Reynolds v. Sims
The Supreme Court ruled that Alabama's legislative districts, which had not been redrawn in over 60 years despite huge population shifts, violated the Constitution because they gave wildly unequal weight to different voters' ballots.
The Court held that both chambers of every state legislature must be apportioned so that districts have roughly equal populations, rejecting Alabama's argument that its Senate could be organized like the U.S. Senate with one seat per county regardless of size.
“Legislators represent people, not trees or acres. Legislators are elected by voters, not farms or cities or economic interests.”
The majority's core rationale for why representation must track population rather than geography.
How it got here: A three-judge federal district court found Alabama's existing and two proposed legislative apportionment plans unconstitutional and ordered a temporary plan; state officials and voter groups appealed directly to the Supreme Court.
The Case in Depth
What happened
Alabama voters from Jefferson County sued state election officials, arguing that Alabama's legislature—last reapportioned in 1901 based on the 1900 census—no longer reflected where people actually lived. Population had grown unevenly for sixty years, so some rural counties with a few thousand residents had as many legislators as urban counties with hundreds of thousands of people, leaving city and suburban voters with far less political power per person.
The question before the Court
Does the Constitution require that seats in both houses of a state legislature be divided up according to population, so that each person's vote counts about the same no matter where they live?
Why it matters
Nearly every state legislature in the country had at least one chamber apportioned by counties or geography rather than population, meaning rural voters often had many times the voting power of city or suburban residents. This ruling forced sweeping redistricting nationwide, shifting political power toward urban and suburban areas and reshaping who controls state governments.
What changes now
The Supreme Court affirmed the district court's judgment and sent the case back for further proceedings consistent with its opinion. The lower court's temporary reapportionment plan remains in place while Alabama's legislature is expected to enact a permanent, constitutionally valid plan; the district court retains jurisdiction and warned it may act further if the legislature fails to do so. The decision also controlled companion cases from five other states decided the same day.
What this does not decide
The Court did not spell out precise mathematical tests for how much population deviation is permissible, leaving lower courts to work out detailed standards case by case. It also did not decide what remedial devices federal courts must use, nor did it require states to draw districts with mathematical exactness, since some deviation tied to political subdivisions may be constitutionally permissible.
Concurrences and dissents
Concurrence — Justice Clark
Justice Clark thought the Court went further than necessary by announcing a broad new 'equal population' principle. He believed it was enough to say that each of Alabama's apportionment plans was an irrational 'crazy quilt' that violated equal protection, without reaching the federal-analogy question. He also suggested that if one house met the population standard, the other house might permissibly depart from it somewhat to give voice to other factors.
Concurrence — Justice Stewart
Justice Stewart agreed the Alabama apportionment was unconstitutional because everyone conceded 60 years of legislative inaction had made it irrational, relying on reasoning from his dissent in the companion Colorado case. He also agreed it was proper for the district court to stick closely to apportionments Alabama's own representatives had approved and to give the state full opportunity to devise its own constitutional system.
Dissent — Justice Harlan
“It is difficult to imagine a more intolerable and inappropriate interference by the judiciary with the independent legislatures of the States.”Harlan's central objection to the Court injecting federal courts into state legislative apportionment.
Justice Harlan argued that the Fourteenth Amendment's Equal Protection Clause was never intended to control how states apportion their legislatures, pointing to Section 2 of the Amendment, which expressly addresses denial of the franchise and provides its own remedy. He marshaled extensive historical evidence from the amendment's drafting, ratification, and subsequent state practice to show states have always departed from strict population-based apportionment, and he warned the decision improperly thrusts federal courts into political questions with no manageable standards.
How the Court got there
The legal reasoning, step by step
- The Court held that the right to vote is an individual, personal right, and that debasing or diluting the weight of a person's vote violates the Equal Protection Clause just as much as outright denying someone the ballot.
- Because legislators represent people rather than land, the Court reasoned that a fair system of representative government requires that a majority of a state's population be able to elect a majority of its legislators in both chambers.
- The Court rejected the 'federal analogy'—the argument that a state Senate could copy the U.S. Senate's one-state-one-vote structure—because states, unlike the sovereign states that joined the Union, are not independent political units and their counties are simply administrative subdivisions created by the state.
- Applying this equal-population principle to Alabama's plans, the Court found that none of the three apportionment schemes before it—the existing 1901 scheme, the proposed 67-Senator Amendment, or the Crawford-Webb Act—came close enough to population equality in both houses to be constitutional, even though the House under one plan came closer than the rest.
- The Court set the standard that both houses of a bicameral state legislature must be apportioned on a population basis, with a state required to make an honest and good-faith effort to keep districts nearly equal, while leaving room for reasonable deviations tied to political-subdivision boundaries rather than pure geography or history.
Doctrinal impact
Cases affected by this decision
Reaffirms Baker v. Carr (369 U.S. 186)
The Court builds on Baker's holding that apportionment claims are justiciable, now supplying the substantive standard Baker left open.
Distinguishes Gray v. Sanders (372 U.S. 368)
The Court says Gray's 'one person, one vote' rule for statewide elections doesn't directly control legislative apportionment but supports the equality principle.