An Electronic Voting Machine (EVM) is a device that records voter choices electronically and stores or transmits the tally digitally. EVMs typically fall into two broad categories: Direct Recording Electronic (DRE) machines, where the voter selects candidates on a touchscreen or button interface and the vote is stored directly in machine memory, and optical scan systems, where a paper ballot is marked by the voter and then read electronically.
India operates the world's largest EVM-based electoral system. The Election Commission of India introduced EVMs experimentally in 1982 in the Paravur constituency of Kerala, and they have been used nationwide in general elections since 2004. Indian EVMs are manufactured by Bharat Electronics Limited (BEL) and Electronics Corporation of India Limited (ECIL) and consist of a Control Unit and a Balloting Unit. Since 2013, a Voter Verifiable Paper Audit Trail (VVPAT) component has been progressively added to allow voters to confirm their choice on a printed slip.
In the United States, EVM adoption accelerated after the contested 2000 presidential election and passage of the Help America Vote Act (HAVA) of 2002, which provided federal funds to replace punch-card and lever machines. U.S. jurisdictions now predominantly use optical scanners with hand-marked paper ballots or ballot-marking devices, partly in response to security concerns about paperless DREs.
EVMs are debated globally on three axes:
- Security: vulnerability to tampering, malware, or supply-chain attacks.
- Verifiability: whether a voter-verifiable paper record exists for audits and recounts.
- Accessibility: support for voters with disabilities or limited literacy.
Germany's Federal Constitutional Court ruled in March 2009 that the EVMs then in use were unconstitutional because the voting process was not sufficiently transparent to ordinary citizens without specialist knowledge. The Netherlands abandoned EVMs in 2007 for similar reasons. Brazil, by contrast, has used EVMs nationwide since 2000 and conducts public security tests through its Superior Electoral Court.
Example
In India's 2024 general election, roughly 970 million registered voters used EVMs with VVPAT slips across more than one million polling stations administered by the Election Commission of India.
Frequently asked questions
There is no single answer. EVMs reduce certain manual errors and speed up counting, but paperless systems lack an independent audit trail. Most election-security experts recommend EVMs paired with a voter-verifiable paper record and risk-limiting audits.
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