The primary purpose of the National Woman's Suffrage Association (NWSA), formed in 1869, was to advocate for women's voting rights.

Founded by prominent suffragists Susan B. Anthony and Elizabeth Cady Stanton, the NWSA sought to secure the legal right to vote for women across the United States. The organization aimed to address the systemic inequalities women faced and pushed for a constitutional amendment to guarantee women's suffrage. By mobilizing supporters and raising awareness, the NWSA played a crucial role in the broader women's rights movement, ultimately contributing to the passage of the 19th Amendment in 1920.