Not everywhere. In the US alone there are 11 states where you can lose that right permanently.
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Found something interesting:
Thomas Hammarberg, Commissioner for Human Rights at the Council of Europe (with 47 member states), has argued strongly that prisoners should have the right to vote. “Prisoners, though deprived of physical liberty, have human rights,” he has argued. “Measures should be taken to ensure that imprisonment does not undermine rights which are unconnected to the intention of the punishment. Indeed, authorities should ensure, for instance, that a prisoner can receive health care and have contact with his or her family. The right to study, to be informed and to vote belongs to this same category of rights which should be protected.”










