Prohibits the denial of the right to vote based on race, color or previous condition of servitude. Proposed February 26, 1869; ratified February 3, 1870, 11 months later. The Fifteenth Amendment to the United States Constitution prohibits the federal government or any state from denying or abridging a citizen's right to vote "on account of race, color, or previous condition of servitude." It was ratified on February 3, 1870, as the third and last of the Reconstruction Amendments. Wiki link