one person one vote rule
one-person, one-vote rule. Constitutional law. The principle that the Equal Protection Clause requires legislative voting districts to have about the same population. Reynolds v. Sims, 377 U.S. 533, 84 S.Ct. 1362 (1964). — Also termed one-man, one-vote rule. See APPORTIONMENT. [Cases: Constitutional Law 225.3(2). C.J.S. Constitutional Law § 818.]