How many years of comparable data are there for Sao Tome and Principe and Senegal?

122 years are reported by both, from 1904 to 2025.

Where does this data come from?

V-Dem (2026) – processed by Our World in Data, published as Government Effectiveness Index vs. Electoral Democracy Index. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Sao Tome and Principe vs Senegal: Government Effectiveness Index vs. Electoral Democracy Index

Sao Tome and Principe

0.632

in 2025

Senegal

0.633

in 2025

Sao Tome and Principe rank

66th

Senegal rank

64th

Government Effectiveness Index vs. Electoral Democracy Index over time

Sao Tome and Principe
Senegal

How they compare

Senegal currently reports 0.633 against 0.632 in Sao Tome and Principe, a difference of 0.001.

The two have swapped places 6 times across 122 shared years of data; in 1904 it was Senegal ahead.

Sao Tome and Principe ranks 66th and Senegal ranks 64th of 175 countries.

Senegal has averaged higher in every one of the 13 decades both report.

Head to head by decade

Decade	Sao Tome and Principe	Senegal	Difference	Ahead
1900s	0.025	0.053	0.028	Senegal
1910s	0.0358	0.053	0.0172	Senegal
1920s	0.0333	0.0513	0.018	Senegal
1930s	0.026	0.0518	0.0258	Senegal
1940s	0.028	0.1294	0.1014	Senegal
1950s	0.0278	0.242	0.2142	Senegal
1960s	0.028	0.3513	0.3233	Senegal
1970s	0.0966	0.3762	0.2796	Senegal
1980s	0.1673	0.4776	0.3103	Senegal
1990s	0.5801	0.5988	0.0187	Senegal
2000s	0.6409	0.672	0.0311	Senegal
2010s	0.6565	0.705	0.0485	Senegal
2020s	0.6458	0.6652	0.0193	Senegal

Averages of every year both report within each decade.

Frequently asked questions

Which has higher government effectiveness index vs. electoral democracy index, Sao Tome and Principe or Senegal?: Senegal, at 0.633 against 0.632 in Sao Tome and Principe as of 2025.
What is the difference in government effectiveness index vs. electoral democracy index between Sao Tome and Principe and Senegal?: 0.001, with Senegal ahead.
How many years of comparable data are there for Sao Tome and Principe and Senegal?: 122 years are reported by both, from 1904 to 2025.
How do Sao Tome and Principe and Senegal rank globally for government effectiveness index vs. electoral democracy index?: Sao Tome and Principe ranks 66th and Senegal ranks 64th of 175 countries.
Where does this data come from?: V-Dem (2026) – processed by Our World in Data, published as Government Effectiveness Index vs. Electoral Democracy Index. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Sao Tome and Principe vs Senegal: Government Effectiveness Index vs. Electoral Democracy Index. Statizoid, drawing on V-Dem (2026) – processed by Our World in Data. Retrieved 01 September 2026, from https://social-development.statizoid.com/compare/government-effectiveness-vs-electoral-democracy-index/sao-tome-and-principe/senegal/

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<a href="https://social-development.statizoid.com/compare/government-effectiveness-vs-electoral-democracy-index/sao-tome-and-principe/senegal/">Sao Tome and Principe vs Senegal: Government Effectiveness Index vs. Electoral Democracy Index</a> — Statizoid

About this data

Indicator: Government Effectiveness Index vs. Electoral Democracy Index
Source: V-Dem (2026) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 175 places, 29,523 data points, 1789–2025
Last refreshed: 28 August 2026

Central estimate of the extent to which political leaders are elected under comprehensive suffrage in free and fair elections, and freedoms of association and expression are guaranteed.