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

Pakistan

Article 51 states that an individual in Pakistan may vote if they are a citizen, are over the age of 18, are registered to vote, and have a sound mind. Members of the National Assembly are elected via direct and free suffrage. (Constitute Project, “ Pakistan’s Constitution of 1973, reinstated in 2002 with Amendments through 2018”).

Voting Rights and Suffrage · Country sources (all rights) · Years mentioned: 1973, 2002, 2018 · Last edited 2022-12-28 · Edit on GitHub