Delimitation is often described as a technical exercise in redrawing electoral boundaries. It is anything but. It determines how population is converted into political representation and, therefore, can alter the balance of power between states and regions for decades. In India, the question has become particularly contentious because the country is approaching a new delimitation exercise at the same time as the Census has been delayed and the constitutional framework governing the timing and basis of delimitation is being reconsidered.
The issue is not whether India should ever undertake delimitation. It must. The more difficult question is whether the country should alter the constitutional framework governing delimitation before the demographic data on which representation is ordinarily based are available, and what safeguards should accompany such a change.
The stakes became clear in April 2026, when the government introduced three Bills in the Lok Sabha: the Constitution (131st Amendment) Bill, the Delimitation Bill and the Union Territories Laws (Amendment) Bill. The proposed constitutional changes sought to permit Parliament to determine by law which Census would be used for delimitation, while the Delimitation Bill sought to enable an exercise based on the latest published Census. The Bills also sought to change the framework for implementing women’s reservation. The Bills became infructuous the following day, but the constitutional and political questions they raised remain very much alive.
Why Census Matters
The present Lok Sabha constituencies are based on the 2001 Census for territorial delimitation, while the allocation of seats among states remains frozen on the basis of the 1971 Census. The constitutional freeze was intended to prevent states that successfully pursued population stabilisation from being penalised by losing political representation. The 84th Constitutional Amendment subsequently extended the freeze until the first Census after 2026.
That arrangement inevitably created disparities. Population has grown at very different rates across India, and constituencies do not all contain the same number of electors. Delimitation is therefore necessary if the constitutional principle of political equality is to have practical meaning.
But the solution raises another problem. If representation among states is redistributed primarily according to population, states that have experienced faster population growth could gain seats, while states that succeeded in slowing population growth could see their share of national representation decline.
That is the central political difficulty. Population control was encouraged as a national objective. It would be deeply contentious if success in achieving that objective were subsequently converted into a loss of political weight.
The answer cannot simply be to postpone delimitation indefinitely. Nor can it be to pretend that the demographic question does not exist. India needs a transparent formula that reconciles two competing principles: equal representation of citizens and fairness to states that have pursued population stabilisation.
Why Sequence Matters
The timing of the exercise is therefore critical. The government has argued that the proposed changes would allow women’s reservation to become operational earlier and that an expanded Lok Sabha would ensure that no state, including those in southern India, suffers a reduction in representation. In Parliament, the government said the proposed arrangement would increase the total number of seats and that the southern states’ aggregate share would remain broadly stable.
Those assurances deserve to be examined rather than simply accepted or rejected.
The proposed 2026 framework contemplated an increase in the maximum permissible strength of the Lok Sabha and a return to the principle that seats should be allocated among states in proportion to population. PRS noted that this could substantially change the distribution of seats among states, even though the increase in the total number of seats could soften the impact on individual states.
This is precisely why the debate should not be reduced to the slogan of a “North-South divide”. The real question is mathematical and constitutional: what happens to each state’s share of representation under the proposed formula?
The government has published projections showing, for example, that Karnataka’s Lok Sabha seats could rise from 28 to 42, Tamil Nadu’s from 39 to 59 and Kerala’s from 20 to 30, while their percentage shares of an expanded House would remain broadly similar to their present shares.
These projections are important because they challenge the simplest version of the argument that southern India will automatically lose seats. But they do not settle the larger question. Parliament should know exactly how the formula works, what assumptions underlie the projections, how the seats would ultimately be distributed and what happens to states outside the illustrative calculations.
The public deserves to see the methodology, not merely the final numbers.
Women’s Reservation Question
Women’s reservation has complicated the timetable further. The 106th Constitutional Amendment, enacted in 2023, provided for one-third reservation for women in the Lok Sabha and state legislative assemblies. Its operation was linked to a Census followed by delimitation.
The 2026 constitutional amendment proposal sought to remove that sequencing problem and enable the reservation to become operational through the revised delimitation framework. The political attraction is obvious: it could bring women’s reservation into the electoral system earlier than would otherwise be possible.
But the debate should not stop at the question of when women receive reserved seats. It should also ask how those seats will be selected and rotated, how existing constituencies will be affected and whether established political networks will dominate the first generation of reserved constituencies.
There is a legitimate concern that political parties could initially favour women with established political connections. But that is a hypothesis that needs evidence, not a conclusion that can simply be declared. Women’s reservation could simultaneously broaden participation and create new opportunities for political families. Both possibilities deserve examination.
Institutional Question
The credibility of delimitation will ultimately depend less on political rhetoric than on the independence and transparency of the institution conducting it.
The Election Commission records that the present delimitation process is based on the Delimitation Act, 2002 and that the existing constituencies were delimited using 2001 Census figures. The Delimitation Commission’s orders have traditionally enjoyed a high degree of finality, although the Supreme Court’s recent jurisprudence has made clear that constitutional review cannot simply be excluded where a genuine legal challenge is made.
That distinction matters. It is too sweeping to say that every institution involved in the process is politically compromised. A serious argument would instead identify the safeguards required to make the exercise credible.
Those safeguards should include transparent publication of the demographic and geographic data used; a clearly stated formula for allocating seats; public access to draft constituency maps; meaningful public hearings; disclosure of the criteria used for reserved constituencies; and a mechanism for independently scrutinising errors in data or mapping.
The Commission should also explain how competing constitutional principles have been balanced. If population equality is the primary criterion, that should be stated. If regional continuity, administrative boundaries, geographic coherence or the consequences of past population-control policies are also considered, those criteria should be stated as well.
A delimitation exercise cannot be credible if citizens are presented with finished maps without being able to understand how those maps were produced.
New GIS and AI Question
Technology adds another dimension that did not exist in earlier delimitation exercises. Geographic information systems can make constituency mapping faster and more precise. Computational models can analyse population distribution, administrative boundaries, geographic continuity and other variables. But technology does not automatically eliminate political bias.
An algorithm is only as neutral as its data, objectives and parameters. If a redistricting system is instructed to prioritise population equality above every other consideration, it can produce one map. If it is also instructed to minimise changes to existing boundaries, preserve administrative units or protect geographic continuity, it can produce another. Both may be mathematically defensible while reflecting different policy choices.
This is why any future use of GIS or AI should be accompanied by transparency. The public should know what data were supplied, what parameters were used and what constraints were imposed. Independent testing and auditing should be possible. The technology should make the process more accountable, not less.
Real North-South Question
The most difficult issue remains the distribution of political power. Southern states have repeatedly raised the concern that they should not lose political influence because their populations grew more slowly than those of states that experienced much faster demographic growth. Karnataka Chief Minister D.K. Shivakumar, for example, recently called for retaining the 543-seat strength of the Lok Sabha for another 25 years and argued that women’s reservation should be accommodated within the existing strength.
The government has taken the opposite position: that expanding the House can allow greater representation without reducing the relative share of southern states. Both propositions can be tested. That is precisely what Parliament should do.
Instead of arguing about whether the North or South is being favoured, the debate should publish state-by-state projections under different formulas. What would happen if the House remained at 543 seats? What would happen if it expanded? What would happen if the 2011 population figures were used? What would happen under the next Census? How would each formula affect each state’s percentage share?
Until these questions are answered transparently, political parties will continue to fill the vacuum with competing claims.
Delimitation Should Not Become a Black Box
The danger is not delimitation itself. The danger is an exercise in which the rules are changed first and the public is asked to trust the outcome later.
India has reached a point where electoral boundaries cannot be treated as merely technical lines on a map. They determine whose votes are aggregated together, how many citizens each MP represents and, ultimately, how political power is distributed across the Union.
The country therefore needs a delimitation process that is legally sound, demographically defensible and publicly auditable.
The government is entitled to argue that a larger Lok Sabha can correct representational imbalances while protecting the interests of southern states. Opposition parties are entitled to question the formula and its consequences. Neither position should be accepted without evidence.
The answer lies in making the underlying calculations public. There is also a broader constitutional principle at stake. India must reconcile “one person, one vote” with the federal compact that has encouraged states to pursue population stabilisation without fearing a corresponding loss of political voice. Those principles are not necessarily irreconcilable, but reconciling them requires considerably more than passing a Bill.
Delimitation is too consequential to be treated as a political timetable. It should be treated as an exercise in constitutional engineering whose consequences could last for generations.
The question, therefore, is not whether India needs delimitation. It does. The question is whether India is prepared to undertake it in a manner that citizens, states and political parties can regard as demonstrably fair. That is the standard the next delimitation exercise should have to meet.
