Deprivation of the right to vote:
Provision may be made for depriving individuals of their right to vote in referendums, but only subject to the following cumulative conditions:

i. it must be provided for by law;
ii. the proportionality principle must be observed;
iii. the deprivation must be based on mental incapacity or a criminal conviction for a serious offence;
iv. furthermore, the withdrawal of political rights or finding of mental incapacity may only be imposed by express decision of a court of law.