Chief Justice Earl Warren (majority): “Since the achieving of fair and effective representation for all citizens is concededly the basic aim of legislative apportionment, we conclude that the Equal Protection Clause guarantees the opportunity for equal participation by all voters in the election of state legislators. Diluting the weight of votes because of place of residence impairs basic constitutional rights under the Fourteenth Amendment just as much as invidious discriminations based upon factors such as race or economic status. Our constitutional system amply provides for the protection of minorities by means other than giving them majority control of state legislatures. And the democratic ideals of equality and majority rule, which have served this Nation so well in the past, are hardly of any less significance for the present and the future.”