"The Court further reiterates that the object and purpose of the Convention, which is an instrument for the protection of human rights, requires its provisions to be interpreted and applied in such a way as to make their stipulations not theoretical or illusory but practical and effective (see United Communist Party of Turkey and Others, cited above, pp. 18-19, § 33). The right to stand as a candidate in an election, which is guaranteed by Article 3 of Protocol No. 1 and is inherent in the concept of a truly democratic regime, would only be illusory if one could be arbitrarily deprived of it at any moment. Consequently, while it is true that States have a wide margin of appreciation when establishing eligibility conditions in the abstract, the principle that rights must be effective requires the finding that this or that candidate has failed to satisfy them to comply with a number of criteria framed to prevent arbitrary decisions (see Russian Conservative Party of Entrepreneurs and Others v. Russia, nos. 55066/00 and 55638/00, § 50, 11 January 2007; Podkolzina, cited above, § 35; and Melnychenko v. Ukraine, no. 17707/02, § 59, ECHR 2004-X). "