---
title: "Article 330: SC/ST Seat Reservation in Lok Sabha"
description: "Article 330 reserves Lok Sabha seats for SCs and STs based on their population, making it essential for understanding India's political representation."
url: "https://modeldiplomat.com/learn/glossary/article-330-reservation-of-seats-in-lok-sabha"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- Article 330 of the Constitution of India reserves seats in the Lok Sabha for Scheduled Castes and Scheduled Tribes in proportion to their population.
- How is the number of reserved seats under Article 330 calculated?
- What is the difference between Article 330 and Article 332?
- Is reservation under Article 330 permanent?
- Can non-SC/ST voters vote in reserved constituencies?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

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Example

In the 2019 general election, the Election Commission of India conducted polling across 84 Scheduled Caste-reserved and 47 Scheduled Tribe-reserved Lok Sabha constituencies under Article 330, including SC-reserved seats such as Lalganj in Uttar Pradesh.

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