"Accordingly, the exclusion from the right to vote of any groups or categories of the general population must be reconcilable with the underlying purposes of Article 3 of Protocol No. 1 (see Ždanoka, cited above, § 105). The Court has held, inter alia, that domestic legislation making the right to vote subject to a minimum age or to residence conditions is, in principle, compatible with Article 3 of Protocol No. 1 (see Hirst, § 62, and Hilbe, both cited above). It has acknowledged that any general, automatic and indiscriminate departure from the principle of universal suffrage risks undermining the democratic validity of the legislature thus elected and the laws it promulgates (see Hirst, cited above). "