How Reservations Shape Indian Politics

India's system of reservations — constitutionally mandated preferences in government employment, educational admissions, and electoral seats for Scheduled Castes, Scheduled Tribes, and (since 1992) Other Backward Classes — is simultaneously an anti-discrimination policy, a democratic representation mechanism, and the most politically charged policy domain in Indian governance. 

Reservations exist because historical caste-based exclusion prevented SCs and STs from accumulating the human capital, social capital, and economic resources that upper-caste groups had accumulated over centuries; reservations are designed to accelerate convergence by guaranteeing access to state institutions independent of caste networks. 

Representational Image: How Reservations Shape Indian Politics

Their political salience is extraordinary: reservation policy has toppled governments, generated mass protest movements, and restructured party coalition arithmetic in ways that reshape every election cycle.

The Mandal Commission's 1980 recommendations — that 27% of Union government jobs and educational seats be reserved for OBCs — were implemented in 1990 by V.P. Singh's government as an explicitly political move to consolidate OBC support. 

The resulting "Mandal politics" restructured Indian electoral competition more than any single policy since independence: it mobilised OBCs as a political category, created the BSP and SP as explicitly OBC/Dalit parties, produced the "Mandalisation" of state politics (Bihar, UP, and other Hindi belt states began electing OBC and Dalit Chief Ministers for the first time), and prompted a counter-mobilisation among upper castes that significantly contributed to BJP's expansion. 

Thirty-five years after implementation, OBC reservation remains the central political reference point around which caste coalition politics organises.

What You Need to Know

• Article 15(4) and Article 16(4) of the Constitution enable the state to make "special provisions" for the advancement of educationally and socially backward classes and SCs/STs; the 93rd Constitutional Amendment (2005) enabled reservations in private educational institutions; the EWS (Economically Weaker Sections) Amendment (103rd Amendment, 2019) provided 10% reservation for upper castes below an income threshold — the first expansion of reservation to non-historically-disadvantaged groups.
• The Supreme Court in Indra Sawhney v. Union of India (1992) imposed a 50% ceiling on total reservations (SC+ST+OBC combined cannot exceed 50% in any given institution or government employment); states that have enacted reservations exceeding this ceiling (Tamil Nadu at 69%, Maharashtra's Maratha reservation) have faced judicial challenges.
• The Bihar caste census (2023) found OBCs constitute approximately 63% of Bihar's population, well above the 27% OBC reservation quota in Union government employment; this data has fuelled demands across India for a national caste census to determine whether reservation quotas are proportional to actual community population shares.
• The 2025 Supreme Court consideration of whether the 50% ceiling can be revisited remains ongoing; several petitions seek proportional reservation based on population data; the constitutional question of whether Indra Sawhney's ceiling is itself part of the basic structure has not been definitively settled.
• The 106th Constitutional Amendment (2023) reserved 33% of Lok Sabha and state assembly seats for women; it explicitly preserved existing SC/ST seat reservations within the women's quota (some SC/ST women-reserved seats); OBC women's reservation within parliamentary seats was not included, generating criticism from OBC political groups.

How It Works in Practice

1. Mandal as the defining political cleavage: Since 1990, every major party must position itself in relation to OBC reservation — support, expand, or oppose. BJP's strategy has been complex: it nominally supports existing OBC reservations while opposing their extension to new beneficiaries like Marathas, Patels, and Jats who demand entry into OBC categories; it has also expanded upward (EWS reservation) which represents reservation for upper castes as a political gesture without touching OBC quantum.

2. The creamy layer controversy: The Supreme Court excluded the "creamy layer" (OBCs with family income above a threshold) from OBC reservation benefits in Indra Sawhney; the application of the creamy layer principle to SC/ST reservation has been repeatedly considered and rejected by the court; the different treatment creates political tensions and legal ambiguity.

3. Sub-categorisation of SCs and OBCs: The Supreme Court in 2024 (State of Punjab v. Davinder Singh) permitted states to sub-categorise SCs for the purpose of reservation, allowing more targeted benefits to the most disadvantaged within the SC category; this judgment opened the way for states to give preference to historically more excluded sub-castes within the SC category, but also created new political divisions within SC communities.

4. New reservation demands: The Patel agitation in Gujarat (2015–16), the Maratha agitation in Maharashtra (2017, 2021, 2023), the Jat agitation in Haryana (2016), and the Gurjar agitation in Rajasthan represent economically advanced OBC-adjacent communities demanding reservation. These agitations reflect the political logic of reservation: if reservation provides material benefits (government jobs, educational seats) and political recognition, communities outside the OBC/SC/ST categories have strong incentives to seek inclusion.

5. The political arithmetic of reservation politics: All major parties compete for OBC vote share by demonstrating their commitment to OBC interests. BJP's OBC outreach — featuring OBC leaders in prominent Cabinet positions, scheduling OBC-targeted welfare schemes, and now committing to a caste census — reflects this arithmetic. Congress's commitment to the caste census as its 2024 election promise was explicitly designed to mobilise OBC sentiment around the argument that existing reservation quotas underrepresent OBC population share.

What People Often Misunderstand

• Reservation is not "merit vs quota" — it corrects for pre-existing structural exclusion: The argument that reservations compromise merit assumes that the unreserved system produces merit-based outcomes; in a society with caste networks, social capital, and inherited advantage, this assumption is false; reservations are one tool for correcting systematic merit-suppression in lower castes.
• The 50% ceiling is judicial, not constitutional: The Indra Sawhney ceiling was imposed by the Supreme Court's interpretation; it is not written in the Constitution; courts can revisit judicial precedents; the question of whether the ceiling reflects the Constitution's equality and advancement provisions, or contradicts them, is genuinely open.
• OBC reservation at 27% is significantly less than OBC population share: National surveys estimate OBCs at 40–52% of India's population; the 27% Union government quota represents under-proportional reservation; the caste census debate is partly about confirming this gap with official data.
• Reservation has produced measurable social mobility: Academic research consistently finds that reservation beneficiaries have higher educational attainment, income levels, and political representation than they would have without reservation; the policy has worked in creating upward mobility, though its benefits are concentrated in better-positioned communities within the SC/ST/OBC categories.
• The EWS reservation for upper castes is constitutionally contested: The 103rd Amendment providing 10% EWS reservation for economically weak upper castes was challenged before the Supreme Court; the Court upheld it 3:2 in 2022; the dissenting judges argued it violated the basic structure by using economic criterion alone without historical exclusion; the political question of whether upper caste economic poverty is equivalent to structural caste exclusion remains contested.

What Changes Over Time

The announcement of a caste census alongside the 2026 general census — Home Minister Shah's Lok Sabha statement in April 2026 — is the most significant recent development. If caste data shows OBCs at 55–60% of the population and SCs/STs at their roughly 25% combined share, the political pressure for reservation expansion beyond current limits will be irresistible; this data will arrive in the context of the 2029 election cycle and may produce the most significant reservation policy change since Mandal.

Sources and Further Reading

• Carnegie Endowment — The Fourth Party System: https://carnegieendowment.org/research/2024/09/india-election-bjp-party-politics
• PIB — Home Minister on caste census and delimitation bills: https://www.pib.gov.in/PressReleasePage.aspx?PRID=2252748&reg=3&lang=2
• Sociology.Institute — Caste and Indian Politics: https://sociology.institute/india-democracy-development/caste-influence-indian-politics-society/
• ADR — Caste returns to centre stage in 2024: https://adrindia.org/content/caste-returns-centre-stage-2024-lok-sabha-election

(This series is part of a long-term editorial project to explain the institutions, ideas, actors, and power structures that shape political life in India. Designed as a 25-article briefing cluster on Indian Politics, Elections & Political Power, this vertical examines how electoral democracy functions in practice — from voting systems, political parties, caste coalitions, campaign finance, and the Election Commission to ideological movements, opposition politics, coalition-building, and the exercise of political power at both national and state levels. Written in an accessible format for diplomats, investors, researchers, academics, journalists, students, policymakers, civil society organisations, and international observers, the series seeks to explain not only how India's political system is formally structured, but also how political competition, representation, and governance operate in reality. This is Vertical 5 of a larger 20-vertical knowledge architecture being developed by IndianRepublic.in under the editorial direction of Saket Suman. All articles are protected under applicable copyright laws. All Rights Reserved.)