The Constitution of India came into force on 26 January 1950 — Republic Day. It is the world's longest written constitution. The Constituent Assembly framed it from December 1946 to November 1949 under Dr B.R. Ambedkar as Chairman of the Drafting Committee.
Constituent Assembly
- Established under Cabinet Mission Plan (1946)
- First meeting: 9 December 1946; Dr Sacchidananda Sinha — temporary President
- Permanent President: Dr Rajendra Prasad
- Drafting Committee Chairman: Dr B.R. Ambedkar
- Adopted: 26 November 1949 (Constitution Day / Law Day since 2015)
- Came into force: 26 January 1950 (Republic Day)
- Original: 395 articles, 8 schedules; currently 448 articles, 12 schedules, 25 parts
Sources of the Indian Constitution
| Source Country | Features Borrowed |
| UK (British) | Parliamentary system; rule of law; single citizenship; Cabinet system; writ jurisdiction; Speaker |
| USA | Fundamental Rights; independent judiciary; judicial review; impeachment; removal of Supreme Court judges; Preamble inspiration |
| Ireland | Directive Principles of State Policy; Nomination to Rajya Sabha; method of President's election |
| Canada | Federal system with strong centre; residuary powers with Centre; Advisory jurisdiction of Supreme Court |
| Australia | Concurrent List; joint sitting of Parliament; freedom of trade and commerce |
| Germany (Weimar) | Suspension of Fundamental Rights during Emergency |
| South Africa | Amendment procedure (Art 368); election of Rajya Sabha members |
| USSR (Soviet) | Fundamental Duties; Five Year Plans |
| Japan | Procedure established by law (Art 21) |
| France | Liberty, Equality, Fraternity in Preamble; Republic |
| Government of India Act 1935 | Federal structure; Governor; judiciary; Public Service Commissions; Emergency provisions |
Preamble
WE, THE PEOPLE OF INDIA, having solemnly resolved to constitute India into a SOVEREIGN SOCIALIST SECULAR DEMOCRATIC REPUBLIC...
- Socialist, Secular, Integrity — added by 42nd Amendment (1976)
- Sovereign: Supreme authority; not subject to any external power
- Socialist: Mixed economy; no monopoly; equal distribution
- Secular: No state religion; equal treatment of all religions (positive secularism)
- Democratic: Government elected by people; universal adult franchise
- Republic: Elected head of state (not hereditary)
- Preamble is a part of the Constitution (Kesavananda Bharati case 1973)
- Preamble cannot be amended to alter the basic structure (Kesavananda Bharati)
Salient Features of Indian Constitution
- Longest written constitution in the world
- Federal with unitary bias ("quasi-federal" — K.C. Wheare)
- Parliamentary system of government
- Fundamental Rights (justiciable) + DPSP (non-justiciable)
- Single citizenship; single constitution for centre and states (unlike USA)
- Independent judiciary with power of judicial review
- Secular state
- Universal adult franchise (age 18; 61st Amendment 1988 lowered from 21)
- Emergency provisions — National (Art 352), State/President's Rule (Art 356), Financial (Art 360)
Schedules of the Constitution
| Schedule | Subject |
| 1st | Names of states and UTs with territories |
| 2nd | Salaries of President, Governors, judges, etc. |
| 3rd | Forms of oaths and affirmations |
| 4th | Allocation of Rajya Sabha seats |
| 5th | Administration of Scheduled Areas (tribal) |
| 6th | Administration of Tribal Areas in NE India (Assam, Meghalaya, Tripura, Mizoram) |
| 7th | Division of powers — Union List (100 subjects), State List (61), Concurrent List (52) |
| 8th | 22 official languages |
| 9th | Laws protected from judicial review (added by 1st Amendment 1951) |
| 10th | Anti-defection provisions (52nd Amendment 1985) |
| 11th | Powers of Panchayati Raj (29 subjects) |
| 12th | Powers of Municipalities (18 subjects) |
UPSC Tip: DPSP borrowed from Irish Constitution. Fundamental Rights from USA. Government of India Act 1935 = single largest source. 42nd Amendment (1976) = "Mini Constitution" added Socialist, Secular, Integrity to Preamble + Fundamental Duties. Art 21 "procedure established by law" from Japan.