“One person, one vote”—four words that sound like common sense today. But when the Supreme Court first put them to paper, on March 18, 1963, in a decision on an election law case out of Georgia, they triggered a political earthquake. In a series of rulings over the next two years, the Court’s expansion of this principle forced lawmakers across the country to redraw legislative district lines, redistributing political power to reflect where people actually lived. It thrust the nation into what two political scientists called “the greatest peace-time change in representation in the history of
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