"The Court reiterates that Article 3 of Protocol No. 1, which provides for “free” elections “at reasonable intervals”, “by secret ballot” and “under conditions which will ensure the free expression of the opinion of the people”, involves the subjective rights to vote and to stand for election. Yet however important they may be, those rights are not absolute. Since Article 3 recognises them without setting them forth in express terms, let alone defining them, there is room for “implied limitations” (see Mathieu-Mohin and Clerfayt v. Belgium, 2 March 1987, § 52, Series A no. 113). Under their respective legal systems, the Contracting States enjoy a wide margin of appreciation in imposing conditions on the right to vote, which conditions are not, in principle, precluded by Article 3, but it is for the Court to determine in the last resort whether the requirements of Protocol No. 1 have been complied with. It has to satisfy itself that the conditions do not curtail the right to vote to such an extent as to impair its very essence and deprive it of effectiveness; that they are imposed in pursuit of a legitimate aim; and that the means employed are not disproportionate. "