The Fifteenth Amendment, ratified on February 3, 1870, bars the federal government and every state from denying or restricting a citizen’s right to vote based on race, color, or previous condition of servitude.1Congress.gov. Constitution of the United States – Fifteenth Amendment It was the last of three Reconstruction amendments passed after the Civil War, following the Thirteenth (which abolished slavery) and the Fourteenth (which established citizenship and equal protection). Congress approved it in February 1869, and three-fourths of state legislatures ratified it within a year.2National Archives. 15th Amendment to the U.S. Constitution: Voting Rights (1870) Understanding what the amendment does — and, just as importantly, what it does not do — explains nearly a century of legal fights over who gets to cast a ballot in America.
The Three Grounds It Prohibits
Section 1 names three characteristics that no government can use as a reason to deny someone the vote: race, color, and previous condition of servitude.1Congress.gov. Constitution of the United States – Fifteenth Amendment Each term closes a slightly different door.
“Race” covers a person’s ethnic or ancestral background. “Color” addresses skin pigmentation, which was sometimes treated as a separate basis for discrimination even among people of the same broader racial group. “Previous condition of servitude” targets the legal status of people who had been held in slavery, blocking laws that would single out formerly enslaved people because of their past bondage.
The three terms were chosen deliberately. Without the “color” language, a state could have claimed it was drawing lines based on appearance rather than race. Without the “servitude” language, a state could have disenfranchised anyone who had been held as property regardless of racial classification. Together, they form a narrow but tight prohibition against the most common justifications Southern states were already using to keep Black men from voting.
Who Has to Follow It
The text binds two entities: “the United States” and “any State.”3Legal Information Institute. U.S. Constitution – Amendment XV The prohibition runs from the federal government down through every state legislature, governor’s office, county board, and municipal clerk. Under the Supremacy Clause, it overrides any conflicting state constitution, statute, or local ordinance.4Congress.gov. ArtVI.C2.1 Overview of Supremacy Clause A state cannot carve out an exception based on tradition, regional preference, or local custom.
Because state election rules now had to answer to a federal constitutional standard, election law became a federal concern rather than a purely local one. Federal courts gained the power to strike down any state voting rule that used race, color, or former servitude as a disqualifying factor.
A Prohibition, Not a Guarantee
The Fifteenth Amendment is what constitutional lawyers call a “negative right.” It does not affirmatively give anyone the right to vote. It tells the government what it cannot do: it cannot use race, color, or former enslavement as a reason to say no. States remain free to impose other voting qualifications, like age or residency requirements, so long as those qualifications don’t cross the three prohibited lines.5Constitution Annotated. Amdt14.S1.8.6.2 Voter Qualifications
That framework explains why so many people could still be blocked from voting after 1870. If a state denied someone the ballot for a reason not listed in the amendment’s text, the Fifteenth Amendment offered no protection on its own.
Felony Disenfranchisement Sits Outside
One consequence of this negative-rights structure is that states can strip voting rights from people convicted of felonies. The legal basis is not the Fifteenth Amendment but Section 2 of the Fourteenth, which explicitly contemplates denying the vote to citizens “except for participation in rebellion, or other crime.”6Legal Information Institute. U.S. Constitution – Amendment XIV In Richardson v. Ramirez (1974), the Supreme Court held that this language amounts to express constitutional permission for felony disenfranchisement, meaning states don’t have to show a compelling reason for the policy.7Justia U.S. Supreme Court Center. Richardson v. Ramirez, 418 U.S. 24 (1974) Restoration rules vary widely. Some states restore rights automatically upon completion of a sentence; others require payment of all outstanding fines and fees first.
The Loopholes States Used for Nearly a Century
The amendment’s narrow focus on three prohibited grounds left room for creative workarounds, and Southern states exploited every inch of it. For decades after ratification, formally race-neutral rules were designed and administered to keep Black citizens away from the polls.
Literacy Tests
States required voters to pass reading or comprehension tests administered by white officials who had complete discretion over whether someone “passed.” Black applicants routinely got harder questions or were failed on technicalities while white applicants were waved through. The Supreme Court initially tolerated these tests in Williams v. Mississippi (1898), ruling they were permissible if applied equally. In practice, they never were.
Poll Taxes
Many Southern states charged a fee to vote on Election Day. Because formerly enslaved people and their descendants were disproportionately poor, poll taxes effectively shut them out. The Court upheld poll taxes for decades. It took the Twenty-Fourth Amendment, ratified in 1964, to ban them in federal elections. Two years later, in Harper v. Virginia Board of Elections, the Court struck down poll taxes in state elections as well, holding that conditioning the vote on payment of a fee violates the Equal Protection Clause.8Justia U.S. Supreme Court Center. Harper v. Virginia Board of Elections, 383 U.S. 663 (1966)
Grandfather Clauses
Some states exempted anyone from literacy tests or other requirements if their ancestors had been eligible to vote before 1866 or 1867, dates chosen because they preceded the Fifteenth Amendment’s ratification. White voters whose grandfathers could vote before Reconstruction skipped the test. Black voters whose ancestors had been enslaved could not. The Court struck down Oklahoma’s grandfather clause in Guinn v. United States (1915), ruling that tying voting eligibility to a date chosen specifically because it preceded the Fifteenth Amendment was a transparent violation of the amendment’s purpose.9Justia U.S. Supreme Court Center. Guinn and Beal v. United States, 238 U.S. 347 (1915)
White Primaries
In the one-party South, winning the Democratic primary was tantamount to winning the general election. Several states allowed the Democratic Party to restrict its primaries to white voters, arguing that a political party was a private organization free to set its own membership rules. The Court initially agreed. In Smith v. Allwright (1944), it reversed course, holding that when a primary becomes an integral part of the machinery for choosing government officials, it is subject to the Fifteenth Amendment. Excluding Black voters from a primary that functionally decided the election was state action, not private choice.10Justia U.S. Supreme Court Center. Smith v. Allwright, 321 U.S. 649 (1944)
What Congress Can Do to Enforce It
Section 2 of the amendment gives Congress the power to enforce it “by appropriate legislation.”11Congress.gov. Fifteenth Amendment – Right of Citizens to Vote, Section 2 That single sentence shifted the balance considerably. Instead of leaving enforcement to individual lawsuits after the fact, Congress can regulate how elections are conducted, create federal oversight, and impose consequences on states that discriminate. In South Carolina v. Katzenbach (1966), the Supreme Court confirmed that Congress may use “any rational means to effectuate the constitutional prohibition of racial voting discrimination.”12Justia U.S. Supreme Court Center. South Carolina v. Katzenbach, 383 U.S. 301 (1966)
Early exercises of this power include the Civil Rights Acts of 1957 and 1960, which let the Attorney General seek court orders against interference with voting rights.13Legal Information Institute. U.S. Constitution Annotated – Congressional Enforcement The most consequential legislation came in 1965.
The Voting Rights Act
The Voting Rights Act was Congress’s most aggressive use of its Fifteenth Amendment enforcement power. Two provisions did most of the work. Section 2 broadly prohibits voting rules that result in the denial of the vote on account of race or color.14Office of the Law Revision Counsel. 52 USC 10301 – Denial or Abridgement of Right to Vote Section 5 required certain jurisdictions with histories of discrimination to get federal approval, known as “preclearance,” before changing any voting rule.15U.S. Department of Justice. About Section 5 of the Voting Rights Act
Preclearance was the sharpest tool. Covered states and counties could not move a polling place, redraw a district, or change voter ID requirements without first proving to the Department of Justice or a federal court in Washington, D.C., that the change would not make minority voters worse off. Initially, seven entire states were covered: Alabama, Alaska, Georgia, Louisiana, Mississippi, South Carolina, and Virginia, along with parts of several others.15U.S. Department of Justice. About Section 5 of the Voting Rights Act Congress expanded coverage in 1970 and 1975 to include Texas, Arizona, and parts of additional states.
What Shelby County Changed
In Shelby County v. Holder (2013), the Supreme Court struck down Section 4(b) of the VRA, the formula used to decide which jurisdictions needed preclearance. The Court held that the formula relied on decades-old data that no longer reflected current conditions.16Library of Congress. Shelby County v. Holder, 570 U.S. 529 (2013) Without a valid coverage formula, Section 5 became unenforceable. Congress could pass a new formula but has not done so.
The practical effect is that jurisdictions previously subject to federal review can now change their voting rules without advance approval. Challenges to discriminatory changes rely on Section 2 lawsuits, which require expensive litigation after a rule has already taken effect. In Brnovich v. Democratic National Committee (2021), the Court set a high bar for Section 2 challenges, holding that the “usual burdens of voting” don’t amount to a violation and that courts must weigh disparities in impact against a state’s interests in maintaining its rules.17Supreme Court of the United States. Brnovich v. Democratic National Committee, No. 19-1257 (2021)
Criminal and Civil Penalties for Violations
Federal law backs the Fifteenth Amendment with both criminal and civil tools. Under 18 U.S.C. § 241, anyone who conspires to prevent someone from exercising their constitutional rights, including the right to vote, faces up to 10 years in prison. If someone dies as a result, the penalty can extend to life imprisonment or death.18Office of the Law Revision Counsel. 18 USC 241 – Conspiracy Against Rights
A separate statute, 18 U.S.C. § 242, targets government officials specifically. Anyone acting under color of law who deliberately deprives someone of their constitutional rights faces up to one year in prison for a basic violation, up to 10 years if the violation involves a dangerous weapon or results in bodily injury, and up to life if someone is killed.19Office of the Law Revision Counsel. 18 USC 242 – Deprivation of Rights Under Color of Law It reaches election officials, law enforcement officers, and anyone else using a government position to suppress votes.
On the civil side, 42 U.S.C. § 1983 lets private citizens sue state officials who violate their constitutional rights, including voting rights protected by the Fifteenth Amendment. A successful lawsuit can result in an injunction stopping the discriminatory practice and monetary damages paid to the plaintiff.20Office of the Law Revision Counsel. 42 USC 1983 – Civil Action for Deprivation of Rights Individual voters do not have to wait for the Department of Justice to act.