Voter verifiable paper audit trail

Also called: VVPAT · Topic: Elections and the Electoral System · NCERT: Class 8, Ch 5 "Universal Franchise and India's Electoral System"; Class 9, Ch 7 "Elections"

Meaning

A Voter Verifiable Paper Audit Trail (VVPAT) is a printer joined to the electronic voting machine (EVM). After you vote, it prints a slip with the candidate's serial number, name and symbol. The slip shows behind a glass window for 7 seconds and then drops into a sealed box [2]. You cannot take it home.

It matters because it lets each voter check that the machine recorded the right choice. It also leaves a paper record that can be counted later to check the EVM's electronic count. VVPAT has been used in all constituencies since the 2019 Lok Sabha election.

Explanation

How it works at the booth

• The parts: an EVM has a control unit (kept with the Presiding Officer) and a ballot unit (kept inside the voting compartment) [2]. The VVPAT is the printer joined to them.

• Steps for one vote, in order: 1. The Presiding Officer presses the "BALLOT" button on the control unit. This lets the machine take one vote. 2. The voter presses the blue button next to their candidate on the ballot unit. 3. The VVPAT prints a slip. The slip stays behind the glass for 7 seconds [2]. 4. The slip falls into the sealed VVPAT box. 5. Only after the slip falls does the VVPAT signal the control unit to record the vote [4]. A beep tells the voter the vote has been recorded.

• Why the order matters: the paper record is made before the electronic vote is stored. So the slip and the stored vote should always match.

Symbol loading: how the printer knows the candidates

• The control unit does not know candidates' names or symbols. It records only which button was pressed [4].
• So the VVPAT needs its own copy of the names and symbols.
• 10-15 days before the poll, a symbol loading unit puts candidates' names and symbols into the VVPAT's flash memory as small picture files.
• This memory holds 4 MB [4].

Counting the slips: rules and limits

• Random check: slips are not counted at every polling station.
• At first, the slips of one EVM in each assembly segment were counted.

• Since 2019, slips of five randomly chosen EVMs (polling stations) per assembly segment are counted [4].

• When it happens: VVPAT slips are counted last, after the postal ballots (from 8 a.m.) and the EVM rounds. They are then matched with the EVM totals.

• Rule 56D (Conduct of Election Rules, 1961): counting the slips of other stations, step by step: 1. A candidate or their agent applies in writing to the Returning Officer (the officer in charge of counting and declaring the result) to count the slips of any polling station. 2. The Returning Officer gives a reasoned decision in writing. 3. If the paper count and the EVM count differ, the paper count wins. The result sheet (Form 20) is corrected [4].

• Limit: there is no 100% slip count. The Supreme Court refused it in 2024 [4].

In the Constitution and practice

• Legal base:
• s.61A, Representation of the People Act (RPA), 1951, added in 1988 and in force from 15 March 1989, allows voting by machine [3]. The VVPAT is an add-on to these machines.
• The Conduct of Election Rules, 1961 were amended on 14 August 2013 to bring in VVPAT [4]. Rule 56D governs counting the slips.

• The Election Commission of India (ECI) decides how VVPATs are used and counted.

• How it was rolled out:

Year	Event
2013	Subramanian Swamy v. ECI: the Supreme Court held that a "paper trail" is an indispensable requirement of free and fair elections [4]
2013	Rules amended on 14 August [4]. First use: 51-Noksen (ST) assembly by-election, Nagaland [3]
2014	Used in 8 Lok Sabha seats [3]
2019	Used in all constituencies from the 2019 Lok Sabha election
2019	N. Chandrababu Naidu v. Union of India: opposition parties asked for slips from 50% of EVMs to be counted. The Court instead raised the check from 1 to 5 EVMs per assembly segment [4]
2024	ADR v. Union of India (26 April 2024) [4]

• Association for Democratic Reforms v. Union of India (26 April 2024; Justices Sanjiv Khanna and Dipankar Datta):
• Rejected: the pleas to go back to paper ballots and to count 100% of VVPAT slips [4].
• Direction 1: after symbol loading (done on or after 1 May 2024), the symbol loading units are sealed and kept for 45 days after the result [4].
• Direction 2: a burnt-memory check (engineers check that the chip's factory-written software has not been changed) of 5% of EVMs, meaning the control unit, ballot unit and VVPAT, in each assembly segment [4]:
  • it is done by the makers' engineers (BEL and ECIL);
  • only the candidate who came 2nd or 3rd can ask for it;
  • the request must be made within 7 days of the result;
  • the candidate pays the cost, and gets it back if tampering is found.
• 45 days: EVMs stay sealed in strong rooms, and CCTV footage is kept, for 45 days. That is the time limit for filing an election petition (a case in the High Court challenging the result) [4].

Don't confuse with

• EVM (control unit + ballot unit): the EVM records and counts the vote. The VVPAT only prints a paper copy so the voter can check it. The legal vote count comes from the EVM, unless a VVPAT count under Rule 56D shows a difference.
• Tendered vote (Rule 42; Rule 49P for EVM polls): a paper ballot given to a real voter when someone else has already voted in their name. It is kept as evidence but never counted. A VVPAT slip is a copy of a real EVM vote, and the slips of selected stations are counted.
• Form 17C: the Presiding Officer's record of the total votes cast at a station, given to polling agents. It checks the number of votes. A VVPAT slip shows whom each vote went to.
• Burnt-memory check (ADR, 2024): a check of the machine's chip by engineers, done only if the 2nd- or 3rd-placed candidate asks. The VVPAT slip count checks the paper record and happens at every count for five stations per assembly segment.

Prelims Hooks

• First VVPAT use: 51-Noksen (ST) assembly by-election, Nagaland, 2013 [3]. Trap: first EVM use was Paravur, Kerala, 1982 [3], not 2013.
• Case–principle pairs:
• Subramanian Swamy (2013): paper trail is "indispensable" [4].
• Chandrababu Naidu (2019): slip check raised from 1 to 5 EVMs per assembly segment, not 50% [4].

• ADR (2024): no 100% VVPAT count; 5% burnt-memory check on request by the 2nd- or 3rd-placed candidate within 7 days [4].

• Rule 56D = counting of VVPAT slips. If it differs from the EVM count, the paper count wins and Form 20 is corrected [4].

• The slip shows for 7 seconds behind glass and then drops into a sealed box [2]. The voter does not take it away.
• Order: the VVPAT signals the control unit to record the vote only after the slip falls [4].
• Used in all constituencies since the 2019 Lok Sabha election. In 2014 it was used in only 8 Lok Sabha seats [3].

Mains Points

• Machine accuracy vs. voter trust:
• EVMs are standalone (not connected to any network) and one-time-programmable [4]. But voters must also believe the result. VVPAT lets each voter see their vote, and the paper count gives a check that does not depend on the machine.

• The debate is about how much random checking is enough. Critics want 100% slip counting. The Court in ADR (2024) said the present sample, Rule 56D and the new burnt-memory check are enough [4].

• Speed vs. full verification:

• Going back to paper ballots or counting every slip would bring back slow counting. It could also bring back the problems EVMs removed, such as invalid votes and booth capture.

• The steps taken (from 1 EVM to 5, then sealed symbol loading units and the burnt-memory check) show a step-by-step approach. More checks are added without giving up EVMs.

• Link to election petitions: sealed EVMs, sealed symbol loading units and CCTV footage are all kept for 45 days, the time limit for an election petition [4]. So a losing candidate has physical evidence to take to the High Court. This makes VVPAT part of the wider set of booth safeguards that protect "one person, one vote".

Related concepts

• Indelible ink
• Tendered vote
• Booth capturing
• Electronic voting machine
• NOTA
• NOTA case

Read more

• Polling and counting: EVMs, VVPAT and NOTA