The Constitution (131st Amendment) Bill, 2026, which would have raised the Lok Sabha's maximum strength from 550 to 850 seats, was defeated in the Lok Sabha on 17 April 2026 after failing to secure the two-thirds majority required for a constitutional amendment. Two linked bills, the Delimitation Bill, 2026 and the Union Territories Laws (Amendment) Bill, 2026, were introduced alongside it on 16 April 2026 but depended on the constitutional amendment passing first; both were withdrawn once it failed. As of this writing, none of the three measures is law, and the Lok Sabha's seat count remains unchanged.
What did the three bills together propose?
The package, tracked in detail by PRS India's bill summary, had three parts. The Constitution (131st Amendment) Bill, 2026 would have raised the Lok Sabha's maximum strength and let Parliament decide the timing and census basis for the next delimitation exercise, rather than being bound by the constitutional freeze that has kept seat shares fixed since the 1970s. The Delimitation Bill, 2026 would have specified the 2011 census as the basis for the next delimitation and provided for constituting a Delimitation Commission. The Union Territories Laws (Amendment) Bill, 2026 carried parallel provisions for Puducherry, Delhi and Jammu & Kashmir.
Old (current) vs. proposed seat numbers
| Figure | Current (in force) | Proposed by the 2026 bills |
|---|---|---|
| Lok Sabha maximum strength | 550 | 850 |
| Seats from states | Up to 530 | Up to 815 |
| Seats from Union Territories | Up to 20 | Up to 35 |
| Census basis for delimitation | Frozen at pre-1971 allocation | 2011 census (before the 2027 Census results) |
| Women's Reservation Act trigger | Tied to "the first census after 2023" | Delinked, to take effect off the 2011-census-based delimitation instead |
Figures per PRS India's bill summaries. None of the "proposed" figures above are currently in force.
Why did the constitutional amendment fail?
A constitutional amendment under Article 368 needs a special majority: at least two-thirds of the members present and voting, in addition to a majority of the House's total membership. According to LiveLaw's report on the vote, taken on 17 April 2026, the bill secured a majority of votes cast but did not clear the higher two-thirds bar the Constitution requires for this kind of amendment. Several parties, particularly from southern states whose seat shares would have fallen under a purely population-proportional allocation using 2011 data, opposed the bill on the basis that it would reduce their political representation relative to faster-growing northern states.
What happened after the defeat?
Because the Delimitation Bill, 2026 and the Union Territories Laws (Amendment) Bill, 2026 were structured to operate only once the constitutional amendment took effect, the government withdrew both bills after the 131st Amendment Bill was voted down. There have been subsequent reports that the government intends to bring delimitation-related legislation back in a future session, but as of this writing no bill covering this ground has been passed, and readers should not assume the seat increase or the shift to 2011-census-based delimitation is in effect or imminent without checking for a fresh legislative development.
Why this matters beyond Parliament's own composition
Delimitation affects far more than the number of MPs. It determines how parliamentary and assembly constituencies are drawn, which in turn affects Lok Sabha and state assembly seat counts by state, and it was the mechanism the government intended to use to finally operationalise the Women's Reservation Act (106th Amendment, 2023) for the Lok Sabha and state assemblies. With this attempt defeated, that reservation's implementation timeline remains tied to its original, unamended trigger. This is a legislative and constitutional development rather than an actionable legal-service matter for most readers, but if a dispute over constituency boundaries, electoral rolls, or a related administrative action affects you directly, our overview of writ jurisdiction in India explains the constitutional remedies available, and our piece on the Tribunals Reforms Bill, 2026 covers another major piece of 2026 legislation for context.
Disclaimer: This article is for general information only and is not legal advice. Legislative status can change quickly; confirm the current position of any bill discussed here via PRS India or a qualified advocate before relying on it.
Frequently asked questions
Did the Lok Sabha increase its seats to 850 in 2026?
No. The Constitution (131st Amendment) Bill, 2026, which would have raised the Lok Sabha's maximum strength from 550 to 850 seats, was defeated in the Lok Sabha on 17 April 2026 after failing to secure the two-thirds majority a constitutional amendment requires. No seat increase has taken effect.
What happened to the Delimitation Bill, 2026 after the Constitution Amendment Bill failed?
Because the Delimitation Bill, 2026 and the Union Territories Laws (Amendment) Bill, 2026 depended on the Constitution (131st Amendment) Bill passing first, the government withdrew them after the constitutional amendment was defeated. As of this writing, none of the three bills is in force.
Why did the Constitution (131st Amendment) Bill fail?
A constitutional amendment requires a special majority: two-thirds of members present and voting, in addition to a majority of the total membership of the House. Reports of the 17 April 2026 vote indicate the bill received substantially more votes in favour than against, but still fell short of the two-thirds threshold, largely due to opposition from parties concerned about how the reallocation would affect their states' seat shares.
What would the bill have changed if it had passed?
It would have raised the Lok Sabha's maximum strength from 550 to 850 (up to 815 from states and up to 35 from union territories), allowed delimitation to proceed using 2011 census data instead of waiting for a future census, and removed the Women's Reservation Act's link to 'the first census after 2023,' potentially allowing that reservation to take effect sooner.
Will the Lok Sabha seat increase come back?
There have been reports that the government intends to reintroduce delimitation-related legislation in a future parliamentary session, but as of this writing no new bill has been passed. Readers should treat any seat increase as not currently in effect and watch for fresh legislative action rather than assume the April 2026 proposal will simply resume where it left off.