Eligibility requirements are the constitutional, statutory, or regulatory conditions that determine who may stand as a candidate for elected office or cast a ballot. They are a foundational element of electoral law because they delimit the demos—the population entitled to participate—and the pool from which representatives may be drawn.
For candidates, common criteria include:
- Citizenship (often by birth for the highest offices)
- Minimum age (e.g., 35 for the U.S. presidency under Article II, Section 1; 25 for the U.S. House and 30 for the Senate)
- Residency in the relevant jurisdiction for a set period
- Mental capacity and absence of disqualifying criminal convictions
- Nomination thresholds, such as signatures or party endorsement
- Filing fees or deposits
For voters, typical criteria include citizenship, a minimum age (commonly 18, lowered in many democracies after the 1971 U.S. Twenty-Sixth Amendment and similar reforms elsewhere), registration, residency, and not being subject to disqualification (e.g., felony disenfranchisement in some U.S. states, or guardianship-based exclusions challenged in cases like Caamaño Valle v. Spain before the European Court of Human Rights in 2021).
International instruments shape the floor for these rules. Article 25 of the International Covenant on Civil and Political Rights (ICCPR) guarantees the right to vote and stand for election "without unreasonable restrictions," and the UN Human Rights Committee's General Comment No. 25 (1996) elaborates what counts as reasonable. Regional bodies—such as the Venice Commission through its Code of Good Practice in Electoral Matters (2002)—provide additional benchmarks.
Eligibility rules are politically consequential: tightening them (e.g., stricter residency or documentary citizenship proofs) tends to shrink the electorate or candidate field, while loosening them (e.g., automatic voter registration, reduced candidacy ages) expands participation. Disputes frequently end up before constitutional courts, election commissions, or human-rights bodies.
Example
In 2019, the U.K. Electoral Commission confirmed that Boris Johnson met the eligibility requirements to stand in the Uxbridge and South Ruislip constituency, including being a British, Irish, or qualifying Commonwealth citizen aged 18 or over.
Frequently asked questions
Yes. Standing for office almost always carries stricter conditions—higher minimum ages, longer residency, and sometimes citizenship by birth—than simply voting.
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