131st Amendment Bill Fails in Lok Sabha: The Delimitation Crisis and the Battle for Political Representation
Published by Sanjay Krishnamurthy, Political Legal Analyst on May 14, 2026 | 6 min read
On April 17, 2026, the Constitution (131st Amendment) Bill failed to pass in the Lok Sabha, unable to secure the mandatory two-thirds majority. The Bill sought to expand Lok Sabha seats from 550 to 850 and trigger a new delimitation exercise.
Key Takeaways
- The Constitution (131st Amendment) Bill, 2026, was defeated on April 17, 2026.
- The Bill sought to increase Lok Sabha strength from 550 to 850 seats.
- It failed to secure the mandatory two-thirds majority: 298 voted in favour, 230 against.
- The companion Delimitation Bill, 2026 and Union Territories Laws (Amendment) Bill were also withdrawn.
- Southern states opposed the Bill, fearing reduced representation due to slower population growth.
- A constitutional amendment under Article 368 requires a 2/3rd majority in both Houses plus ratification.
What Was the 131st Amendment Bill?
The Constitution (131st Amendment) Bill, 2026, introduced in the Lok Sabha in April 2026, had two primary objectives. First, it proposed increasing the maximum strength of the Lok Sabha from the current 550 seats to 850 seats, which would represent the largest expansion of Parliament in India's post-independence history. Second, it was directly linked to implementing the women's reservation under the 106th Constitutional Amendment Act, 2023 (Nari Shakti Vandan Adhiniyam), which mandated one-third reservation for women in the Lok Sabha and State Assemblies, but only after a new delimitation exercise. The Bill was accompanied by the Delimitation Bill, 2026, and the Union Territories Laws (Amendment) Bill, 2026.
Why the Bill Failed
For a Constitutional Amendment Bill to pass, it must secure a special majority under Article 368: a majority of the total membership of each House AND a two-thirds majority of members present and voting. In the Lok Sabha vote on April 17, 2026, the Bill received 298 votes in favour and 230 against — falling short of the required two-thirds majority. The primary opposition came from parties representing southern, eastern, and northeastern states. Their central argument was that a new delimitation based on recent Census data (which reflects the slower population growth of these states compared to northern states) would effectively reduce their seat share in Parliament — penalizing them for having successfully controlled population growth over decades.
The Delimitation Freeze and Article 82
The root of the controversy lies in Article 82 of the Constitution, which requires a readjustment (delimitation) of Lok Sabha constituencies after each Census. However, since 1976, this delimitation has been frozen — first by the 42nd Amendment, and subsequently by the 84th Amendment (2001), which froze seats on the basis of the 1971 Census until 2026. This freeze was explicitly designed to prevent states with higher population growth from gaining disproportionate political power at the expense of states that had achieved better family planning outcomes. The 131st Amendment Bill proposed ending this freeze, triggering the first delimitation in over 50 years.
What Happens Now
The defeat of the Bill means the women's reservation under the 106th Amendment cannot be operationalized, as it was contingent on a new delimitation exercise. The seat count in the Lok Sabha remains at 543 elected seats. Constitutional experts note that the government may attempt to revive the Bill with modifications — perhaps offering a separate mechanism for women's reservation that does not require a new delimitation. The debate has reignited a fundamental question about Indian federalism: How should political representation balance total population with historical contributions to national development goals like family planning?