What is Delimitation Bill, 2026: What it proposes, and why Southern states are opposing it

The government on Thursday tabled the Delimitation Bill in Parliament amidst a sharp political backlash, with opposition parties, particularly from southern states.

States and union territories with a single Lok Sabha constituency are set to see no increase in parliamentary seats, even as the proposed delimitation marginally enhances Scheduled Caste (SC) representation. Other states and UTs currently with an odd number of seats will benefit as the numbers would be rounded up after delimitation.

Under the proposed exercise, Lok Sabha representation for three states and six UTs with a single seat each would remain unchanged, even though their assembly strength would expand. All these three states are in the Northeast-Sikkim, Nagaland and Mizoram.


In other states and UTs, the numbers will be increased by 50%.



Tamil Nadu politicians including Chief Minister MK Stalin and Kamal Haasan have raised concerns over the upcoming delimitation exercise, scheduled for 2026. The electoral exercise has sparked significant debate, particularly among southern states. However, leaders from states like Tamil Nadu express concerns that this process could diminish their political influence in Parliament. Tamil Nadu CM Stalin urged newlywed couples to plan a family early, linking it to Tamil Nadu’s representation in Parliament.

What is delimitation?

Delimitation is the process of redrawing parliamentary and state assembly constituencies based on demographic changes. It ensures electoral representation reflects population shifts and determines the number of seats reserved for Scheduled Castes (SC) and Scheduled Tribes (ST).

What does the law say about delimitation?

Articles 82 and 170 of the Indian Constitution mandate the revision of parliamentary and assembly seats based on the latest census. The Delimitation Commission, constituted by Parliament, oversees the process. Since representation is tied to population size, states with higher population growth could gain more seats, while those with lower growth may see a decline.

History of delimitation in India

India conducted delimitation exercises in 1951, 1961, and 1971 before freezing the process in 1976 through the 42nd Amendment Act. This move aimed to encourage population control and prevent states with high growth rates from gaining an electoral advantage. The freeze was extended in 2001 through the 84th Amendment, postponing delimitation until 2026.

Expected impact of upcoming delimitation

The next delimitation exercise is likely to be based on the 2031 Census, with discussions already underway in anticipation of the 2026 deadline. Projections suggest that if current population trends continue, the number of Lok Sabha seats may increase from 543 to 753.

Delimitation's Impact on Southern States

Southern states currently hold 129 out of 543 Lok Sabha seats:

State	Current Seats	Projected Seats (2026) After Delimitation
Southern States	129 seats (out of 543)	144 seats (out of 753)
Telangana	17	20
Andhra Pradesh	25	28
Kerala	20	19
Tamil Nadu	39	41
Karnataka	28	36
Northern States	222 seats (out of 543)	357 seats (out of 753)
Uttar Pradesh	80	128
Bihar	40	70
Madhya Pradesh	29	47
Maharashtra	48	68
Rajasthan	25	44

The South’s share in Lok Sabha representation is expected to decline from 23.7% to 19%, while northern states are projected to gain a larger share.

Tamil Nadu’s concerns

Chief Minister MK Stalin has expressed concerns over the impact of delimitation on southern states. “It is because a situation has now arisen, according to which only a higher population would ensure more MPs as the delimitation exercise would be on the basis of population,” Stalin said. “Tamil Nadu paid attention to population control and succeeded and that was the reason for the state’s plight today,” he added. “I will not tell you to not have children hastily, have children immediately; but give them beautiful Tamil names,” he said at a wedding function in Nagapattinam.

Why are southern states opposing delimitation?

Reduced political influence The South’s parliamentary representation could drop from 24 per cent to 19 per cent, while Hindi-speaking states could see an increase of about 60 per cent.

Economic contribution vs representation Tamil Nadu, Karnataka, and Maharashtra are among India’s highest tax-contributing states but receive only 30 per cent of their contributions in return. In contrast, Bihar and Uttar Pradesh receive 250-350 per cent more than what they contribute. Southern states argue that economic contribution should be a factor in representation.

Women’s Reservation Act & SC/ST reservations The Women’s Reservation Act, mandating 33 per cent reservation for women in Parliament and state assemblies, will also play a role in delimitation. Additionally, the process will affect SC/ST seat reservations, adding another layer of complexity to the issue.