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

Trinidad and Tobago

Under Article 51, citizens 18 years or older and that have proper residence may vote and run for office. Eligible voters elect the members of the legislature and the President. (Constitute Project, “Trinidad and Tobago’s Constitution of 1976 with Amendments through 2007”).

Voting Rights and Suffrage · Country sources (all rights) · Years mentioned: 1976, 2007 · Last edited 2022-12-28 · Edit on GitHub