Paraguay:
18 years of age; universal and compulsory up to age 75

Peru:
18 years of age; universal

Philippines:
18 years of age; universal

Pitcairn Islands:
18 years of age; universal with three years
residency

Poland:
18 years of age; universal

Portugal:
18 years of age; universal

Puerto Rico:
18 years of age; universal; indigenous inhabitants are
US citizens but do not vote in US presidential elections

Qatar:
suffrage is limited to municipal elections

Reunion:
18 years of age; universal

Romania:
18 years of age; universal

Russia:
18 years of age; universal

Rwanda:
18 years of age; universal adult

Saint Helena:
NA years of age

Saint Kitts and Nevis:
18 years of age; universal

Saint Lucia:
18 years of age; universal

Saint Pierre and Miquelon:
18 years of age; universal

Saint Vincent and the Grenadines:
18 years of age; universal

Samoa:
21 years of age; universal

San Marino:
18 years of age; universal

Sao Tome and Principe:
18 years of age; universal

Saudi Arabia:
none

Senegal:
18 years of age; universal

Seychelles:
17 years of age; universal

Sierra Leone:
18 years of age; universal

Singapore:
21 years of age; universal and compulsory

Slovakia:
18 years of age; universal

Slovenia:
18 years of age; universal (16 years of age, if employed)

Solomon Islands:
21 years of age; universal

Somalia:
18 years of age; universal

South Africa:
18 years of age; universal

Spain:
18 years of age; universal

Sri Lanka:
18 years of age; universal

Sudan:
17 years of age; universal, but noncompulsory

Suriname:
18 years of age; universal

Swaziland:
18 years of age

Sweden:
18 years of age; universal

Switzerland:
18 years of age; universal

Syria:
18 years of age; universal

Tajikistan:
18 years of age; universal

Tanzania:
18 years of age; universal

Thailand:
18 years of age; universal and compulsory

Togo:
NA years of age; universal adult

Tokelau:
21 years of age; universal

Tonga:
21 years of age; universal

Trinidad and Tobago:
18 years of age; universal

Tunisia:
20 years of age; universal

Turkey:
18 years of age; universal

Turkmenistan:
18 years of age; universal

Turks and Caicos Islands:
18 years of age; universal

Tuvalu:
18 years of age; universal

Uganda:
18 years of age; univ