In simple terms, the 15th Amendment says that no government in the United States can take away or limit a citizen’s right to vote because of their race, the color of their skin, or the fact that they or their ancestors were once enslaved. Ratified on February 3, 1870, it was the third of the Reconstruction Amendments passed after the Civil War, and it gave Congress the power to back that protection up with federal law.1National Archives. 15th Amendment to the U.S. Constitution: Voting Rights (1870)
The Two Sentences, in Plain Language
The whole amendment is two short sections. Section 1 is the rule:
“The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of race, color, or previous condition of servitude.”
Section 2 is the enforcement power:
“The Congress shall have power to enforce this article by appropriate legislation.”1National Archives. 15th Amendment to the U.S. Constitution: Voting Rights (1870)
Read together, they do two things. Section 1 tells every level of government what it cannot do: it cannot use race, color, or a history of enslavement as a reason to keep someone from voting or to make voting harder for them. Section 2 tells Congress it has the authority to pass laws that turn that promise into something enforceable, with federal oversight and criminal penalties.
What “Race, Color, or Previous Condition of Servitude” Covers
The amendment names three specific characteristics. “Race” covers broad categories of ancestry or ethnic background. “Color” refers to skin tone. “Previous condition of servitude” means a history of having been enslaved or held in forced labor. That third phrase was written so that even if someone could not be blocked based on race or appearance, the simple fact of past enslavement could never be used against them at the polls.
Courts have read this protection broadly. A law does not have to mention race on its face to violate the 15th Amendment. If its real purpose or its practical effect is to strip voting rights from people based on any of the three characteristics, it can be struck down. In a 1915 ruling, the Supreme Court held that a rule that technically avoided racial language but was designed to “recreat[e] and perpetuat[e] the very conditions which the Amendment was intended to destroy” still violated the Constitution.2Cornell Law School – Legal Information Institute. Guinn and Beal v. United States
That is how so-called grandfather clauses fell. Several states, starting in 1895, let anyone register without a literacy test if they or their ancestors had voted before the 14th and 15th Amendments were ratified. Because Black citizens had been enslaved and could not vote before those amendments, the clause let illiterate white citizens register while blocking Black ones. The Supreme Court unanimously struck those laws down.3Constitution Annotated | Congress.gov | Library of Congress. Grandfather Clauses
Who the Amendment Binds
The phrase “by the United States or by any State” reaches every level of public authority, from Congress down to a county election board. No public official, agency, or governing body may pass or enforce a law, policy, or procedure that violates the amendment’s voting protections.4Library of Congress. Civil War Amendments (Thirteenth, Fourteenth, and Fifteenth Amendments)
On its own, the amendment does not restrict private individuals or private groups. Constitutional protections generally limit government power, not private behavior. This is known as the “state action” doctrine.5Cornell Law Institute. U.S. Constitution Annotated – Amendment XV – Section II The line, however, is not as easy to hide behind as it may sound. When a state authorizes and regulates the way a political party runs its primary and puts the primary winners on the general-election ballot, the Supreme Court has held that the party is acting as an arm of the state, and racial exclusion by the party becomes racial exclusion by the government.6U.S. Reports (Library of Congress). Smith v. Allwright
What the Amendment Does Not Cover
The 15th Amendment protects against discrimination based on race, color, and prior enslavement. It says nothing about sex. When it was ratified in 1870, women of all races still could not vote in most of the country, and the amendment’s drafters chose not to extend the same protection to gender-based discrimination.7National Park Service. Why the Women’s Rights Movement Split Over the 15th Amendment
Women challenged their exclusion in court. In Minor v. Happersett (1875), the Supreme Court acknowledged that women were citizens under the 14th Amendment but ruled that citizenship alone did not guarantee the right to vote, and no amendment then in force required states to let women cast ballots.8LII / Legal Information Institute. Minor v. Happersett That gap was not closed until the 19th Amendment, ratified on August 18, 1920, which used language modeled on the 15th to bar denial of the vote “on account of sex.”9National Archives. 19th Amendment to the U.S. Constitution: Women’s Right to Vote
Poll taxes in federal elections, another tool long used to keep Black citizens from voting, were separately banned by the 24th Amendment in 1964.10Library of Congress. U.S. Constitution – Twenty-Fourth Amendment
How Congress Puts the Amendment Into Practice
Section 2 is what lets Congress translate the constitutional promise into working law. The most important law passed under that authority is the Voting Rights Act of 1965, which Congress described as “an act to enforce the fifteenth amendment to the Constitution.”11National Archives. Voting Rights Act (1965)
Section 2 of that Act is still the main tool for challenging discriminatory voting practices. It prohibits any voting rule or procedure that results in the denial of a citizen’s right to vote on account of race or color. A violation is shown when, looking at the full picture of local conditions, members of a racial minority have less opportunity than other voters to participate in the political process and elect representatives of their choice.12Office of the Law Revision Counsel. 52 USC 10301 – Denial or Abridgement of Right to Vote on Account of Race or Color
Federal law also attaches criminal penalties. Under 52 U.S.C. ยง 10307, it is illegal for any government official to refuse to let an eligible person vote or to fail to count their ballot. It is also illegal for anyone, official or private, to intimidate, threaten, or coerce a person for voting, trying to vote, or helping someone else vote. Certain violations can bring fines of up to $10,000, up to five years in prison, or both.13Office of the Law Revision Counsel. 52 USC 10307 – Prohibited Acts
Where the Amendment Stands Today
The core protection is still in force, but two Supreme Court decisions have changed how it is enforced.
In Shelby County v. Holder (2013), the Court struck down the formula that decided which states and counties had to get federal approval, called “preclearance,” before changing their voting rules. The Court found the formula unconstitutional because it relied on decades-old data.14Justia Law. Shelby County v. Holder No jurisdictions are currently subject to preclearance, so states that once needed federal sign-off can now change their voting laws without advance review.15Civil Rights Division – Justice.gov. Section 4 of the Voting Rights Act
In Brnovich v. Democratic National Committee (2021), the Court set out guideposts for evaluating claims under Section 2 of the Voting Rights Act. It said the size of the burden a rule places on voters matters, how far the rule departs from standard voting practices in 1982 is relevant, and small racial disparities in a rule’s impact do not by themselves make the rule illegal. The Court also held that a state’s interest in preventing fraud is a legitimate justification for voting rules.16Supreme Court of the United States. Brnovich v. Democratic National Committee Those guideposts made it harder for plaintiffs to win Section 2 challenges to state voting restrictions.
Even so, the constitutional rule itself has not changed. Federal courts can still strike down laws that intentionally discriminate based on race, and Section 2 of the Voting Rights Act, though harder to use after Brnovich, still provides a path to challenge voting rules that produce racially discriminatory results.12Office of the Law Revision Counsel. 52 USC 10301 – Denial or Abridgement of Right to Vote on Account of Race or Color In simple terms, the 15th Amendment still means what it said in 1870: your race, your color, and whether you or your ancestors were once enslaved cannot be used to keep you from voting.