Women's Suffrage - Wyoming was the 1st to permanently grant full voting rights to women in 1890. For more than a decade, women could vote in only four western states. By 1910, the National American Woman Suffrage Association a nd other groups had grown more organized in lobbying states for voting rights. With many women's groups supporting the war effort, 23 states extended voting rights to women leading up to passage of the 19th Amendment. Source: National Constitution Center/US House Archive