The Texas Equal Suffrage Association (TESA) was an organization founded in 1903 to support white women's suffrage in Texas. It was originally formed under the name of the Texas Woman Suffrage Association (TWSA) and later renamed in 1916. TESA did allow men to join. TESA did not allow black women as members, because at the time to do so would have been "political suicide." The El Paso Colored Woman's Club applied for TESA membership in 1918, but the issue was deflected and ended up going nowhere. TESA focused most of their efforts on securing the passage of the federal amendment for women's right to vote. The organization also became the state chapter of the National American Woman Suffrage Association (NAWSA). After women earned the right to vote, TESA reformed as the Texas League of Women Voters.

The National American Woman Suffrage Association (NAWSA) was an organization formed on February 18, 1890, to advocate in favor of women's suffrage in the United States. It was created by the merger of two existing organizations, the National Woman Suffrage Association (NWSA) and the American Woman Suffrage Association (AWSA). Its membership, which was about seven thousand at the time it was formed, eventually increased to two million, making it the largest voluntary organization in the nation. It played a pivotal role in the passing of the Nineteenth Amendment to the United States Constitution, which in 1920 guaranteed women's right to vote.