Poland
18 years of age; universal
Portugal
18 years of age; universal
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
NA
Saint Kitts and Nevis
18 years of age; universal