Special Provisions for Classes, Reservations & Elections

Articles 330–342A govern reservations for SCs, STs and OBCs in legislatures and services. From the Mandal Commission to the 103rd Amendment's EWS quota and the Supreme Court's landmark Davinder Singh 2024 ruling on sub-classification — this is one of the highest-yield topics in UPSC GS-II. Delimitation Commission and the RPA 1950/1951 complete the electoral framework.

UPSC Prelims · Mains GS-II Laxmikanth Ch. 35, 59, 72 ~22 min read Arts 330–342A 103rd, 104th, 105th Amendments

Conceptual Clarity
Arts 330–342A: Article-by-Article
Reservation Architecture
Historical Evolution & Key Amendments
Landmark Cases
Sub-Categorisation within SCs
Diagram A: Reservation Timeline
Diagram B: Reservation Breakdown
Delimitation Commission
Diagram C: Delimitation Process
RPA 1950 & RPA 1951
Prelims PYQs
Mains PYQs
Revision Box — 4 UPSC Traps

Conceptual Clarity — Why Part XVI Exists

Part XVI of the Constitution (Arts 330–342A) creates special provisions for certain classes — SCs, STs, OBCs, and the now-removed Anglo-Indian community. These are exceptions to the general equality principle of Arts 14–16, constitutionally permitted to correct historical injustices. The framers intended reservations as a temporary measure (Art. 334 originally set a 10-year limit), but successive amendments have extended them. The 103rd Amendment 2019 added a new category — Economically Weaker Sections (EWS) — going beyond caste-based criteria for the first time.

Arts 330–333: Reservation of seats in Parliament and State Assemblies.
Arts 334–337: Duration and scope of special provisions (many phased out for Anglo-Indians by 104th Amendment 2020).
Arts 338–342A: National Commissions for SC/ST/OBC and Presidential notification of SC/ST/OBC lists.
Arts 82, 170: Delimitation — readjustment of parliamentary and assembly seats after Census.

1. Articles 330–342A: Article-by-Article

1.1 Reservation of Seats in Legislatures

Article	Provision	Key Points
Art. 330	Reservation of seats for SCs and STs in Lok Sabha	Seats reserved in proportion to SC/ST population in each state/UT. Currently: SC = 84 seats, ST = 47 seats in 543-seat LS.
Art. 331	Representation of Anglo-Indian community in LS	Removed by 104th Amendment 2020. President could nominate up to 2 Anglo-Indians to LS if not adequately represented. Ceased after 25 January 2020.
Art. 332	Reservation of seats for SCs and STs in State Assemblies	Similar to Art. 330 — proportional reservation for SCs/STs in each state Vidhan Sabha. Includes Arunachal Pradesh ST reservation specifics.
Art. 333	Representation of Anglo-Indian community in State Assemblies	Removed by 104th Amendment 2020. Governors could nominate one Anglo-Indian member to State Assemblies. Ceased from 25 January 2020.

1.2 Duration and Scope of Special Provisions

Article	Provision	Key Points
Art. 334	Reservation to cease after specified period	Originally 10 years (1960). Extended by successive amendments: 40 years (1990), 50 years (2000), 60 years (2010), 80 years — to 2030 by 104th Amendment 2020. Applies to Arts 330, 332 and nomination of Anglo-Indians.
Art. 335	Claims of SCs and STs to services and posts	Claims shall be taken into consideration consistently with the maintenance of efficiency of administration. Art. 335 was amended by 82nd Amendment 2000 to allow relaxation of qualifying marks/standards for SC/ST in promotions.
Art. 336	Special provision for Anglo-Indian community in services	Removed by 104th Amendment 2020. Provided for Anglo-Indians in railway, customs, postal, telegraph services — phased out over 10 years originally.
Art. 337	Special provision for Anglo-Indian community in educational grants	Phased out — Anglo-Indians entitled to grants-in-aid from Central/State Government for educational institutions. Provision was to diminish by 10% each year over 10 years. Effectively spent its force by 1960 but not formally repealed by 104th Amendment (unlike Arts 331, 333, 336).

1.3 National Commissions and Presidential Notifications

Article	Provision	Key Points
Art. 338	National Commission for Scheduled Castes (NCSC)	Constitutional body; investigates and monitors safeguards for SCs. Covered in detail in Topic 26.
Art. 338A	National Commission for Scheduled Tribes (NCST)	Constitutional body; added by 89th Amendment 2003 (bifurcating the earlier combined SC/ST Commission). Covered in Topic 26.
Art. 338B	National Commission for Backward Classes (NCBC)	Added by 102nd Amendment 2018; given constitutional status. Covered in Topic 26.
Art. 339	Control of Union over administration of Scheduled Areas and welfare of STs	President may appoint a Commission to report on administration of Scheduled Areas and welfare of STs at any time (mandatory after 10 years). Parliament may give directions to states on welfare of STs.
Art. 340	Appointment of a Commission to investigate backward classes	President may appoint a Commission to investigate conditions of socially and educationally backward classes and the difficulties they face. Commission's report is laid before Parliament. Mandal Commission was appointed under this Article.
Art. 341	Scheduled Castes	President (after consultation with Governor for a state) specifies castes, races, tribes or parts thereof deemed to be SCs by public notification. Parliament may by law include or exclude from the list. President's notification cannot be altered except by Parliament.
Art. 342	Scheduled Tribes	Same procedure as Art. 341 — President notifies STs (after consulting Governor); Parliament may include/exclude. No executive order can amend the Presidential list.
Art. 342A	Socially and Educationally Backward Classes (OBCs)	Added by 102nd Amendment 2018. President notifies central OBC list; Parliament may include/exclude. State OBC lists exist separately. 105th Amendment 2021 inserted Art. 342A(3) restoring states' power to maintain their own OBC lists.

Key distinction — Art. 341 vs Art. 342A: For SCs and STs (Arts 341–342), the President notifies after consulting the Governor. For OBCs (Art. 342A), the President notifies for the central list. The state list for OBCs is maintained by states under Art. 342A(3) (inserted by 105th Amendment 2021). Parliament can include/exclude from all three lists.

2. Reservation Architecture — The Complete Framework

2.1 Constitutional Enabling Provisions

Article	Provision	Added by
Art. 15(4)	State may make special provisions for advancement of socially/educationally backward classes or SCs/STs	1st Amendment 1951
Art. 15(5)	State may make special provisions for backward classes/SCs/STs in admission to educational institutions (including private unaided institutions)	93rd Amendment 2005
Art. 15(6)	State may make special provisions for advancement of EWS (Economically Weaker Sections) — up to 10% reservation; excluding SC/ST/OBC already covered	103rd Amendment 2019
Art. 16(4)	State may make provision for reservation of appointments/posts in favour of backward classes not adequately represented in state services	Original (1950)
Art. 16(4A)	State may make provision for reservation in matters of promotion to SC/ST employees	77th Amendment 1995
Art. 16(4B)	Unfilled reserved vacancies of a year treated as a separate class — carry-forward rule not subject to 50% ceiling	81st Amendment 2000
Art. 16(6)	State may make provision for reservation of appointments for EWS — up to 10%	103rd Amendment 2019

2.2 Current Reservation Percentages (Central Government)

Category	Percentage	Constitutional Basis	Creamy Layer?
Scheduled Castes (SCs)	15%	Art. 16(4) + Art. 341	No (Indra Sawhney 1992)
Scheduled Tribes (STs)	7.5%	Art. 16(4) + Art. 342	No (Indra Sawhney 1992)
Other Backward Classes (OBCs)	27%	Art. 16(4) + Mandal; Art. 342A	Yes — Indra Sawhney 1992
EWS (Economically Weaker Sections)	10%	Arts 15(6) + 16(6) — 103rd Amdt 2019	No — criteria: annual income below 8 lakh, land/property norms
Total = 59.5%		SC+ST+OBC = 49.5% (within 50% ceiling); EWS 10% upheld above ceiling

UPSC Trap — 50% ceiling: The Indra Sawhney 1992 ruling held that reservations should ordinarily not exceed 50% of total posts. This ceiling applies to SC+ST+OBC reservations. The 103rd Amendment's 10% EWS quota takes total reservation to 59.5%. The Supreme Court (Janhit Abhiyan 2022) upheld EWS reservation 5:3, holding the 50% ceiling is not inviolable when a separate, distinct class (EWS) not previously covered is being provided for.

3. Historical Evolution — Key Amendments & Commissions

3.1 Commissions on Backward Classes

Commission	Year	Outcome
Kaka Kalelkar Commission	1953 (reported 1955)	First OBC Commission under Art. 340. Recommended 70% reservation. Report rejected by the government — Kalelkar himself expressed reservations about caste as sole criterion.
Mandal Commission (B.P. Mandal)	Appointed 1978; report submitted 1980	Identified 3,743 OBC castes = 52% of population. Recommended 27% OBC reservation in central government services. Report shelved until VP Singh government implemented it in August 1990. Triggered massive agitations.

3.2 Constitutional Amendments — Chronological

Amendment	Year	What It Did
1st Amendment	1951	Added Art. 15(4) — enabled state to make special provisions for backward classes/SCs/STs. Overruled State of Madras v. Champakam Dorairajan (1951) which struck down Madras communal reservation.
77th Amendment	1995	Added Art. 16(4A) — reservation in promotions for SCs and STs. Response to SC ruling that Art. 16(4) did not cover promotions.
81st Amendment	2000	Added Art. 16(4B) — carry-forward of unfilled reserved vacancies. Such "backlog" vacancies treated as a separate class, not subject to 50% ceiling.
82nd Amendment	2000	Added proviso to Art. 335 — states may relax qualifying marks and standards of evaluation in matters of reservation in promotions for SCs/STs.
85th Amendment	2001	Art. 16(4A) amended — consequential seniority for SC/ST promotees given with retrospective effect from 1995.
89th Amendment	2003	Bifurcated the combined NCSC/NCST — created separate NCST under Art. 338A.
93rd Amendment	2005	Added Art. 15(5) — reservation in private unaided educational institutions for backward classes/SCs/STs (for admissions, not employment).
102nd Amendment	2018	Added Art. 338B (constitutional status to NCBC) and Art. 342A (Presidential notification of OBC list).
103rd Amendment	2019	Added Arts 15(6) + 16(6) — 10% EWS reservation for economically weaker sections not covered under SC/ST/OBC. Upheld by SC in Janhit Abhiyan 2022 (5:3).
104th Amendment	2020	Removed Arts 331, 333, 336 (Anglo-Indian nomination); extended Art. 334 duration of SC/ST seat reservation to 2030 (80 years from commencement).
105th Amendment	2021	Added Art. 342A(3) — restored states' power to prepare state OBC lists independently. Overruled narrow reading of 102nd Amendment in Maratha case that had implied only Parliament could notify OBCs.

4. Landmark Cases — Reservation Jurisprudence

4.1 Foundational Cases

Case	Year	Key Holding
State of Madras v. Champakam Dorairajan	1951	SC struck down Madras communal G.O. reserving seats in medical colleges. Led directly to 1st Amendment adding Art. 15(4).
M.R. Balaji v. State of Mysore	1963	SC held reservation above 50% unconstitutional; reservation cannot be the rule, it must be the exception.
Indra Sawhney v. Union of India (Mandal Case)	1992	Landmark 9-judge bench ruling: (1) 50% ceiling on reservations; (2) Creamy layer must be excluded from OBC reservations; (3) No reservation in promotions (Art. 16(4) covers only initial appointments); (4) Economic criterion alone is insufficient for identifying backward classes; (5) Separate reservation for "Most Backward Classes" within OBCs permissible. [77th Amendment 1995 then overruled part (3) for SC/ST by adding Art. 16(4A).]
M. Nagaraj v. Union of India	2006	Upheld Arts 16(4A) and 16(4B) (promotion reservations); but states must collect data on backwardness, inadequate representation, and show reservation does not affect overall efficiency. "Compelling reasons" test.
Jarnail Singh v. Lachhmi Narain Gupta	2018	Overruled Nagaraj's requirement that states collect quantifiable data on backwardness for SC/ST (since SCs/STs are already nationally identified). But confirmed creamy layer applies to promotions as well.
Maratha Reservation Case (Dr. Jaishri Laxmanrao Patil v. Chief Minister)	2021	5-judge bench struck down Maharashtra's 16% SEBC (Maratha) reservation. Also held that 102nd Amendment (Art. 342A) had taken away states' power to independently prepare OBC lists. Led to 105th Amendment 2021 restoring state power.
Janhit Abhiyan v. Union of India (EWS Case)	2022	5-judge bench upheld 103rd Amendment's 10% EWS reservation by 3:2 majority (not 5:3 — technically 3 upheld fully, 2 dissented; reported as 3:2 on key issues). Held that EWS forms a separate class; exclusion of SC/ST/OBC from EWS does not violate equality; 50% ceiling is not an inviolable rule.

Indra Sawhney 1992 — 5 key rules to memorise:

50% ceiling on total reservations (for SC+ST+OBC combined)
Creamy layer must be excluded from OBC benefits — not applicable to SCs/STs
No reservation in promotions under Art. 16(4) — overruled by 77th Amdt for SC/ST
Economic criterion alone insufficient for backward class identification
Annual review of OBC list — stagnant backward class should be removed from list

5. Sub-Categorisation within SCs — Davinder Singh 2024

5.1 The Legal Journey

E.V. Chinnaiah v. State of Andhra Pradesh (2004): 5-judge bench held that SCs form a homogeneous group — states cannot sub-classify within SCs for giving preferential reservation to certain sub-castes. Doing so would amount to tinkering with the Presidential list under Art. 341.
State of Punjab v. Davinder Singh (2024): 7-judge Constitution Bench (Chief Justice D.Y. Chandrachud presiding) — overruled EV Chinnaiah (2004) by 6:1 majority. Held that states CAN sub-classify within the SC list to give preferential treatment to more backward sub-castes within the SC category. This does not amount to modifying the Presidential list under Art. 341.

5.2 Key Ratio of Davinder Singh 2024

SCs are not a homogeneous group — there are varying degrees of backwardness among different castes within the SC list.
Sub-classification is a means to ensure that benefits reach the "most backward among the backward" — the intent of reservation.
Sub-classification must be based on empirical evidence — states cannot sub-classify arbitrarily; must show inadequate representation of the sub-group.
Creamy layer within SCs: Justice B.R. Gavai (concurring) said the creamy layer principle should also apply to SCs and STs. This question was referred to a larger bench — not yet finally decided.
The judgment does not allow states to create a new sub-caste list or exclude any caste from the Presidential list — the power of Art. 341 notification remains with President/Parliament.

Constitutional implication of Davinder Singh 2024: States like Punjab (Balmiki and Mazhabi Sikh sub-groups), Andhra Pradesh, and Tamil Nadu had already legislated sub-classification laws. These are now constitutionally validated (subject to the empirical data requirement). The question of creamy layer within SCs — if a larger bench answers affirmatively — could fundamentally alter SC reservation policy.

6. Diagram A — Reservation Evolution Timeline

Fig 35.A — Reservation policy evolution: Key milestones from 1950 to Davinder Singh 2024

7. Diagram B — Reservation Categories Breakdown

Fig 35.B — Reservation percentages, creamy layer applicability and key constitutional provisions

8. Delimitation Commission

8.1 Constitutional Basis

Art. 82: After each Census, Parliament shall by law provide for readjustment of allocation of seats in LS and division of each state into territorial constituencies. Comes into effect after commencement of the relevant Act.
Art. 170: Same provision for State Legislative Assemblies — readjustment after each Census.
Art. 329: No court shall question the validity of any law relating to delimitation of constituencies made or purporting to be made under Arts 82 or 170. Delimitation Commission orders are final and not challengeable in court.

8.2 Delimitation Commission — Structure

Set up by Parliament under the Delimitation Act, 2002.
Composition: (1) A retired judge of the Supreme Court (Chairperson); (2) Chief Election Commissioner; (3) State Election Commissioner (for state delimitation).
Commission is an independent body — not under any Ministry.
Associate members from Parliament/State Assemblies are attached but have no voting rights.
Orders published in the Gazette — take effect on a date specified by the President.
Orders are final — cannot be called in question before any court (Art. 329(a)).

8.3 History of Delimitations in India

Year	Census Basis	Key Development
1952	1951 Census	First delimitation after independence.
1963	1961 Census	Second delimitation.
1973	1971 Census	Third delimitation — seats increased to 543 in LS.
Frozen: 1976–2001	42nd Amendment 1976	Froze delimitation until 2001 Census — to prevent states with better family planning performance from losing seats.
2002	2001 Census	Fourth delimitation — boundaries redrawn; reserved constituencies rotated. Total seats frozen at 543 (LS) and existing state assembly totals by 84th Amendment 2001.
Frozen again: 2001–2026	84th Amendment 2001	Total number of seats in LS and VAs frozen until first Census after 2026. So number of seats unchanged since 1977.
Next delimitation	Post-2026 Census	Expected to increase seats significantly — from 543 to possibly 753+ in LS. Southern states fear seat reduction due to lower population growth compared to northern states.

8.4 Delimitation Controversy — South vs North

The upcoming delimitation is politically charged because southern states (Tamil Nadu, Kerala, Karnataka, Andhra Pradesh, Telangana) have achieved better population control than northern states (UP, Bihar, MP, Rajasthan). Delimitation based on population will:

Increase seats in north Indian states (UP, Bihar) — rewarding higher fertility rates.
Reduce relative share of seats for southern states — penalising successful population control.
Shift political weight significantly northward in Parliament.
Southern states argue this is constitutionally unfair and acts as disincentive for population control.

Current Affairs: The Census (delayed from 2021 due to COVID) has not yet been conducted as of 2026. Delimitation cannot proceed until the Census is complete. The freeze under 84th Amendment continues until the first Census after 2026 is completed and notified.

9. Diagram C — Delimitation Process

Fig 35.C — Delimitation process flow: Census to implementation; Art. 329 bar on court challenge

10. Representation of the People Acts — RPA 1950 & RPA 1951

10.1 RPA 1950 — Electoral Rolls and Voter Qualifications

RPA 1950 deals with allocation of seats, delimitation of constituencies, and electoral rolls.

Voter Qualification (Electoral Roll)

Every person who is a citizen of India, is not less than 18 years of age, and is ordinarily resident in a constituency is entitled to be registered in the electoral roll of that constituency.
Reduced from 21 years to 18 years by 61st Constitutional Amendment 1988.
A person disqualified under any law made by Parliament (e.g., unsound mind, election offences) shall not be registered.

Electoral Registration Officers

Each constituency has an Electoral Registration Officer (ERO) — typically the District Magistrate/Collector.
EROs prepare and revise electoral rolls under the superintendence, direction, and control of the Election Commission of India (Art. 324).
Rolls are revised annually (Summary Revision) and special revision may be ordered by ECI.

10.2 RPA 1951 — Conduct of Elections

RPA 1951 is the primary legislation governing conduct of elections, corrupt practices, disqualifications, and election petitions.

Corrupt Practices (Section 123, RPA 1951)

Bribery: Giving or accepting gratification to induce voting.
Undue Influence: Threats or coercion to prevent free exercise of vote.
False Statement of Facts: Publishing false statements about a candidate's character or conduct.
Booth Capturing: Seizing polling stations to stuff ballot boxes or intimidate voters.
Promotion of Enmity: Appeals on grounds of religion, race, caste, community or language.
Hiring of Vehicles: For conveying voters to/from polls.

Electoral Offences (Sections 125–136, RPA 1951)

Impersonation: Fraudulently voting in another's name.
Promoting enmity between classes in connection with elections.
Illegal payments in connection with elections.

Disqualification of Candidates (Section 8, RPA 1951)

A person convicted of an offence and sentenced to imprisonment of 2 years or more is disqualified from contesting for a period of 6 years after release.
Disqualification applies to both sitting members and candidates.
A sitting MP/MLA convicted and sentenced to 2+ years must vacate their seat — Lily Thomas v. Union of India (2013) — SC struck down the provision that allowed convicted members to retain seats during appeal if they filed within 3 months.
Section 8(4) which allowed sitting members to continue was struck down in Lily Thomas case. Now conviction = immediate disqualification, regardless of appeal.

Election Petitions

An election petition challenging the election of a returned candidate is filed before the High Court of the relevant state.
Petition must be filed within 45 days of declaration of election results.
Appeal against HC order lies to the Supreme Court of India.
Grounds: corrupt practice, improper acceptance/rejection of nomination, non-compliance with election law.

By-Elections

When a seat falls vacant (death, resignation, disqualification), a by-election must be held within 6 months of the date the vacancy occurs.
Exception: If remainder of term is less than 1 year, or ECI in consultation with Central Government decides it is not necessary.

10.3 RPA 1950 vs RPA 1951 — Quick Comparison

Feature	RPA 1950	RPA 1951
Deals with	Allocation of seats, delimitation, electoral rolls, qualifications of voters	Conduct of elections, corrupt practices, disqualifications of candidates, election petitions
Key authority	Electoral Registration Officers (EROs) under ECI superintendence	Returning Officers, ECI, courts
Voter age	18 years (after 61st Amendment 1988)	Candidate qualifications separately prescribed
Corruption	Not covered	Section 123 — 6 corrupt practices defined
Disputes	Electoral roll disputes — ERO/ECI	Election petitions — High Court; appeal to SC
Disqualification	For being on voter rolls (unsound mind etc.)	For contesting — Section 8 (2 year sentence = 6 year bar)

11. Prelims PYQs (2016–2025)

Prelims 2021

With reference to Article 334 of the Constitution, the reservation of seats for SCs and STs in Parliament and State Legislatures was extended to 2030 by which Constitutional Amendment?
Answer: 104th Constitutional Amendment Act, 2020 — extended reservation of seats for SC/ST in LS and State Assemblies (under Arts 330, 332) and the period under Art. 334 to January 2030 (80 years from Constitution's commencement in 1950). Not to be confused with 2020 as the end year — the amendment was passed in 2020 but the reservation runs until 2030.

Prelims 2022

Consider the following statements about Indra Sawhney v. Union of India (1992): (1) The Supreme Court upheld the 27% OBC reservation. (2) The court held that the creamy layer should be excluded from OBC reservation. (3) The court held that reservations can be extended to promotions under Article 16(4). Which of the above statements are correct?
Answer: (1) and (2) only — The SC upheld 27% OBC reservation and mandated exclusion of creamy layer. Statement (3) is wrong — the SC in Indra Sawhney held that Art. 16(4) does not cover promotions (this was later overruled for SC/ST by 77th Amendment 1995 adding Art. 16(4A)).

Prelims 2020

The 103rd Constitutional Amendment Act 2019 inserted which of the following articles to provide for 10% reservation to Economically Weaker Sections?
Answer: Articles 15(6) and 16(6). Art. 15(6) enables states to make special provisions for EWS in admission to educational institutions (including private unaided). Art. 16(6) enables states to reserve appointments/posts for EWS in public employment. Both cap EWS reservation at 10%.

Prelims 2019

With reference to Article 341 of the Constitution, consider: (1) President specifies the list of Scheduled Castes after consultation with the Governor for a state. (2) Parliament may by law include or exclude from the list. (3) The President may by executive order modify the Presidential notification. Which of the above is/are correct?
Answer: (1) and (2) only — Statement (3) is incorrect. Once the Presidential notification is issued, it can only be modified by Parliament by law — not by Presidential executive order. This is a classic UPSC trap.

Prelims 2023

With reference to the Delimitation Commission in India, which of the following is correct? (1) Its orders are final and not subject to challenge before any court. (2) It is a permanent constitutional body. (3) Its orders are subject to approval by Parliament.
Answer: (1) only — Under Art. 329, no court shall question the validity of any delimitation order. The Commission is not a permanent body — it is set up as needed under the Delimitation Act. Orders do NOT require Parliamentary approval.

Prelims 2025

The Supreme Court of India in State of Punjab v. Davinder Singh (2024) held that: (a) States cannot sub-classify within Scheduled Castes (b) States can sub-classify within Scheduled Castes to give preferential treatment to more deprived sub-groups (c) Creamy layer applies to SCs and STs with immediate effect (d) The Presidential notification under Art. 341 can be modified by states.
Answer: (b) — The 7-judge bench by 6:1 majority overruled EV Chinnaiah (2004) and held that states CAN sub-classify within SCs. Creamy layer within SCs question was referred to a larger bench — not decided. States cannot modify Art. 341 Presidential notification.

Prelims 2024

The 105th Constitutional Amendment Act 2021 was enacted primarily to: (a) Increase OBC reservation to 33% (b) Restore the power of states to prepare their own OBC lists independently (c) Give constitutional status to the NCBC (d) Include new castes in the SC Presidential list.
Answer: (b) — 105th Amendment inserted Art. 342A(3) to restore states' independent power to prepare and maintain state OBC lists, after the Supreme Court in the Maratha case (2021) had interpreted 102nd Amendment as taking away this power. The constitutional status of NCBC was given by the 102nd Amendment 2018 (Art. 338B), not 105th Amendment.

Prelims 2017

Under the Representation of the People Act, 1951, an election petition challenging the election of a returned candidate shall be filed before:
Answer: The High Court having jurisdiction over the constituency. Not before the Election Commission, not before the Supreme Court directly. Appeal against HC order goes to the Supreme Court.

12. Mains PYQs (GS-II)

Mains GS-II 2019

"Critically examine the reservation policy in India with special reference to the 50% ceiling and creamy layer principles." (250 words)

Approach: Historical basis — Indra Sawhney 1992 as the constitutional bedrock: 50% ceiling to ensure merit is not completely submerged; creamy layer to ensure truly backward benefit. Critical analysis of ceiling: Indra Sawhney itself recognised extraordinary situations (exceptional remote areas — Tamil Nadu 69% upheld in 1994 with 9th Schedule protection); 103rd Amendment's EWS pushes total to 59.5% — upheld in Janhit Abhiyan 2022. Creamy layer: OBCs mandatorily; SC/ST not (yet) — Davinder Singh 2024 referred question to larger bench. Critique: perpetuation of caste identity; absence of periodic review; overlap between backward and forward castes economically; alternative approaches — socioeconomic deprivation index. Way forward: rationalise using data, implement sub-categorisation per Davinder Singh 2024, strengthen horizontal reservations for women/disabled.

Mains GS-II 2023

"The 103rd Constitutional Amendment providing 10% EWS reservation has been upheld by the Supreme Court. Analyse its constitutional implications." (250 words)

Approach: 103rd Amendment adds Arts 15(6) and 16(6) — economic criterion for reservation, departing from the caste-only approach. SC in Janhit Abhiyan 2022 (3:2 majority): upheld — EWS is a new class; exclusion of SC/ST/OBC from EWS does not violate equality (they have their own reservations); 50% ceiling not absolute. Constitutional implications: (1) First time economic criterion used — paradigm shift from social/educational backwardness; (2) Total reservation now 59.5% — strains the 50% ceiling principle; (3) EWS defined by income (8 lakh) and property — raises definitional and verification challenges; (4) No creamy layer concept for EWS — paradox with OBC logic; (5) Annual income cap vs caste-based identification — different verification mechanisms; (6) Implications for basic structure (equality) — minority view (Justices Bhat and Trivedi in dissent) said excluding SC/ST/OBC from EWS is discriminatory. Way forward: robust EWS income verification, periodic review of income threshold.

Mains GS-II 2024

"Sub-categorisation within Scheduled Castes — examine the Supreme Court judgment in Davinder Singh 2024 and its constitutional implications." (250 words)

Approach: Background — EV Chinnaiah 2004 held SCs a homogeneous group; states could not sub-classify. Davinder Singh 2024 (7-judge bench, 6:1) overruled EV Chinnaiah: (1) SCs are heterogeneous — different degrees of historical oppression within the category; (2) Sub-classification is permissible under Arts 15(4) and 16(4) — not equivalent to modifying Presidential list under Art. 341; (3) Must be based on empirical evidence — states cannot arbitrarily sub-classify; (4) Justice Gavai's concurrence: creamy layer should apply to SCs/STs — referred to larger bench. Constitutional implications: States like Punjab, Andhra Pradesh, Tamil Nadu can now legislate sub-classification; ensures most deprived SCs benefit; potential challenge to Art. 341 integrity — but court distinguished: sub-classification within list ≠ exclusion from list; pending creamy layer question could be transformative if answered affirmatively — would reduce SC/ST reservation beneficiaries significantly; concerns about political economy of reservation; need for empirical data collection by states.

Mains GS-II 2021

"Discuss the role of the Delimitation Commission in Indian democracy. Why is the upcoming delimitation controversial?" (250 words)

Approach: Role — Arts 82, 170: post-Census readjustment; ensures constituencies reflect demographic changes; prevents malapportionment (one vote one value); determines reserved constituencies under Art. 330/332. Composition (Delimitation Act 2002): retired SC judge + CEC + State EC. Orders are final — Art. 329 bar on courts. Controversy: (1) Freeze since 1977 on total seats (84th Amendment 2001, frozen till post-2026 Census) — when lifted, northern states with higher population growth (UP, Bihar) gain seats; (2) Southern states (TN, Kerala, Karnataka) fear loss of relative share despite better governance indicators; (3) Asymmetry: population control penalised — states that successfully implemented family planning policies lose political representation; (4) Federation implications — South contributes disproportionately to GDP and tax; reduced parliamentary weight aggravates cooperative federalism concerns; (5) One Nation One Election debate intersects: delimitation tied to synchronised election cycle. Balancing mechanisms considered: alternate formulas (economic contribution, development index, tax revenue) — not constitutionally mandated; amendment to Art. 81 needed. Current status: Census delayed (2021 Census not yet conducted as of 2026); no delimitation possible until Census is done and notified.

13. Revision Box — 4 Critical UPSC Traps

4 UPSC Traps You Must Not Fall Into

Trap 1 — Art. 334 and 2030 (NOT 2020): The 104th Constitutional Amendment Act was passed in 2020, but it extended the reservation of seats for SCs and STs under Art. 334 until 25 January 2030. Many students confuse the year of amendment (2020) with the expiry year (2030). Remember: 80 years from 26 January 1950 = 2030.

Trap 2 — Creamy Layer: OBCs ONLY, NOT SC/ST: The Indra Sawhney judgment (1992) held that the creamy layer exclusion applies to OBCs only. Scheduled Castes and Scheduled Tribes are NOT subject to creamy layer exclusion under existing law. The Davinder Singh 2024 concurrence raised this question for SCs/STs but referred it to a larger bench — it has NOT been decided yet.

Trap 3 — Delimitation Commission Orders: FINAL, No Court Challenge: Art. 329 categorically bars any court — including the Supreme Court — from questioning the validity of any delimitation order. The Delimitation Commission is not a quasi-judicial body whose orders can be appealed. This is a hard constitutional bar, not a procedural technicality.

Trap 4 — 105th Amendment (2021) Restored State OBC Power: Many confuse the 102nd Amendment (2018) and 105th Amendment (2021). The 102nd Amendment added Art. 342A (Presidential notification of OBC list) and Art. 338B (NCBC). The Maratha case (2021) interpreted 102nd Amendment as removing states' power to independently list OBCs. The 105th Amendment (2021) then restored this by adding Art. 342A(3), explicitly preserving state power to maintain their OBC lists.

Quick-fire Must-Remembers:

Articles Quick Reference:

Art. 330 — SC/ST seats in Lok Sabha
Art. 331 — Anglo-Indian (LS) — Removed 2020
Art. 332 — SC/ST seats in State Assemblies
Art. 334 — Reservation till 2030 (104th Amdt 2020)
Art. 335 — SC/ST claims consistent with efficiency
Art. 340 — OBC Commission (Mandal appointed under this)
Art. 341 — SC Presidential notification — only Parliament can amend
Art. 342 — ST Presidential notification — same as Art. 341
Art. 342A — OBC list (102nd Amdt); states restored by 105th Amdt

Amendments Quick Reference:

1st Amdt 1951 → Art. 15(4), 16(4) — enabled reservations
77th Amdt 1995 → Art. 16(4A) — reservation in promotions (SC/ST)
81st Amdt 2000 → Art. 16(4B) — carry-forward vacancies
84th Amdt 2001 → Froze LS seats till post-2026 Census
93rd Amdt 2005 → Art. 15(5) — private unaided institutions
102nd Amdt 2018 → Arts 338B + 342A (NCBC + OBC list)
103rd Amdt 2019 → Arts 15(6) + 16(6) — 10% EWS
104th Amdt 2020 → Removed Anglo-Indian; extended to 2030
105th Amdt 2021 → Art. 342A(3) — restored state OBC power

Key Cases:

Indra Sawhney 1992 — 50% ceiling; creamy layer for OBCs
M. Nagaraj 2006 — compelling reasons test for promo reservn
Janhit Abhiyan 2022 — EWS 10% upheld (3:2)
Davinder Singh 2024 — sub-classification within SCs upheld (6:1)
Lily Thomas 2013 — convicted member loses seat immediately

Item	Detail
SC seats (LS)	84 (of 543)
ST seats (LS)	47 (of 543)
Reservation till	2030 (104th Amdt)
SC reservation	15%
ST reservation	7.5%
OBC reservation	27%
EWS reservation	10% (103rd Amdt)
Total reservation	59.5%
50% ceiling case	Indra Sawhney 1992
Creamy layer	OBCs only (not SC/ST)
Voter age	18 years (61st Amdt 1988)
Election petition	High Court
Disqual. bar	2yr sentence → 6yr bar
By-election	Within 6 months
Last delimitation	2002 (2001 Census)
Delim. Commission	Retired SC Judge + CEC + State EC
Delim. orders	FINAL — Art.329 bars courts

Amendment	Year	Key Change
1st	1951	Art.15(4) added
77th	1995	Art.16(4A) promotions
81st	2000	Art.16(4B) carry-fwd
84th	2001	Seats frozen
102nd	2018	Art.342A + NCBC
103rd	2019	EWS 10%
104th	2020	Upto 2030; no Anglo-Indian
105th	2021	State OBC power restored

Special Provisions for Classes, Reservations & Elections

On this page

Conceptual Clarity — Why Part XVI Exists

1. Articles 330–342A: Article-by-Article

1.1 Reservation of Seats in Legislatures

1.2 Duration and Scope of Special Provisions

1.3 National Commissions and Presidential Notifications

2. Reservation Architecture — The Complete Framework

2.1 Constitutional Enabling Provisions

2.2 Current Reservation Percentages (Central Government)

3. Historical Evolution — Key Amendments & Commissions

3.1 Commissions on Backward Classes

3.2 Constitutional Amendments — Chronological

4. Landmark Cases — Reservation Jurisprudence

4.1 Foundational Cases

5. Sub-Categorisation within SCs — Davinder Singh 2024

5.1 The Legal Journey

5.2 Key Ratio of Davinder Singh 2024

6. Diagram A — Reservation Evolution Timeline

7. Diagram B — Reservation Categories Breakdown

8. Delimitation Commission

8.1 Constitutional Basis

8.2 Delimitation Commission — Structure

8.3 History of Delimitations in India

8.4 Delimitation Controversy — South vs North

9. Diagram C — Delimitation Process

10. Representation of the People Acts — RPA 1950 & RPA 1951

10.1 RPA 1950 — Electoral Rolls and Voter Qualifications

Voter Qualification (Electoral Roll)

Electoral Registration Officers

10.2 RPA 1951 — Conduct of Elections

Corrupt Practices (Section 123, RPA 1951)

Electoral Offences (Sections 125–136, RPA 1951)

Disqualification of Candidates (Section 8, RPA 1951)

Election Petitions

By-Elections

10.3 RPA 1950 vs RPA 1951 — Quick Comparison

11. Prelims PYQs (2016–2025)

12. Mains PYQs (GS-II)

13. Revision Box — 4 Critical UPSC Traps

4 UPSC Traps You Must Not Fall Into