The impending delimitation of parliamentary constituencies has triggered a sharp response from Tamil Nadu, and for good reason. The state fears a perverse outcome: its success in controlling population growth may now reduce its political voice if inter-state seat shares are realigned using updated population data. What is at stake is not only the distribution of parliamentary seats, but their conversion into political weight within the Union itself.

This anxiety is not unique to Tamil Nadu. It is shared by other states with similar demographic trajectories, where the relationship between population change and political representation has become newly fraught within India’s federal order.

Indian federalism has repeatedly relied on metrics such as population, plan outlays, deficits, and quotas to allocate resources and power across states. 

Delimitation is only the most recent instance of a longer pattern.

The political economy of the erstwhile Madras State illuminates this history with remarkable clarity. Across sectors, numbers did not simply describe reality; they structured how claims were made and adjudicated. This became central to negotiating equitable treatment and a dignified place in national political life.

Planning and the politics of allocation

In the 1950s, as India’s planning architecture took shape, this distributive logic crystallised around the determination of state plan outlays. In the run-up to the Second Five-Year Plan, the size of the Madras plan became a site of contestation. The Dravida Munnetra Kazhagam (DMK), then articulating its early political position, criticised the Congress government for accepting a reduced outlay rather than demanding a population-proportionate share.

This language did not remain confined to the opposition. In the Assembly, Finance Minister C Subramaniam advanced a........

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