Delimitation & the 131st Amendment Bill: 850 Lok Sabha Seats, Women's Quota, 1971 Census

Meaning: Delimitation is the exercise of redrawing the boundaries of Lok Sabha and State Legislative Assembly constituencies, and reallocating the number of seats, on the basis of the latest Census population figures. Its purpose is to keep representation roughly equal — the democratic principle of "one person, one vote, one value" — so that as population shifts, electoral constituencies remain comparable in size.

The constitutional foundation: Article 81 governs the composition of the Lok Sabha and requires that seats be allocated to each state in proportion to its population, so that the ratio of seats to population is, as far as practicable, the same for all states. Article 82 mandates that after every Census, Parliament shall by law readjust the allocation of seats and the division of states into constituencies. Article 170 applies the same principle to State Legislative Assemblies. Articles 330 and 332 provide for the reservation of seats for Scheduled Castes and Scheduled Tribes in the Lok Sabha and State Assemblies respectively, which must be re-fixed during delimitation.

The exception for small states: Article 81 makes one exception — very small states with a population not exceeding six million are allowed somewhat disproportionate representation so that they still get adequate voice. Union Territories' representation is decided separately by Parliament.

The freeze explained: Although the Constitution requires readjustment after every Census, the allocation of Lok Sabha seats among states has effectively been frozen since the 1971 Census. The total number of seats per state — currently 543 — has not changed to reflect population growth since then.

How the freeze came about: The 42nd Constitutional Amendment (1976) froze the state-wise allocation of Lok Sabha and Assembly seats on the basis of the 1971 Census, initially until the first Census after 2000. The 84th Constitutional Amendment (2001) extended this freeze until the first Census taken after 2026.

Why it was done: The freeze was a deliberate "motivational measure". States that successfully controlled their population growth would otherwise have been penalised by losing relative seats, while states with high growth would have gained. Freezing the allocation removed this disincentive and encouraged states to pursue family-planning and population-stabilisation goals without fear of losing political weight. The freeze automatically lapses once the figures of the first Census after 2026 are published.

A key distinction: A limited delimitation was carried out after the 2001 Census (Delimitation Commission constituted in 2002, orders finalised in 2008). However, this only redrew constituency boundaries within states — it did not change the total number of seats allotted to each state, which remained frozen at 1971 levels.

The package: On 16 April 2026, three linked Bills were introduced — (i) the Constitution (131st Amendment) Bill, 2026, (ii) the Delimitation Bill, 2026, and (iii) the Union Territories Laws (Amendment) Bill, 2026. Together they sought to expand the House, enable a fresh delimitation, and operationalise women's reservation within a defined timeline.

Expanding the Lok Sabha: The package proposed raising the Lok Sabha's maximum strength to 850 — up to 815 members from states and up to 35 from Union Territories — a roughly 50% increase from the present 543. (The Rajya Sabha's ceiling of 250 under Article 80 was left unchanged.)

Changing the Census basis: The amendment proposed to remove the existing provision tying allocation to the 1971 Census and instead allow delimitation on the basis of the 2011 Census, with Parliament empowered to decide the timing and the Census to be used. Reverting to proportional-to-population using newer Census data would shift seats toward higher-population states.

Fast-tracking women's reservation: The 106th Amendment had made women's reservation contingent on a future Census and delimitation. The 131st Amendment Bill sought to delink and advance this — using the 2011 Census — so that the one-third reservation could potentially apply earlier rather than waiting for the 2027 Census exercise to conclude.

The special majority requirement: Under Article 368, a Bill to amend the Constitution must be passed in each House by a special majority — that is, (a) a majority of the total membership of the House, and (b) a majority of not less than two-thirds of the members present and voting. Both conditions must be satisfied.

What happened in the vote: In the Lok Sabha, 298 members voted in favour and 230 against, with 528 present and voting. The 298 votes crossed the first threshold — a majority of the total 543-member House (which needs more than 271). But two-thirds of 528 present and voting works out to roughly 352 votes. Falling well short of that second limb, the Bill was defeated, and the government withdrew the two companion Bills that depended on it.

The political reading: The defeat showed that even with a Lok Sabha majority, a government cannot amend the Constitution without broader cross-party consensus — precisely the design intent of the special-majority rule, which protects the Constitution from being altered by a transient majority.

The 106th Amendment (2023): The Constitution (One Hundred and Sixth Amendment) Act, 2023 — known as the Nari Shakti Vandan Adhiniyam — provides for reservation of one-third of seats for women in the Lok Sabha, State Legislative Assemblies and the Delhi Assembly. However, it stipulated that the reservation would take effect only after a delimitation exercise based on the first Census conducted after the Act's commencement.

The timing problem: Because the next Census (with reference date 1 March 2027) and the consequent delimitation will take years, women's reservation could be delayed well beyond the 2029 general elections. The opposition argued that linking women's quota to delimitation effectively postpones women's representation, while the government argued delimitation is the constitutionally sound route to create the additional reserved seats.

The present picture: Women hold a small share of seats in the current Lok Sabha — well below the proposed one-third — even as Panchayati Raj institutions have achieved far higher women's representation, underscoring the gap the reservation seeks to close.

The core fear: States in the south — Tamil Nadu, Kerala, Karnataka, Andhra Pradesh — and others fear that delimitation based purely on current population would reduce their relative number of seats, because they curbed population growth effectively. Meanwhile, higher-growth northern states such as Uttar Pradesh and Bihar would gain seats. Southern leaders argue this would penalise good governance on population control and erode their voice in Parliament.

The "Damocles sword" framing: This anxiety has driven demands — articulated through all-party resolutions in Tamil Nadu — that the 1971 Census remain the basis for inter-state seat allocation, with any new arrangement frozen for a further period. The DMK and several other parties have insisted that any guarantee of proportional protection must be written into the text of the Bill, not merely assured verbally, and that women's reservation be delinked from delimitation.

The government's response: During the April debate, the government offered a uniform 50% increase in seats for every state so that existing shares are preserved. The reworked Bill now reportedly seeks to embed this protection — keeping allocation proportionate to the 1971 Census — to win the consensus it lacked.

Nature and composition: The Delimitation Commission is a high-powered statutory body constituted by the Union government to carry out delimitation. It is typically chaired by a sitting or retired Supreme Court judge, with the Chief Election Commissioner (or a nominated Election Commissioner) and the State Election Commissioner of the concerned state as members.

Binding powers: Its orders have the force of law and, under Article 329(a), cannot be challenged in any court — a safeguard meant to ensure the process is final and free from prolonged litigation. India has constituted Delimitation Commissions four times (1952, 1963, 1973 and 2002).

Council of Ministers: Under Article 75 (inserted via the 91st Amendment, 2003), the size of the Union Council of Ministers cannot exceed 15% of the Lok Sabha's strength. If the House grows to 815, the permissible ministry size would rise from about 81 to around 122 — raising questions about executive size and efficiency.

Lok Sabha-Rajya Sabha balance: Since the Rajya Sabha's strength is unchanged, expanding the Lok Sabha alters the ratio between the two Houses (from roughly 2.2:1 toward 3.3:1). This affects the relative weight of Rajya Sabha members in elections to the offices of President and Vice-President.

Practical demands: A larger House also requires new constituency mapping, additional infrastructure (a bigger chamber — already anticipated in the new Parliament building), and significant administrative preparation.

The episode illustrates the delicate balance India must strike between two legitimate democratic principles — equal representation by population, and the protection of regional and federal interests. The freeze imposed in 1976 and extended in 2001 bought time, but its scheduled expiry after the first post-2026 Census makes some form of delimitation unavoidable. The path to a durable solution lies in genuine consensus-building: writing protections into the text of the law rather than relying on assurances, considering options such as expanding the House so that no state loses seats in absolute terms, and treating women's reservation as a goal that need not be hostage to the larger delimitation question. Given the special-majority requirement under Article 368, only a broad, cross-party and inter-regional agreement — bringing southern states on board — can carry such a far-reaching constitutional change.