Oklahoma and the 19th Amendment

State of Oklahoma depicted in purple, white, and gold (colors of the National Woman’s Party suffrage flag) – indicating Oklahoma was one of the original 36 states to ratify the 19th Amendment. Courtesy Megan Springate.
State of Oklahoma depicted in purple, white, and gold (colors of the National Woman’s Party suffrage flag) – indicating Oklahoma was one of the original 36 states to ratify the 19th Amendment. CC0

Women first organized and collectively fought for suffrage at the national level in July of 1848. Suffragists such as Elizabeth Cady Stanton and Lucretia Mott convened a meeting of over 300 people in Seneca Falls, New York. In the following decades, women marched, protested, lobbied, and even went to jail. By the 1870s, women pressured Congress to vote on an amendment that would recognize their suffrage rights. This amendment became known as the 19th Amendment.

After decades of arguments for and against women's suffrage, Congress finally voted in favor of the 19th Amendment in 1919. This is called ratification. After Congress ratified the 19th Amendment, at least 36 states needed to vote in favor of it for it to become law.

On February 28, 1920, Oklahoma voted in favor of the 19th Amendment. By August of 1920, 36 states (including Oklahoma) approved the proposal and it became law. The proposal, now the 19th Amendment, made women’s suffrage legal all across the country.

Oklahoma state flag
Oklahoma state flag. CC0

Oklahoma Places of Women's Suffrage: State Capitol Building

After decades of organizing, women in Oklahoma won the right to vote in 1917, two years before the ratification of the 19th Amendment. When the Oklahoma Territory became a state, it ratified a state constitution that recognized women’s suffrage rights. The state constitution was signed at the State Capitol Building, which is listed on the National Register of Historic Places. The building is open for tours by appointment.

Image of capitol with columns. Photo: by Billy Hathorn, CC BY-SA 3.0

Discover More Places of Ratification

The State Capitol Building is an important place in the story of ratification. It is listed on the National Register of Historic Places.

Sources used to make these state pages include: Ida Husted Harper's History of Woman Suffrage: 1900-1920, Volume 6 (1922), the National American Woman Suffrage Association papers (Library of Congress), and National Register nominations from the National Park Service.

Last updated: April 11, 2019