Nearly three years, 11 sessions and 165 sitting days — how the Constituent Assembly framed and adopted the Constitution of India.
The Constitution of India was framed by a Constituent Assembly that first met on 9 December 1946 and worked for 2 years, 11 months and 18 days across 11 sessions and 165 sitting days, before adopting the final text on 26 November 1949 — celebrated since 2015 as Constitution Day (Samvidhan Diwas). The Constitution came into force on 26 January 1950, chosen to commemorate the Purna Swaraj declaration of the Lahore Session (1930).
The idea of a Constituent Assembly was first proposed by M.N. Roy (1934) and later formally demanded by the Congress; it was accepted in principle under the Cabinet Mission Plan (1946). Members were indirectly elected by the provincial legislative assemblies (roughly 1 member per million people), with princely states nominating their own representatives. The Assembly, originally about 389 members, was reduced to 299 after Partition, when Muslim League members from Pakistan withdrew.
The Assembly's work was organised through numerous committees, the most important being the Drafting Committee (7 members, chaired by Ambedkar), alongside the Union Powers Committee and Union Constitution Committee (both chaired by Nehru), the Provincial Constitution Committee (chaired by Patel), the Advisory Committee on Fundamental Rights, Minorities and Tribal Areas (chaired by Patel), and the Steering Committee (chaired by Rajendra Prasad).
The Constitution is often described as a "bag of borrowings," combining features from multiple constitutions while adapting them to Indian conditions — parliamentary government from Britain, Fundamental Rights from the USA, DPSPs from Ireland, the federal scheme with a strong Centre from the Government of India Act, 1935, and the amendment procedure from South Africa, among others.
The Constitution was adopted on 26 November 1949, with most provisions (citizenship, elections, provisional Parliament) coming into force immediately, while the bulk of the document commenced on 26 January 1950, the date India became a sovereign democratic republic.
Prelims frequently tests dates (first meeting, adoption, commencement), the composition and reduction of Assembly strength after Partition, and which committee was chaired by whom. Mains rewards discussing the Assembly's representative character (and its limits, given indirect election and princely-state nomination) as part of debates on constituent power and legitimacy.
