Puerto Rico
18 years of age; universal; island residents are US
citizens but do not vote in US presidential elections
Qatar
18 years of age; universal
Romania
18 years of age; universal
Russia
18 years of age; universal
Rwanda
18 years of age; universal
Saint Barthelemy
18 years of age, universal
Saint Helena, Ascension, and Tristan da Cunha
NA
Saint Kitts and Nevis
18 years of age; universal
Saint Lucia
18 years of age; universal
Saint Martin
18 years of age, universal