On August 6, 1965, President Lyndon B. Johnson signed the Voting Rights Act into law, an enactment officially titled “An Act to enforce the fifteenth amendment to the Constitution, and for other purposes.” According to the historical record, the legislation aimed to dismantle systematic barriers preventing Black Americans from casting ballots, following decades of state-level restrictions, poll taxes, literacy tests, and violent suppression.
Historical Roots and Post-Civil War Protections
Following the Civil War, lawmakers ratified three constitutional amendments to establish racial equality. The Thirteenth Amendment of 1865 outlawed enslavement except as criminal punishment, while the Fourteenth Amendment of 1868 guaranteed citizenship and equal protection to anyone born or naturalized in the United States—except certain Indigenous Americans. In 1870, the Fifteenth Amendment explicitly protected the right of Black men to vote. To enforce these rules, Congress established the Department of Justice that same year and targeted the Ku Klux Klan, which had used violence and intimidation to suppress Black voters and their white allies, according to historical accounts.
As federal enforcement threatened violators with jail time, white southern opponents shifted their rationale. By 1871, critics argued that newly freed Black men were poor and uneducated, and claimed that voting for public infrastructure like roads and schools amounted to socialism. This rhetoric influenced northern white voters to look away as southern states implemented grandfather clauses, literacy tests administered by white registrars, and poll taxes. Districts were also carved up unevenly to favor the Democrats, securing a solidly Democratic South until 1964.
Did You Know? The full title of the historic legislation signed by President Lyndon B. Johnson on August 6, 1965, is “An Act to enforce the fifteenth amendment to the Constitution, and for other purposes.”
The Civil Rights Movement and the Push for Federal Reform
National momentum for voting rights surged after World War II, as Americans who fought fascism overseas recognized the hypocrisy of defending democracy abroad while denying basic rights at home. Spurred by lawyers Thurgood Marshall and Constance Baker Motley, the federal judiciary relied on the Fourteenth Amendment’s due process and equal protection clauses. In the 1954 Brown v. Board of Education decision, the Supreme Court under Chief Justice Earl Warren declared segregated schools unconstitutional.
Despite civil rights acts passed under President Dwight Eisenhower in 1957 and 1960, voter registration rates remained critically low. In Mississippi, where only 6.7% of Black residents were registered, the Student Nonviolent Coordinating Committee (SNCC) and the Council of Federated Organizations (COFO) launched the 1964 Freedom Summer under Bob Moses. On June 21 of that year, Ku Klux Klan members—including at least one law enforcement officer—murdered organizers James Chaney, Andrew Goodman, and Michael Schwerner near Philadelphia, Mississippi. When voting barriers persisted, marchers attempted to walk from Selma to Montgomery on March 7, 1965. Law enforcement officers on horseback met them on the Edmund Pettus Bridge with clubs, beating demonstrators and fracturing the skull of John Lewis, who later served 17 terms in Congress. President Johnson subsequently urged Congress to act, leading directly to the passage of the Voting Rights Act.
Recent Judicial Rulings and Turnout Disparities
The legal framework established in 1965 faced significant changes in the 2013 Shelby County v. Holder decision, when the Supreme Court under Chief Justice John Roberts struck down the requirement that jurisdictions with histories of discrimination obtain Department of Justice preclearance before altering voting laws. According to a 2024 study by the Brennan Center analyzing nearly a billion vote records over 14 years, the racial voting gap is growing almost twice as fast in locations previously covered by preclearance. Additional research highlighted by the Brennan Center showed that Alabama’s white-to-black voter turnout gap in the 2024 election reached its highest point since at least 2008, with more than 200,000 additional ballots likely cast if nonwhite voters turned out at equal rates.
Subsequent judicial actions have continued to affect voting access. On July 1, 2021, the Supreme Court upheld voting restrictions in Brnovich v. Democratic National Committee. More recently, on April 29, the Supreme Court issued a 6–3 decision in Louisiana v. Callais, ruling that Louisiana’s creation of a majority-Black congressional district constituted an unconstitutional racial gerrymander under the Fifteenth Amendment.
Frequently Asked Questions
When was the Voting Rights Act signed into law?
The Voting Rights Act was signed into law on August 6, 1965, by President Lyndon B. Johnson.
What key judicial decision struck down the preclearance requirement?
In the 2013 Shelby County v. Holder decision, the Supreme Court struck down the provision requiring jurisdictions with a history of discrimination to get approval from the Department of Justice before changing voting laws.
What did the Supreme Court decide in Louisiana v. Callais?
By a 6–3 vote, the Supreme Court declared Louisiana’s creation of a majority-Black district unconstitutional under the Fifteenth Amendment, ruling it an unconstitutional racial gerrymander.
How might ongoing legal challenges and shifting voter turnout gaps influence future elections across the United States?