It is from the 19th Amendment to the U.S. Constitution. Because of this amendment, the voting rights of women are protected because a prior related amendment failed to include gender.
This text comes from the Nineteenth Amendment to the United States Constitution. This amendment was a step forward when it came to protecting the rights of women. The Amendment prohibited the states, as well as the federal government from denying citizens the right to vote based on their sex. This is one of the most important amendments when it comes to the universality of civil rights in the United States.