Democracy is based on a fundamental principle of political equality. In a democracy, each adult citizen must have one vote and each vote must have one value. But there are many instances of denial of equal right to vote: (i) In Saudi Arabia women do not have the right to vote. (ii) Estonia has made its citizenship rules in such a way that people belonging to Russian minority find it difficult to get the right to vote. (iii) In Fiji, the electoral system is such that the vote of an indigenous Fiji has more value than that of an Indian-Fijian.