equal vote in statewide elections

Once the geographical unit for which a representative is to be chosen is designated, all who participate in the election are to have an equal vote—whatever their race, whatever their sex, whatever their occupation, whatever their income, and wherever their home may be in that geographical unit. This is required by the Equal Protection Clause of the Fourteenth Amendment.

Defined by the Supreme Court in - Gray v. Sanders, 372 U.S. 368 (1963).