What is the oldest written source in this country that mentions this right?

São Tomé and Príncipe

Article 58 of the Constitution grants all citizens over the age of18 the right to vote as long as they are competent. Article 78 states that the President of the Republic is elected by universal, free, direct, and secret suffrage. (Constitute Project, “São Tomé and Príncipes’s Constitution of 1975 with Amendments through 2003”).

Voting Rights and Suffrage · Country sources (all rights) · Years mentioned: 1975, 2003 · Last edited 2022-12-28 · Edit on GitHub