The right to free elections is guaranteed by Article 3 of the First Additional Protocol to the Convention for the Protection of Human Rights and Fundamental Freedoms.
Article 3 of Protocol No. 1 – Right to free elections
“The High Contracting Parties undertake to hold free elections at reasonable intervals by secret ballot, under conditions which will ensure the free expression of the opinion of the people in the choice of
Article 3 of Protocol No. 1 to the European Convention on Human Rights
the legislature.”