Delimitation bill: DMK’s dilemma, TVK’s political gamble, and Congress’s game plan

The impending delimitation exercise represents a watershed moment for Indian federalism, threatening to fundamentally recalibrate the balance of power between the Union and the States.

The political battle over the delimitation bill has intensified ahead of the monsoon session of the Parliament, with differences between the Congress and the DMK becoming the centre of activity. The issue has emerged as flashpoint within the Opposition, with the DMK having 22 MPs in the Lok Sabha.

While this has raised questions about the future of Opposition unity and its strategy in Parliament, Chief Minister C. Joseph Vijay-led Tamilaga Vettri Kazhagam (TVK) in Tamil Nadu has taken the delimitation issue as a powerful tool to challenge the DMK.

As the Narendra Modi government prepares a constitutional amendment to facilitate this redrawing of constituencies, it has strategically linked the exercise to the implementation of the 33 per cent reservation for women. This linkage places Opposition parties in a difficult pincer movement, forced to weigh a popular mandate for gender representation against the risk of permanent regional marginalisation.

DMK’s counter proposal and the three non-negotiable demands

Historically, the allocation of parliamentary seats has remained frozen based on the 1971 Census to avoid penalising states that implemented successful family planning. However, this freeze is scheduled to expire following the next census, anticipated in 2027.

The government has articulated a transformative 850-seat vision for the Lok Sabha, moving away from the current cap. Within this high-stakes environment, the Dravida Munnetra Kazhagam (DMK) has emerged as a central, albeit conflicted, player. With a substantial parliamentary bloc—30 MPs together in Rajya Sabha and Lok Sabha—the DMK’s strategic pivot from symbolic protests to conditional engagement may well determine the success of the government’s constitutional ambitions.

The DMK has recently transitioned from symbolic resistance, such as the burning of a previous legislative draft, to a posture of pragmatic, conditional engagement. While the party leadership maintains that a “final call” depends on the “form and substance” of the upcoming bill, they have signalled that their support is contingent upon three structural revisions designed to protect the interests of the South: an extended 1971 baseline, blanket expansion, and the DMK moving beyond accepting executive assurances.

The party demands the inclusion of a definitive “schedule” within the legislative package, explicitly codifying the state-wise seat counts post-expansion to ensure constitutional permanence and transparency.

This tripartite strategy serves as a layer of political survival. By advocating for these specific conditions, the DMK attempts to participate in the national legislative process—particularly the popular women’s reservation cause—while mitigating the demographic disadvantage that threatens Tamil Nadu’s federal influence. It is a calculated hedge against political isolation following recent shifts in national alliances.

TVK’s gamble

Though the Centre has maintained that any decision on delimitation will follow constitutional provisions, Opposition parties remain divided over its potential impact on political representation, especially for the southern states, which fear the numbers may proportionally go down if the constituencies are redrawn based on the population.

Nationally, the question is if the delimitation bill will deepen the cracks within the Opposition. But in Tamil Nadu, the question is if the fledgling TVK is trying to fix the DMK.

While Vijay has called for an all-party MP meeting on delimitation to showcase state unity, the DMK has countered by insisting the immediate priority must be a joint stand on Cauvery water rights. Despite reports of softening, Udhayanidhi Stalin has clarified that the DMK remains opposed to the exercise from the beginning. This reflects the party's need to maintain historical consistency while the leadership evaluates the Centre's outreach.

The delimitation debate is further inflamed by the intense intra-state rivalry between the DMK and TVK. This friction reached a boiling point following the dramatic arrest of Udhayanidhi Stalin earlier this week over vulgar remarks directed at actress Trisha, a close associate of Vijay.

This personal hostility mirrors a broader strategic divorce: the DMK has exited the INDIA bloc at the national level after the Congress abandoned them to support the TVK in Tamil Nadu.

Congress’s game plan

Vijay had apparently called for this meeting a week after Leader of Opposition (LoP) Rahul Gandhi said that anyone who supported the delimitation bill was not just “betraying the future of Tamil Nadu but allowing the BJP to attack the people of the state".

Supporting such a bill carries immense political risk. Rahul Gandhi’s recent invocation of the “21st-century Ettappans”—a reference to the infamous traitor of Tamil history—targeted those in the South who might assist the Centre in this exercise. For the DMK, the challenge is to avoid being characterised as the betrayer of Tamil sovereignty while navigating a path toward legislative relevance.

For the Congress which had won the maximum number of MPs by being in the DMK alliance in Tamil Nadu since 2019, being with the DMK at the Centre means denouncing the BJP in the Parliament, while being with the TVK in Tamil Nadu means being in power in the state.

The Congress, which cannot afford to lose in the Parliament—given the risk it poses in the 2029 Lok Sabha polls—wants to ride piggyback on both the TVK and the DMK only to capitalise on the anti-BJP narrative in the state.