V-Dem electoral democracy (polyarchy) index on a 0-1 scale (higher is more democratic). Source: Our World in Data — Governance (CPI, V-Dem). Retrieved 19 Jun 2026.
| Period | Electoral Democracy Index |
|---|---|
| 2025 | 0.365 |
| 2024 | 0.413 |
| 2023 | 0.409 |
| 2022 | 0.397 |
| 2021 | 0.366 |
| 2020 | 0.383 |
| 2019 | 0.383 |
| 2018 | 0.385 |
| 2017 | 0.401 |
| 2016 | 0.409 |
| 2015 | 0.453 |
| 2014 | 0.467 |
54 countries carry a recent electoral democracy score (V-Dem) figure. Each opens its own page with the history, the source and the API request.
165 of 207 indicators carry a figure for Tanzania, grouped by topic.