According to the National Archives, on Aug. 18, 1920, women obtained the right to vote with the ratification of the 19th amendment. Although the amendment was passed by Congress on June 4, 1919, it required three-fourths of the states to make it a law.
Advocates who fought for voting rights, known as suffragists, did so in different ways. Some suffragists focused on challenging the voting laws in state courts while others attempted to pass voting legislation state by state. In 1916, two prominent suffrage organizations, the National American Woman Suffrage Association and the National Woman's Party, focused on a constitutional amendment to achieve the right to vote.