What is Article 170?
Historical Background
Key Points
11 points- 1.
Each state's Legislative Assembly must have a maximum of 500 members and a minimum of 60 members. This range ensures that states, regardless of their size, have a representative body that is both functional and broad enough to reflect diverse opinions, preventing assemblies from becoming either unwieldy or unrepresentative.
- 2.
Members of the Legislative Assembly are chosen by direct election from territorial constituencies within the state. This provision is the cornerstone of popular sovereignty, ensuring that the people directly elect their representatives, making the government accountable to the electorate.
- 3.
The allocation of seats to states and the division of each state into territorial constituencies are done in such a manner that the ratio between the population of each constituency and the number of seats allotted to it is, as far as practicable, the same throughout the state. This ensures that each vote carries roughly equal weight, upholding the principle of "one person, one vote."
Visual Insights
Article 170 vs. Article 82: Delimitation of Constituencies
A comparative analysis of Article 170 (State Assemblies) and Article 82 (Lok Sabha) regarding delimitation.
| Feature | Article 170 (State Assemblies) | Article 82 (Lok Sabha) |
|---|---|---|
| Primary Focus | Allocation of seats and division of states into territorial constituencies for Legislative Assemblies. | Readjustment of allocation of seats to states in the Lok Sabha and division of each state into territorial constituencies. |
| Constitutional Basis | Article 170 | Article 82 |
| Basis of Population | Population as per the 2001 census (as per 87th Amendment, but freeze until post-2026) | Population as per the latest census (currently 1971, freeze until post-2026) |
| Delimitation Commission | Carried out by a Delimitation Commission constituted under the Delimitation Act, 2002. | Carried out by a Delimitation Commission constituted under the Delimitation Act, 2002. |
| Seat Strength | Total number of seats not less than 60 and not more than 500. | Total number of seats in Lok Sabha is fixed at 543 (currently). |
Recent Real-World Examples
3 examplesIllustrated in 3 real-world examples from Mar 2026 to Apr 2026
Source Topic
Delimitation Dilemma: The Political Challenges of Redrawing Electoral Boundaries
Polity & GovernanceUPSC Relevance
Frequently Asked Questions
151. In an MCQ on Article 170, what is the most common trap related to the census year for delimitation, and how should an aspirant avoid it?
The most common trap is confusing the census year used for freezing the *total number of seats* in a Legislative Assembly with the census year used for *redrawing constituency boundaries within* that state. The total number of seats for state assemblies is frozen based on the 1971 census until the first census after 2026. However, the internal redrawing of territorial constituencies *within* a state can be done based on a more recent census, such as the 2001 census, as seen in the recent Assam delimitation.
Exam Tip
Remember: 'Total Seats' = 1971 Census (frozen till 2026+). 'Internal Boundaries' = Latest Census (e.g., 2001). Always read the question carefully to identify if it asks about total seats or internal constituency demarcation.
2. Article 170 specifies a maximum of 500 and a minimum of 60 members for a Legislative Assembly. Are there any constitutional exceptions to these numbers, and if so, for which states?
Yes, there are constitutional exceptions to the minimum number of 60 members for Legislative Assemblies, primarily for smaller states, to ensure their representation despite their small population. These exceptions are enshrined in specific articles or acts related to their formation or special status. For example, Goa (40 members), Mizoram (40 members), Sikkim (32 members), and Puducherry (30 members) have fewer than 60 members, as provided under Articles like 371F (Sikkim) or specific Acts of Parliament.
