Electoral Integrity and Verification of Electronic Voting Machines (EVMs) with VVPAT Slips (CaseLaws)

Association for Democratic Reforms v. Election Commission of India and Another (2024 INSC 341)

Summary of the CaseLaw
The Supreme Court of India addressed a challenge to the integrity of the Electronic Voting Machine (EVM) system, specifically concerning the mandatory counting of Voter Verifiable Paper Audit Trail (VVPAT) slips.

Facts/Dispute: The petitioners—including the Association for Democratic Reforms—argued that despite the Election Commission of India's (ECI) claims, the EVM system remained susceptible to manipulation. To instil voter confidence, they requested that the Court direct:

A return to the paper ballot system.

Alternatively, the delivery of the printed VVPAT slip to the voter for placement in a ballot box for counting.

Alternatively, 100% counting and verification of VVPAT slips against the electronic count recorded by the Control Unit.

Key Legal Issues:
Whether the inherent design and safeguards of the EVM-VVPAT system are sufficient to ensure the accuracy and integrity of the election process.

Whether the Court should intervene to mandate 100% verification of VVPAT slips to satisfy the voters' right to know that their franchise has been correctly recorded and counted.

The Court held that: The Supreme Court rejected the pleas for a return to paper ballots and for 100% VVPAT verification, upholding its past precedents. The Court was satisfied that the current M3 EVMs are robust, non-networked, and contain security features like a one-time programmable (OTP) microcontroller chip that makes the firmware unalterable. However, to further enhance transparency and voter satisfaction, the Court issued the following directions:


Storage of Symbol Loading Units (SLUs): The ECI shall ensure that the SLUs used to load candidate symbols onto VVPATs are stored in a secured strong room for at least 45 days after the declaration of results, to be made available for judicial scrutiny if required.


Post-Results Microcontroller Verification: Upon a written request by a candidate and payment of a prescribed fee, the engineers of the EVM manufacturers (BEL/ECIL) must verify the burnt memory/microcontroller of 5% of the EVMs (Control Units and VVPATs) per assembly constituency/segment after the declaration of results. The verification expense will be forfeited if the EVM-VVPAT results match, but refunded if a mismatch is found.

Key Legal Principles Established:
Sufficient Integrity of EVM-VVPAT System: The system is inherently designed with rigorous safeguards (e.g., two-stage randomization, non-networked design, OTP memory, First Level Checks) to obviate wrongdoing, and the EVM-VVPAT count is considered reliable.


Unfounded Challenges are Detrimental to Democracy: Repeated and persistent doubts about the electoral process without cogent material are "execrable and undesirable" as they can reduce citizen confidence in the system.


Judicial Mandate for Enhanced Transparency: While affirming the system's core reliability, the judiciary can mandate additional steps to ensure greater satisfaction and confidence among political parties and the electorate.

Relevance:
This landmark judgment reaffirms the constitutional and procedural validity of the EVM-VVPAT system in India, providing a strong legal foundation against calls for a return to paper ballots or complete VVPAT counting. It is significant for introducing a new, specific mechanism for post-election audit by mandating the verification of EVM microcontrollers upon candidate request, thereby balancing the need for efficient elections with maximum post-result transparency.