1.Delimitation Process in India (Delimitation Commission)
What & Where
Delimitation = periodic redrawing of Lok Sabha & State Assembly constituencies across India on latest Census numbers
Conducted nationwide by statutory Delimitation Commission; Election Commission provides staff & logistics
Aims at equal voter-to-seat ratio and earmarks SC/ST-reserved constituencies per constitutional mandate
Quick Facts for MCQs
Legal & Policy
- Freeze intended to reward population control, postponing seat reallocation until post-2026 exercise
- Commission constituted via Parliament Act; not dissolved until tasks completed for all assigned states
- Separate law needed each Census before new delimitation can start
Institutional Setup
- Election Commission supplies required maps, rolls, logistics to Commission
- State Election Commissioners assist for assembly segment details
- Draft proposals published; public sittings held before final notification
Historical Timeline
- First mapping 1950-51 executed by President with EC help before inaugural general election
- 2002 Commission chaired by Justice Kuldip Singh used 2001 data without altering state seat shares
- Northern states’ rapid population growth vs southern plateau driving current political debate
Reservation Aspect
- SC/ST seat count recalculated every delimitation using district-level community population data
- Commission identifies specific constituencies to rotate reservation, preventing permanent tagging
- No provision for OBC reservation in legislatures under present framework
Key Data Points
| Feature | Data-Point |
|---|---|
| Constitutional base (Parliament) | Article 82 |
| Constitutional base (States) | Article 170 |
| Establishing law | Delimitation Act passed after each Census |
| Supervising body type | High-powered, quasi-judicial commission |
| Chairperson | Retired Supreme Court judge |
| Other members | CEC-nominated EC + State ECs concerned |
| Orders challengeable? | No, final & binding |
| Seat freeze amendment | 42nd Amendment 1976 (locks 1971 totals) |
| Territory tweak, no seat change | 84th Amendment 2001 |
| Current Census base for boundaries | 2001 (per 87th Amendment 2003) |
| Full exercises held | 1952, 1963, 1973, 2002 |
| Last state-wise seat alteration | 1976 (based on 1971 Census) |
Related UPSC Prelims PYQs
How many Delimitation Commissions have been constituted by the Government of India till December 2023?
With reference to the Delimitation Commission, consider the following statements:






