"In that connection, the Court reiterates that the object and purpose of the Convention requires its provisions to be interpreted and applied in such a way as to make their stipulations not just theoretical or illusory but practical and effective (see, for example, Artico v. Italy, judgment of 13 May 1980, Series A no. 37, pp. 15-16, § 33; United Communist Party of Turkey and Others, cited above, pp. 18-19, § 33; and Chassagnou and Others v. France [GC], nos. 25088/94, 28331/95 and 28443/95, § 100, ECHR 1999-III). 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 system, would 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 that the eligibility procedure contain sufficient safeguards to prevent arbitrary decisions. "