Voters — Election Security Glossary
28 election security terms in the Voters category, with definitions sourced from NIST, CISA, EAC, and 30+ authoritative documents.
Browse all 28 terms in Voters
Voter
1. A person who is eligible to vote, regardless of whether or not she actually votes.
Assistive Technology
An item used to increase, maintain, or improve the functional capabilities of persons with disabilities.
Electorate
All the people in a political jurisdiction who are entitled to vote in an election.
Overseas Voter
A voter who is entitled to the benefit of UOCAVA.
Personal Assistive Device
A "device that is carried or worn by an individual with some physical impairment whose primary purpose is to help compensate for that impairment." GLOSSARY.
Ballot Fatigue
The tendency of a voter to fail to cast a vote in races far from the beginning of the BALLOT.
Challenge
Questioning the eligibility of a voter to cast a ballot, or to accept a ballot for counting.
Challenged Voter
A voter whose eligibility to vote has been questioned by a CHALLENGER.
Challenger
An individual or official who questions the eligibility of a voter to cast a ballot, or to accept a ballot for counting.
Disabled
An individual with a disability is defined by the ADA as a person who has a physical or mental impairment that substantially limits one or more major life activities, a person who…
Elector
A person who is both qualified and registered to vote at an election.
Eligible Voter
In B. C., an individual who meets the qualifications for voting; in some jurisdictions, an individual who is registered to vote, or registered for Internet voting.
By ESG Editorial Team · Drawing on NIST, EAC, CISA, and 29 authoritative sources on election security
An election has legitimate authority only when it includes all eligible voters and excludes ineligible ones. That threshold (who votes and who does not) is one of the most heavily regulated aspects of election administration, embedded in federal and state law, and defended through documentation, verification, and procedural safeguards. Voter eligibility and the protection of voting rights sit in constant tension with each other, and the terminology of voter administration reflects that dynamic.
The legal foundation is straightforward in principle: to vote, a person must be a U.S. citizen, of voting age, a state resident, and not legally disqualified. But eligibility is not self-evident at the polling place, and the practical challenge of election administration is verifying that a person who appears genuinely meets those requirements without creating barriers that disenfranchise eligible voters.
Three policy questions have reshaped voter administration in recent decades. First, voter identification: must a voter present government-issued photo identification, or can other documents suffice, or no documentation at all? The approach adopted by each state is a political and practical choice, balancing the need to verify identity against barriers that requirements can create for eligible voters without appropriate documentation. Second, provisional ballots. If a voter's eligibility is uncertain, can they cast a ballot provisionally and have it counted later if eligibility is confirmed? Third, voter roll maintenance. How aggressively should election officials purge outdated or inaccurate registration data? Each of these questions has no universal answer. They are policy choices embedded in law and administered through procedures that must be transparent and verifiable.
Beyond eligibility, voter protection extends to ballot secrecy (ensuring that how a person votes is not revealed to others) and accessibility, ensuring that voters with disabilities have equal ability to vote privately and independently. These protections are federal law under the Americans with Disabilities Act and HAVA Title III.
Key Concepts
Voter Registration
The official enrollment of an eligible person in a jurisdiction's voter roll, creating the legal record of who may vote and the baseline for list maintenance and verification.
Voter Identification
The legal requirement that voters present identification at the polling place, varying by state from strict photo ID to non-photo alternatives to no ID requirement.
Provisional Ballot
A ballot cast by a voter whose eligibility is unresolved at the time of voting, held separately and counted only if the voter's eligibility is later confirmed.
Ballot Secrecy
The legal and procedural protection ensuring that how a voter voted remains confidential, protecting voters from coercion, intimidation, and retaliation.
Voter Intimidation
The federal crime of threatening, coercing, or intimidating anyone for voting or attempting to vote, enforced to protect the integrity of voter participation.
Accessibility
Legal obligations under the ADA and HAVA Title III to ensure voters with disabilities can vote privately and independently, requiring accessible equipment and polling places.
Uocava
Federal law protections enabling military and overseas voters to register, request, receive, and return ballots remotely with extended deadlines for distance and deployment.
Eligible Voter
The legal status of meeting all requirements to vote. Citizenship, age, residency, and absence of disqualifying factors, verified through registration data and documentation at the polls.
Spoiled Ballot
A ballot a voter has marked incorrectly, returned to poll workers before being cast, and replaced with a fresh ballot so the voter can record their intent correctly.
How These Terms Relate
These concepts establish the universe of eligible voters, verify their eligibility, and protect their rights to participate with choices kept confidential. Voter registration creates the official record defining who may vote, but that record requires continuous maintenance to reflect changes in eligibility and address. Voter ID requirements and provisional ballot procedures serve overlapping but distinct functions: ID requirements authenticate identity at the moment of voting, while provisional ballots defer eligibility verification to after election day, creating different security and participation trade-offs. Ballot secrecy and voter accessibility protections are equally fundamental: voters must be free from coercion for their choices, and eligible voters with disabilities must have genuine ability to participate. Voter intimidation laws and UOCAVA protections extend voter rights beyond the polling place, protecting voters who face interference or who must vote from a distance. Together, these concepts reflect the core principle that election security and voter protection are not competing values. They are complementary requirements of a legitimate election.
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