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

Kuwait

Under Article 87, citizens have a right to elect members of The National Assembly every 4 years or if the Emir calls for a special election after dissolving The National Assembly. (Constitute Project, “Kuwait’s Constitution of 1979, reinstated in 1992”).

Voting Rights and Suffrage · Country sources (all rights) · Years mentioned: 1979, 1992 · Last edited 2022-12-28 · Edit on GitHub