Local government districts have to be roughly equal in population. Decided April 1, 1968 (argued November 14, 1967). Opinion of the Court: Byron White → go there Dissenting: Harlan, Fortas, Stewart. Applied: the Fourteenth Amendment → go there Topic: Voting and redistricting. Avery v. Midland County, 390 U.S. 474 (1968), is a United States Supreme Court case that ruled that local government districts had to be roughly equal in population. Wiki link