The National Woman's Party (NWP) is an American women's political organization formed in 1916 to fight for women's suffrage. After achieving this goal with the 1920 adoption of the Nineteenth Amendment to the United States Constitution, the NWP advocated for other issues including the Equal Rights Amendment. The most prominent leader of the National Woman's Party was Alice Paul, and its most notable event was the 1917–1919 Silent Sentinels vigil outside the gates of the White House.