscape ahead of the 2026 Assembly elections, Union Home Minister Amit Shah on Friday confirmed that the Bharatiya Janata Party (BJP) and the All India Anna Dravida Munnetra Kazhagam (AIADMK) will reunite under the National Democratic Alliance (NDA) banner. Shah, speaking in Chennai, declared that the NDA would contest the polls under the leadership of AIADMK chief Edappadi K. Palaniswami.

“AIADMK and BJP leaders have decided that AIADMK, BJP and all the alliance parties will contest the upcoming Vidhan Sabha elections in Tamil Nadu together as NDA,” Shah announced, signaling a thaw in the once-bitter relationship between the two parties.

A Rocky Past, a Strategic Present

The alliance comes after a turbulent 18-month fallout marked by personal and ideological clashes. BJP’s outgoing state chief K. Annamalai had infamously called AIADMK under EPS a “betting agent party” while taking digs at Dravidian icon C.N. Annadurai. In retaliation, AIADMK leaders labeled the BJP “waste luggage.” Yet, political necessity seems to have eclipsed past hostilities.

This rekindling is being viewed as a pragmatic move for both sides. AIADMK, weakened by successive defeats and facing the growing dominance of the DMK, is eager to avoid a political wipeout. “Going by polling performances and vote share, there is little or no chance for the AIADMK to win in 2026 even in a three- or four-cornered contest,” political analyst N. Sathiya Moorthy said to India Today.

The Bigger Picture for BJP

For the BJP, the alliance is less about immediate power and more about long-term growth in a state where its ideological brand has struggled to find roots. Despite a modest gain in vote share during the 2024 Lok Sabha polls, the party remains on the fringes in Tamil Nadu. Shah was quick to underline the party’s internal reshuffling by announcing MLA Nainar Nagendran as the new state president, while praising Annamalai’s efforts in expanding the BJP's grassroots presence. “The BJP will leverage Annamalai Ji’s organisational skills in the party’s national framework,” Shah posted on X.

Can the Alliance Work?

The real test lies in whether this new-old alliance can overcome more than just bad blood. The electoral math is far from favorable. Analysts say a serious challenge to the ruling DMK will require roping in Vijay’s Tamilaga Vettri Kazhagam (TVK), which is currently charting its own independent path. The youth-driven party, though nascent, is estimated to capture up to 5% of the vote—enough to spoil equations but not necessarily to win outright.

Vijay’s reluctance to campaign before completing his current film project and his probable demand for a deputy CM post and a fixed number of seats makes a pre-poll alliance unlikely. Without TVK’s youthful base, the NDA will have to rely on a coalition of smaller parties such as the PMK, DMDK, Tamil Maanila Congress, and others to make a dent.

“The alliance will need a carefully balanced narrative, addressing regional concerns without compromising the BJP’s broader national agenda if it is to be a winner,” says B.V. Muralidhar of Sri Venkateswara University said to India Today.

DMK’s Stronghold and Anti-Incumbency Factor

The DMK, led by M.K. Stalin, remains the dominant force, benefiting from a dedicated cadre, a well-oiled election machinery, and recent welfare schemes that have shored up support among marginalised communities. However, rising youth unemployment and anti-incumbency sentiments could open windows of opportunity for a revitalised opposition.

Stalin is already gearing up for a BJP-focused campaign, reigniting Tamil Nadu’s historical resistance to Hindi imposition and taking a stand against the BJP’s New Education Policy and the controversial Waqf Amendment Bill. These issues could polarize the electorate along ideological lines, giving the NDA a clearer enemy to position itself against.

High Risk, Potential Reward

For EPS, the alliance is a last-ditch effort to remain politically relevant. For the BJP, it’s another step in its long-term southern strategy. “This is a now-or-never situation,” said one observer close to the alliance. The stakes are especially high given the AIADMK’s dismal 2024 performance where it lost deposits in seven constituencies—a historic low for a party that once ruled Tamil Nadu with a firm grip.

The NDA, if it holds, could pose a unified front strong enough to challenge the DMK's supremacy—but only if it overcomes internal contradictions and builds a coherent campaign that speaks to Tamil voters’ regional pride and daily concerns.