# Wesberry v. Sanders **376 U.S. 1 (1964).** The Supreme Court held that congressional districts within a state must be drawn so that, as nearly as practicable, one person's vote is worth as much as another's, grounding the requirement in Article I, section 2's command that Representatives be chosen by the people of the several states. Decided weeks before [[Reynolds v. Sims]] applied a parallel rule to state legislatures, it is the congressional half of the [[One Person One Vote]] doctrine and the reason equal population is the single binding numerical constraint on a congressional map. It governs districts *within* a state; the division of seats *among* states is a separate process. See [[How the Census Apportions Congress]] and [[How a Redistricting Map Is Drawn and Challenged]].