Delimitation row: Why it has become a key issue between Centre and southern states

The issue of delimitation has emerged as a major political flashpoint between the Centre and several southern states, with concerns mounting over its impact on parliamentary representation and federal balance.

Delimitation refers to the redrawing of Lok Sabha and Assembly constituencies based on population changes to ensure equal representation. The next exercise, expected after 2026, could significantly alter the distribution of seats across states.

At the heart of the dispute is the fear among southern states that a population-based redistribution of seats will reduce their representation in Parliament. States such as Tamil Nadu, Kerala, Karnataka and Andhra Pradesh have seen slower population growth due to better implementation of family planning measures.

In contrast, several northern states have experienced higher population growth, which could translate into more seats for them under delimitation.

Political leaders in the South have argued that such a move would effectively “penalise” states that successfully controlled population growth.

They contend that representation should not be based solely on population, and have called for alternative criteria such as economic contribution or development indicators to be considered.

The issue has gained urgency amid discussions around increasing the number of Lok Sabha seats to implement the women’s reservation law. Reports suggest the total strength of the Lower House could be expanded significantly, with delimitation playing a key role in redistributing these seats.

Southern leaders have also raised concerns that their political influence at the national level could diminish if their share of seats declines. Some estimates suggest that their representation could fall sharply, altering the balance of power in Parliament.

On the other hand, the Centre has maintained that delimitation is a constitutional requirement aimed at ensuring equal representation based on population. It has argued that the exercise is necessary to uphold the principle of “one person, one vote.”

The debate has intensified in recent weeks, with several southern chief ministers voicing strong opposition and warning against any move that could undermine federal fairness.

Calls have also been made for wider consultations and a consensus-driven approach before implementing any changes.

With delimitation expected to shape the political landscape ahead of the 2029 general elections, the issue is likely to remain a key point of contention between the Centre and southern states in the coming months.