Primary definition
A "BENCHMARK used in the VPP. The ratio of the number of containing no CAST BALLOTS erroneous votes over the number of cast ballots containing one or more errors (either a vote for an unintended choice, or a missing vote)." VVSG.
Also known asPBI · perfect ballot index (PBI) · ballot perfection index
1 sources cited4 related termsReviewed Aug 9, 2026
— Electronic Voting GlossaryView source
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EVG
Carnegie Mellon University
A "BENCHMARK used in the VPP. The ratio of the number of containing no CAST BALLOTS erroneous votes over the number of cast ballots containing one or more errors (either a vote for an unintended choice, or a missing vote)." VVSG.
Electronic Voting Glossary · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Perfect Ballot Index. In Election Security Glossary. Retrieved August 20, 2026, from https://electionsecurityglossary.com/glossary/perfect-ballot-index
Sources
1 cited · last checked Aug 9, 2026
01
Electronic Voting Glossary
Electronic Voting Glossary
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