Colegrove v. Green

Supreme Court of the United States
328 U.S. 549 (1946)
ELI5:

Sections

Rule of Law:

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The Legal Principle

This section distills the key legal rule established or applied by the court—the one-liner you'll want to remember for exams.

Facts:

  • Kenneth W. Colegrove and two other individuals were qualified voters residing in Illinois congressional districts.
  • Illinois had not reapportioned its congressional districts since 1901, despite significant population shifts recorded in multiple federal censuses over more than forty years.
  • Due to this failure to reapportion, there were gross disparities in the populations of Illinois's congressional districts.
  • For example, one congressional district had a population of 914,053, while another had a population of only 112,116.
  • Colegrove and the other plaintiffs resided in the most populous districts.
  • This population imbalance caused the plaintiffs' votes to have significantly less weight in electing a U.S. Representative compared to votes cast in less populous districts.

Procedural Posture:

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How It Got Here

Understand the case's journey through the courts—who sued whom, what happened at trial, and why it ended up on appeal.

Issue:

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Legal Question at Stake

This section breaks down the central legal question the court had to answer, written in plain language so you can quickly grasp what's being decided.

Opinions:

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Majority, Concurrences & Dissents

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Analysis:

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Why This Case Matters

Get the bigger picture—how this case fits into the legal landscape, its lasting impact, and the key takeaways for your class discussion.

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