The 19th Amendment guarantees all American women the right to vote. The nineteenth Amendment was approved by the senate on June 4, 1919, and it was sent to the states for ratification. On Election Day in 1920, millions of American women exercised their right to vote for the first time. It took activists and reformers nearly 100 years to win that right, and the campaign was not easy. Disagreements over strategy threatened to cripple the movement more than once. But on August 26, 1920, the 19th Amendment to the Constitution was finally ratified, enfranchising all American women and declaring for the first time that they, like men, deserve all the rights and responsibilities of citizenship.