ŽDANOKA v. LATVIA JUDGMENT 33 107. In Podkolzina, the Court found a violation of Article 3 of Protocol No. 1 with regard to restrictions on an individual’s eligibility to stand as a candidate for election. In that case, the applicant was removed from the list of parliamentary candidates on account of her allegedly insufficient knowledge of the official language of the State. The Court acknowledged that a decision determining a parliament’s working language was in principle one which the State alone had the power to take, this being a factor shaped by the historical and political considerations specific to the country concerned. A violation of Article 3 of Protocol No. 1 was found, however, because the procedure applied to the applicant to determine her proficiency in the official language was incompatible with the requirements of procedural fairness and legal certainty, with the result that the negative conclusion reached by the domestic authorities in this connection could be deemed deficient (§§ 33-38). 108. In Melnychenko v. Ukraine (no. 17707/02, §§ 53-67, ECHR 2004-X), the Court also recognised that legislation establishing domestic residence requirements for a parliamentary candidate was, as such, compatible with Article 3 of Protocol No. 1. At the same time, the decision of the Ukrainian authorities to deny the applicant registration as a parliamentary candidate was found to be in breach of the above provision, given that the domestic law governing proof of a candidate’s residence lacked the necessary certainty and precision to guarantee the applicant adequate safeguards against arbitrary treatment. The Court underlined in that case that, while the Contracting 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 itself contains sufficient safeguards to prevent arbitrary decisions (§ 59). 109. In certain older cases, the former Commission was required on several occasions to consider whether the decision to withdraw an individual’s so-called “active” or “passive” election rights on account of his or her previous activities constituted a violation of Article 3 of Protocol No. 1. In all those cases, the Commission found that it did not. Thus, in the cases of X v. the Netherlands (no. 6573/74, Commission decision of 19 December 1974, DR 1, p. 87) and X v. Belgium (no. 8701/79, Commission decision of 3 December 1979, DR 18, p. 250), it declared inadmissible applications from two persons who had been convicted following the Second World War of collaboration with the enemy or “uncitizen-like conduct” and, on that account, were permanently deprived of the right to vote. In particular, the Commission considered that “the purpose of legislation depriving persons convicted of treason of certain political rights and, more specifically, the right to vote [was] to ensure that persons who [had] seriously abused, in wartime, their right to participate in the public life of their country are prevented in future from abusing their