The Long History of Gerrymandering

Political gerrymandering, or shaping political boundaries to benefit a particular party, has been considered constitutional since the nation’s 18th-century founding, but racial gerrymandering is a practice with roots in the post-Civil War era.

Expanding beyond the practice of redrawing district lines after each decennial census, late 19th-century Democratic state legislatures built on the earlier cartographic practice to create a litany of so-called Black districts across the postbellum South.

The nation’s first wave of racial gerrymandering emerged as a response to the political gains Southern Black voters made during the administration of President Ulysses S. Grant in the 1870s. Georgia, Alabama, Florida, Mississippi, North Carolina and Louisiana all elected Black congressmen during that decade. During the 42nd Congress, which met from 1871 to 1873, South Carolina sent Black men to the House from three of its four districts.

The first Black senator and representatives were elected in the 1870s, as shown in this historic print. Library of Congress

Initially, the white Democrats who ruled the South responded to the rise of Black political power by crafting racist narratives that insinuated that the emergence of Black voters and Black officeholders was a corruption of the proper political order. These attacks often provided a larger cultural pretext for the campaigns of extralegal political violence that terrorized Black voters in the South, assassinated political leaders, and marred the integrity of several of the region’s major elections.

Election changes

Following these pogroms during the 1870s, southern legislatures began seeking legal remedies to make permanent the counterrevolution of “Redemption,” which sought to undo Reconstruction’s advancement of political equality. A generation before the Jim Crow legal order of segregation and discrimination was established, southern political leaders began to disfranchise Black voters through racial gerrymandering.

These newly created Black districts gained notoriety for their cartographic absurdity. In Mississippi, a shoestring-shaped district was created to snake and swerve alongside the state’s famous river. North Carolina created the “Black Second” to concentrate its African American voters to a single district. Alabama’s “Black Fourth” did similar work, leaving African American voters only one possible district in which they could affect the outcome in the state’s central Black Belt.

South Carolina’s “Black Seventh” was perhaps the most notorious of these acts of Reconstruction-era gerrymandering. The district “sliced through county lines and ducked around Charleston back alleys” – anticipating the current trend of sophisticated, computer-targeted political redistricting.

Possessing 30,000 more voters than the next largest congressional district in the state, South Carolina’s Seventh District radically transformed the state’s political landscape by making it impossible for its Black-majority to exercise any influence on national politics, except for the single racially gerrymandered district.

South Carolina’s House map was gerrymandered in 1882 to minimize Black representation, heavily concentrating Black voters in the 7th District. Library of Congress, Geography and Map Division

Although federal courts during the late 19th century remained painfully silent on the constitutionality of these antidemocratic measures, contemporary observers saw these redistricting efforts as more than a simple act of seeking partisan advantage.

“It was the high-water mark of political ingenuity coupled with rascality, and the merits of its appellation,” observed one Black congressman who represented South Carolina’s 7th District.

Racial Gerrymandering in Recent Times

The political gains of the Civil Rights Movement of the 1950s and 1960s, sometimes called the “Second Reconstruction,” were made tangible by the 1965 Voting Rights Act. The law revived the postbellum 15th Amendment, which prevented states from creating voting restrictions based on race. That amendment had been made a dead letter by Jim Crow state legislatures and an acquiescent Supreme Court.

In contrast to the post-Civil War struggle, the Second Reconstruction had the firm support of the federal courts. The Supreme Court affirmed the principal of “one person, one vote” in its 1962 Baker v. Carr and 1964 Reynolds v. Sims decisions – upending the Solid South’s landscape of political districts that had long been marked by sparsely populated Democratic districts controlled by rural elites.

The Voting Rights Act gave the federal government oversight over any changes in voting policy that might affect historically marginalized groups. Since passage of the 1965 law and its subsequent revisions, racial gerrymandering has largely served the purpose of creating districts that preserve and amplify the political representation of historically marginalized groups.

This generational work may soon be undone by the current Supreme Court. The court, which heard oral arguments in the Louisiana case in October 2025, will release its decision by the end of June 2026.

This article is republished from The Conversation, a nonprofit, independent news organization bringing you facts and trustworthy analysis to help you make sense of our complex world. It was written by: Robert D. Bland, University of Tennessee

Read more:

Supreme Court redistricting ruling could upend decades of voting rights law – and tilt the balance of power in Washington

Voting rights at risk after Supreme Court makes it harder to challenge racial gerrymandering

What everyone should know about Reconstruction 150 years after the 15th Amendment’s ratification

Robert D. Bland does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment