# Election restrictions

**Country:** 🇹🇿 Tanzania (TZ)
**Date:** 2020-10-27
**Type:** Censorship
**Severity:** CRITICAL
**Status:** confirmed

## Summary

OONI detected censorship pattern in Tanzania. Election restrictions. Anomaly rate: 78.5%

## Metrics

- Confidence: 90%
- Measurements: 330
- Anomaly Rate: 81.6%

## Evidence

- **OONI** (measurement): Election restrictions
  - Observed: 2020-10-28
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=TZ&since=2020-10-28&until=2020-10-28)
- **OONI** (measurement): Web connectivity anomalies detected. 76 measurements with 81.6% anomaly rate.
  - Observed: 2020-10-28
  - Confidence: 95%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?since=2020-10-28&until=2020-10-28&probe_cc=TZ&test_name=web_connectivity&only=anomalies)
- **OONI** (measurement): Election restrictions
  - Observed: 2020-10-27
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=TZ&since=2020-10-27&until=2020-10-27)
- **OONI** (measurement): Web connectivity anomalies detected. 172 measurements with 78.5% anomaly rate.
  - Observed: 2020-10-27
  - Confidence: 95%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?since=2020-10-27&until=2020-10-27&probe_cc=TZ&test_name=web_connectivity&only=anomalies)
- **OONI** (measurement): Web connectivity anomalies detected. 82 measurements with 64.6% anomaly rate.
  - Observed: 2020-10-27
  - Confidence: 85%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?since=2020-10-27&until=2020-10-27&probe_cc=TZ&test_name=web_connectivity&only=anomalies)

## What we cannot say

- **Who caused it** — measurement data alone does not attribute the interference to any government, ISP, or other actor.
- **Intent** — anomalous or unreachable measurements indicate interference, not a stated motive or a deliberate-vs-incidental determination.
- **Which networks** — no specific ASN/ISP is identified for this incident.
- **The mechanism** — we cannot state whether this was DNS tampering, TLS/SNI reset, HTTP blockpage, throttling, or an infrastructure outage.
- **Sub-national scope** — measurement is aggregated at the country level; we cannot localize to a province, city, or network segment.
- **Independent corroboration** — this rests on a single source; treat it as a single-source signal, not a multi-source confirmation.

## Data Sources

ooni

## Citation

Voidly Research. (2026). Election restrictions [TZ-2020-0001]. Retrieved from https://voidly.ai/incident/TZ-2020-0001

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*Report generated by Voidly Research on 2026-06-21*
*Data licensed under CC BY 4.0*
*Incident ID: TZ-2020-0001*
*Permalink: https://voidly.ai/incident/TZ-2020-0001*