Estoniav0

EIIElection Integrity Index

How well does the legal framework defend against vote-altering attacks?

Integrity53.8%29/53 · 29 datapoints · 7 dimensionsCompare across jurisdictions →

Dimensions

Citizen Verifiability75.0%
6/8 · 4 datapoints
Custody Hardware31.3%
3/8 · 4 datapoints
Post Election Audit44.4%
4/9 · 5 datapoints
Software Verifiability50.0%
5/9 · 5 datapoints
Transparency Observation75.0%
6/8 · 4 datapoints
Vendor Independence12.5%
1/4 · 4 datapoints
Voter Access71.4%
5/7 · 3 datapoints

Citizen Verifiability

75.0% · 6/8
DatapointScoreRationale & evidenceSource
4.1Public verification artifactDoes law mandate a downloadable public package containing certificates, device records, and result signatures?0.5/150.0%

§ 48³(7) requires publication of the voter application, the vote verification application and website integrity data before voting; § 48⁸(7) adds publication of the system source code. Estonia codifies a public verification toolset, though not a single signed downloadable package of certificates, device records and result signatures.

Prior to the start of electronic voting, the State Electoral Office publishes the voter application, the vote verification application and the data necessary for ensuring the authenticity and integrity of the website on the election website.
§ view source
2026-05-21
4.2End-to-end verifiability permittedDoes law permit (or require) per-voter cryptographic receipts that prove inclusion without revealing the vote?4/580.0%

§ 48¹⁰ codifies a voter's right to verify, via a separate verification application, that their electronic vote reached the system according to their intention — individual (cast-as-intended / recorded-as-cast) verifiability, mandated rather than merely permitted. It stops short of full end-to-end verifiability proving inclusion in the final tally, so it maps just below the top of the ordinal.

A voter has an opportunity to verify whether the application used for electronic voting has transferred the vote cast by the voter to the electronic voting system according to the voter’s intention.
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2026-05-21
4.3Voter-verifiable paper trailIs voter-verifiable paper record (VVPAT or hand-marked paper) legally required?1/1100.0%

Estonia's polling-place and advance voting use hand-marked paper ballots deposited in sealed ballot boxes and hand-counted by voting-district committees (§ 57) — the paper ballot is the voter-verifiable record. (Electronically cast votes are the separate i-voting channel.)

A voting district committee opens the ballot boxes after the close of voting.
§ view source
2026-05-21
4.4Citizen re-tally rightCan any citizen — not just parties — legally re-tally from published precinct data?0.5/150.0%

Ascertainment of results is public at both the voting-district committee (§ 57) and National Electoral Committee (§ 61) levels, and § 19⁴ gives everyone the right to observe. Estonia does not, however, codify a specific citizen right to re-tally from published raw precinct data.

The ascertaining of the voting results in the National Electoral Committee is public.
§ view source
2026-05-21

Custody Hardware

31.3% · 3/8
DatapointScoreRationale & evidenceSource
2.1Hardware tamper standardAre tamper-evident or tamper-responsive hardware standards mandated?2/540.0%

§ 36 of the Riigikogu Election Act requires voting-district committees to inspect and seal ballot boxes before voting opens and to seal the openings of advance-voting boxes after voting closes — tamper-evident sealing is mandated. No tamper-responsive auto-quarantine or codified seal-logging regime, so this maps to the 'seals required' level.

Voting district committees inspect and seal ballot boxes before the voting opens.
§ view source
2026-05-21
2.2Network isolation mandateIs internet/Wi-Fi/cellular connectivity legally prohibited on vote-casting equipment?0/10.0%

No section in the FTS-surfaced candidates satisfies this criterion. Best signal: FTS surfaced complaint-form sections — the word 'telecommunications' refers to a complainant's contact details. Estonia mandates no network isolation of vote-casting equipment; its nationwide internet-voting model is the architectural opposite of an air-gap.

§ view source
2026-05-21
2.3Custody documentationIs full chain-of-custody documentation required and publicly available?0.5/150.0%

§ 48⁸ requires that all operations processing electronic votes be logged, that the collector component be retained until votes are destroyed, and that the process audit verify the transfer of the electronic ballot box to the State Electoral Office — codified chain-of-custody documentation for the electronic channel, though the logs are not codified as publicly available.

All operations related to the processing of electronic votes are logged.
§ view source
2026-05-21
2.4Tamper criminal penaltyAre there explicit criminal penalties for unauthorized device access?0/10.0%

No matching sections in corpus (FTS returned 0 candidates) — concept not codified in this jurisdiction's election statute.

no FTS match
2026-05-21

Post Election Audit

44.4% · 4/9
DatapointScoreRationale & evidenceSource
3.1Mandatory auditIs a post-election audit legally required for every election?1/1100.0%

§ 48⁷ requires, before every electronic voting, a risk assessment, an audit of the applied security measures and technical penetration testing; § 48⁸ adds a mandatory process-and-data audit by an information-systems auditor. A post-election integrity audit is mandatory for the electronic channel at every election.

Before electronic voting begins, the following is carried out with regard to the electronic voting system:
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2026-05-21
3.2Audit methodWhat audit method is mandated?2/540.0%

Estonia mandates a security/process audit — penetration testing and a security-measures audit before voting (§ 48⁷) plus a process-and-data audit including a second counting of electronic votes (§ 48⁸). This is a process and integrity audit rather than a fixed-percentage hand recount or a margin-driven risk-limiting audit, so it maps to the lower-middle of the ordinal.

Before electronic voting begins, the following is carried out with regard to the electronic voting system:
§ view source
2026-05-21
3.3Audit triggers beyond mandatoryDoes law trigger additional audits on close margins or sworn challenges?0/10.0%

No matching sections in corpus (FTS returned 0 candidates) — concept not codified in this jurisdiction's election statute.

no FTS match
2026-05-21
3.4Public observation of auditAre parties, media, and citizens granted observer access to the audit?1/1100.0%

§ 59¹(7) makes the counting of electronically cast votes public, and § 19⁴/§ 23⁴ give everyone the right to observe the acts and procedures of electoral committees — covering the integrity verification conducted in the presence of an information-systems auditor.

Counting of votes cast by electronic means is public.
§ view source
2026-05-21
3.5Binding forceAre audit results legally binding on the final certified result?0/10.0%

No section in the FTS-surfaced candidates satisfies this criterion. Best signal: FTS surfaced party-finance and constitutional-procedure sections; none codifies whether the electronic-voting integrity audit is legally binding on the certified result. (§ 59¹(9), surfaced elsewhere, conditions signing of the e-voting result on integrity verification but stops short of a codified audit-binding rule.)

§ view source
2026-05-21

Software Verifiability

50.0% · 5/9
DatapointScoreRationale & evidenceSource
1.1Source code disclosureIs voting system source code legally accessible?4/580.0%

§ 48⁸(7) of the Riigikogu Election Act mandates that the State Electoral Office publish the source code for the electronic voting system and the verification application before every election — public disclosure, not vendor-only or NDA-gated. Only the voter-application source is withheld, so disclosure is near-comprehensive but not total.

The State Electoral Office organises the publication of the source code for the electronic voting system and the verification application before the elections. The source code for the voter application is not published.
§ view source
2026-05-21
1.2Reproducible builds requirementMust the binary that runs in production be reproducibly buildable from public source?0/10.0%

No matching sections in corpus (FTS returned 0 candidates) — concept not codified in this jurisdiction's election statute.

no FTS match
2026-05-21
1.3Pre-election binary commitmentIs the running binary cryptographically committed (hash published) before polls open?0.5/150.0%

§ 48⁸(7) requires publication of the e-voting system source code and verification application before the elections, and § 48³ publishes the running applications and website integrity data before voting opens — a strong pre-poll transparency commitment. The statute does not, however, require a published cryptographic hash of the production binary.

The State Electoral Office organises the publication of the source code for the electronic voting system and the verification application before the elections.
§ view source
2026-05-21
1.4Election definition publicationAre ballot contests, layouts, and tabulation rules signed and published before polls open?0/10.0%

No matching sections in corpus (FTS returned 0 candidates) — concept not codified in this jurisdiction's election statute.

no FTS match
2026-05-21
1.5Post-election integrity checkDoes law grant a right to verify the actual running binary matches the committed one?0/10.0%

No matching sections in corpus (FTS returned 0 candidates) — concept not codified in this jurisdiction's election statute.

no FTS match
2026-05-21

Transparency Observation

75.0% · 6/8
DatapointScoreRationale & evidenceSource
6.1Domestic observer rightsAre party and civil-society observers given full procedural access?1/1100.0%

§ 19⁴ of the Riigikogu Election Act (and parallel § 23⁴/§ 16¹/§ 20¹) grants everyone the right to observe the acts and procedures of electoral committees and elections managers, including the right to record the numbers of security seals — a broad domestic-observer regime open to party and civil-society observers alike.

Everyone has the right to observe the acts and procedures of the National Electoral Committee and elections managers.
§ view source
2026-05-21
6.2International observer accessAre OSCE/EU/IFES international observers admitted by default?1/1100.0%

Estonia's observation right under § 19⁴ extends to 'everyone' with no nationality restriction — OSCE/ODIHR and other international observers are admitted by default on the same footing as domestic observers (Estonia routinely hosts ODIHR i-voting observation missions).

Everyone has the right to observe the acts and procedures of the National Electoral Committee and elections managers.
§ view source
2026-05-21
6.3Precinct-level results publication speedAre precinct-level results legally required to be published within 24h of poll close?4/580.0%

§ 48⁸(2) mandates correct, timely and complete disclosure of voting results; voting-district committees count immediately after polls close and the State Electoral Office enters results into the election information system immediately (§ 59¹(8)) — codified timely publication, mapping to the within-48h level.

The publication of voting results must ensure the correct, timely and complete disclosure of the voting results received from the electronic voting system.
§ view source
2026-05-21
6.4Public election event logIs a public, signed, append-only election event log legally required?0/10.0%

No matching sections in corpus (FTS returned 0 candidates) — concept not codified in this jurisdiction's election statute.

no FTS match
2026-05-21

Vendor Independence

12.5% · 1/4
DatapointScoreRationale & evidenceSource
5.1Multi-vendor capabilityDoes law permit multiple certified vendors to operate in the same election?0/10.0%

No matching sections in corpus (FTS returned 0 candidates) — concept not codified in this jurisdiction's election statute.

no FTS match
2026-05-21
5.2Open protocol standardsAre vote-format / device-protocol standards open and publicly documented?0.5/150.0%

The standard form of electronic votes is established by published resolution of the National Electoral Committee (§ 59¹), and § 48⁸ requires publication of the system source code — Estonia's vote format and protocol are publicly documented, though not framed as a formal open standard.

An electronic vote which does not contain the registration number of the candidate or which does not comply with the standard form established by the National Electoral Committee is null and void.
§ view source
2026-05-21
5.3Contract duration capAre vendor contracts capped in duration, preventing perpetual lock-in?0/10.0%

No section in the FTS-surfaced candidates satisfies this criterion. Best signal: FTS surfaced party-finance and electoral-administration sections; Estonia operates its electronic voting system in-house through the State Electoral Office (§ 14) and codifies no vendor contract-duration cap.

§ view source
2026-05-21
5.4Source-code escrowIs source-code escrow with the state required as a condition of certification?0/10.0%

No matching sections in corpus (FTS returned 0 candidates) — concept not codified in this jurisdiction's election statute.

no FTS match
2026-05-21

Voter Access

71.4% · 5/7
DatapointScoreRationale & evidenceSource
7.1Ballot secrecy guaranteeIs voter–ballot unlinkability legally guaranteed and enforceable?1/1100.0%

Ballot secrecy is constitutionally guaranteed (§ 60, § 156: 'Voting shall be secret') and § 48⁶ extends it in detail to electronic voting — vote encryption, separation of personal data from the vote before counting, and a guarantee that a re-voting voter cannot prove which vote counted (coercion resistance).

Electronic voting must be organised in such a manner that the principle of secrecy of the vote is respected at every stage of the voting process, including after the electronic vote has been annulled.
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2026-05-21
7.2Accessibility mandateAre accessibility standards (vision, motor, language) legally required at every polling place?3/560.0%

Estonia codifies several accessibility measures — the i-voting voter application must support the visually impaired (§ 48³(6)), in-person voters with a physical disability may be assisted by another voter of their choice (§ 32(6),(9)), and home voting is available — but there is no comprehensive standalone polling-place accessibility-standards regime, so this maps to the 'some' level.

The voter application has support for the visually impaired.
§ view source
2026-05-21
7.3Polling-place density floorIs there a legal floor on polling places per N voters or per geographic area?1/1100.0%

§ 19 of the Riigikogu Election Act sets a geographic floor — at least one voting district, each with a polling place, must be formed in every rural municipality, city and Tallinn city district. This is a per-area floor rather than a per-N-voters ratio.

At least one voting district is formed within the territory of each rural municipality and city, and of each city district of Tallinn.
§ view source
2026-05-21

Other methodologies for Estonia