New Delhi: The Union government’s draft legislation to immediately redraw parliamentary constituencies and expand the Lok Sabha to a maximum of 850 seats has stirred a debate about its possible implications.With the budget session of parliament reconvening on April 16, 2026, the Union government has circulated the Constitution (131st Amendment) Bill, 2026, along with the accompanying Delimitation Bill, 2026. The legislative package proposes a fundamental restructuring of India’s parliamentary map, alarming states that have stabilised their populations over past decades.The draft legislation and mechanismsThe Constitution (131st Amendment) Bill sets a new maximum cap, stating that the Lok Sabha shall consist of not more than 815 members chosen by direct election from territorial constituencies in the states, and up to 35 members from the Union territories. The draft is explicitly silent on the exact state-wise allocation of these seats.Crucially, the 131st Amendment deletes the constitutional proviso under Article 82 that mandated the next delimitation exercise wait for the first Census conducted after the year 2026. Uncoupling delimitation from the post-2026 Census timeline permits the government to redraw boundaries immediately using the latest available data. Furthermore, the Bill clears the legal hurdle to immediately implement the 33% women’s reservation mandated by the 106th Amendment Act (2023) in the next election cycle.The proposals seek to change the seat distribution. The Objects and Reasons of the Constitutional Amendment Bill state: “While the freeze of seats on the basis of population figures of the 1971 Census served an important policy purpose, the country’s demographic profile has since undergone substantial changes, as reflected in the population figures of the latest published census, including significant inter-state and intra-state population shifts.”To determine the actual distribution, the Delimitation Bill, 2026, mandates the creation of a Delimitation Commission. The Bill mandates that it shall be the duty of the commission to readjust the allocation of seats based on the “latest census figures.”According to the draft, the delimitation commission will be headed by a current or former Supreme Court judge and will include the Chief Election Commissioner (or their nominee) and the respective state Election Commissioner. Each state will receive 10 “associate members” – five Members of Parliament and five Members of Legislative Assembly nominated by the Speaker – to assist the Commission. However, the Bill explicitly states that these associate members will have no voting rights and no authority to sign off on the commission’s decisions.The legislation dictates that once the commission’s orders are published in the Gazette of India, they have the force of law and cannot be challenged in any court.The missing matrix and political projectionsBecause the government has withheld the official state-by-state seat matrix, independent analysts have projected the mathematical outcomes.Calculations by The Hindu indicate that if these proposals are enacted, the Hindi heartland states will see their share of Lok Sabha seats rise from the current 38.1% to 43.1%, while the southern states will see theirs shrink from 24.3% to 20.7%.Image 1: Data Projection (The Hindu)Assuming all 815 permitted seats for states are distributed according to the 2011 population distribution:Uttar Pradesh gains 58 seats (from 80 to 138). Share rises from 14.73% to 16.24%.Bihar gains 32 seats (from 40 to 72). Share rises from 7.37% to 8.47%.Maharashtra gains 30 seats (from 48 to 78).Kerala gains three seats (from 20 to 23). Share shrinks from 3.68% to 2.7%.Tamil Nadu gains 11 seats (from 39 to 50). Share shrinks from 7.18% to 5.88%.Psephologist Yogendra Yadav released a separate matrix based on the assumption that the seats are allocated as per the population share in the 2011 Census.“The political pattern of losers and gainers maps almost perfectly on areas of BJP’s weakness and strength,” Yadav posted on X. He noted that because every state receives more seats in an 850-seat House, the true measure of representation is found by comparing projected allocations against the number of seats a state should receive if its present proportional share were respected.Image 2: Data Projection (Yogendra Yadav)According to Yadav, “Kerala would get 23 seats (an additional three) but should have got 31 if its present share was maintained. Hence it’s a loss of eight seats. Uttar Pradesh should have had 125 but would have 138, a gain of 13.”The Carnegie Endowment analysisThe structural disparities were extensively detailed in a 2019 Carnegie Endowment for International Peace study authored by Milan Vaishnav and Jamie Hintson. The authors noted that the wealth gap between India’s states has exploded in recent decades. Citing research by Praveen Chakravarty and Vivek Dehejia, they noted that as of 2017, India’s three richest states were three times richer than its three poorest states, while central allocation of resources via the Finance Commission remained largely based on outdated 1971 population figures. The report detailed the constitutional history of proportional representation under Article 81, which was capped at 520 elected seats by the Seventh Amendment (1956) and now holds a maximum sanctioned strength of 552 (with 545 currently filling seats). To promote family planning policies without punishing states that successfully lowered fertility rates, Prime Minister Indira Gandhi’s government enacted the 42nd Amendment in 1976, suspending the revision of seats until after the 2001 Census. In 2002, a government led by Prime Minister Atal Bihari Vajpayee passed the 84th Amendment, extending the freeze until the next decennial census after 2026. A subsequent 87th Amendment (2003) allowed for redistricting within states based on 2001 figures, without altering the total state assignments.Prior to the current Bill, political scientist Alistair McMillan documented that based on the 2001 Census, Tamil Nadu should have had seven fewer Lok Sabha seats, while Uttar Pradesh should have gained seven more. Updating these figures using the Webster method, Vaishnav and Hintson projected massive shifts by 2026.According to the study, a hidden consequence of reapportionment is the effect on constitutionally reserved seats for Scheduled Caste (SC) and Scheduled Tribe (ST) candidates. Slower-growing southern states stand to lose reserved seats, while faster-growing northern states stand to gain them.To illustrate the political impact, the researchers simulated the 2014 Lok Sabha election results using a reapportioned map based on the 2011 Census.Table Context: Assuming the proportion of seats won by each party remained unchanged, the simulation indicated the BJP’s majority would have increased from 282 to 299 seats, largely at the expense of southern regional parties.The researchers also noted a disparity between population and actual political engagement. For instance, while members of parliament in Uttar Pradesh cater to nearly 30 lakh residents on average compared to 18 lakh in Tamil Nadu, the number of registered voters per constituency is similar. In 2014, slightly more voters per constituency actually went to the polls in Tamil Nadu than in Uttar Pradesh.McMillan previously proposed that the Lok Sabha be expanded just large enough that the most overrepresented state does not lose any seats under reapportionment. Using 2001 figures, he calculated this would require expanding the House to 668 members. However, adjusting this requirement for 2026 population projections, the Carnegie authors found that preventing any state from losing representation would require 848 representatives. Proposed alternativesAmid the federal dispute, several policy experts and political leaders have proposed alternative structures.Bharat Rashtra Samithi leader K.T. Rama Rao has previously advocated for delimitation based on fiscal contributions to the nation. Researchers Pranay Kotasthane and Suman Joshi have proposed a grand federal bargain involving increased expenditure devolution, restricting Union policy lists strictly to national importance, reducing centrally sponsored schemes, and transforming the Rajya Sabha into a Senate-style body with equal representation for all states.Economist Shruti Rajagopalan has suggested converting the Rajya Sabha into a “Revenue Sabha” with seats allotted based on revenue-raising capacity. R. Rangarajan argued that expanding state Assemblies would be a more impactful move than Lok Sabha delimitation. Additionally, S. Raja Sethu Durai and R. Srinivasan have proposed addressing the population planning disparity by using fertility rates as a direct mathematical consideration when distributing any additional seats beyond the existing 543.