Governance

Tanzania

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Women in parliament19972024
16.421.626.932.137.419972024
Source: WB Gender
IndicatorValue
Electoral democracy index0.365 indexV-Dem [2025]
Liberal democracy index0.297 indexV-Dem [2025]
Government effectiveness-0.292 indexWorld Bank WGI [2024]
Rule of law-0.519 indexWorld Bank WGI [2024]
Control of corruption-0.294 indexWorld Bank WGI [2024]
Voice & accountability-0.645 indexWorld Bank WGI [2024]
Political stability-0.39 indexWorld Bank WGI [2024]
Regulatory quality-0.535 indexWorld Bank WGI [2024]
Cabinet fragmentation index1 indexWB DPI [2023]
Governing majority margin0.926 %WB DPI [2023]
Parties in executive cabinet350WB DPI [2023]
Women in parliament37.4 %WB Gender [2024]
Constitutional history supplementNo authoritative open source found
Legal systemEnglish common law; judicial review of legislative acts limited to matters of interpretationCIA World Factbook [2025] · 2026 archive
Suffrage (voting rights)18 years of age; universalCIA World Factbook [2025] · 2026 archive

several previous; latest adopted 25 April 1977

Source: CIA World Factbook (Historical Archive — final edition) · CC0 · Edition 2026-05

How to read these indices

V-Dem democracy indices range from 0 to 1 — higher values mean stronger democratic institutions. World Bank WGI governance estimates range from about −2.5 to +2.5, where higher is better. These are comparative indices across countries, not absolute scores.

Section metadata

Data year2025
EditionDatabook 2026
Coverage14/15
LicenseCC-BY
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Datasets on this page
  • V-Dem
    vdem
    Edition: 2025
  • World Bank WGI
    world_bank_wgi
    Edition: 2024
  • WB DPI
    dpi_political_institutions
    Edition: 2023
  • WB Gender
    world_bank_gender
    Edition: 2026
  • CIA World Factbook
    cia_factbook
    Edition: 2025
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About this data

Tanzania's governance on Databook compiles 14 indicators from 5 open datasets including V-Dem, World Bank WGI, WB DPI. Key figures include electoral democracy index (0.365 index), liberal democracy index (0.297 index). Data is referenced to 2025. Every value carries its source and publication year, published under open licenses.