Delimitation After 2031 Census: Why Southern States Could Lose 14 Lok Sabha Seats

When India conducts its first delimitation exercise after the 2031 Census — readjusting Lok Sabha constituencies to reflect population changes — five southern states stand to lose an estimated 14 combined seats. Tamil Nadu, Kerala, Karnataka, Andhra Pradesh, and Telangana have achieved sub-replacement fertility through decades of investment in women's education and healthcare. Under Article 81 of the Constitution, which ties seat allocation to population, their success in implementing national population policy translates to proportionally diminished political weight.

“Penalising states for implementing exactly what the national population policy asked them to do is a structural flaw in our federal democracy that has never been properly resolved.”

— M.V. Rajeev Gowda, former MP and political economist

A constitutional amendment in 2002 froze Lok Sabha seats at their 2001-census levels until after the first Census following 2026. That Census — delayed from 2021 by COVID, then again to 2026 — means the actual delimitation exercise is now expected to begin in 2029. Five southern states, along with Kerala-based academicians and opposition parties, have called for a constitutional amendment that incorporates human development metrics — not merely headcount — in seat allocation. The government has not formally responded to these proposals.