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

Mali

According to Article 27, suffrage is granted to all citizens of Mali over the age of 18 to participate in universal, equal, and secret elections. The President of Mali is elected every 5 years by an absolute majority of votes. Additionally, under Article 61, the Deputies are elected every 5 years via universal suffrage. (Constitute Project, “Mali’s Constitution of 1992 ”).

Voting Rights and Suffrage · Country sources (all rights) · Years mentioned: 1992 · Last edited 2022-12-28 · Edit on GitHub