The 19th Amendment, which granted women the right to vote in all U.S. elections, passed Congress on June 4, 1919. At the time, more than 20 states denied women the right to vote, with another 12 allowing them to vote only in presidential elections.

Once the amendment passed Congress, three-fourths of states needed to ratify it in order for it to become the law of the land. Illinois was one of the first states to ratify the amendment, along with neighboring Wisconsin and Michigan.

The amendment was officially ratified 95 years ago today when Tennessee narrowly passed the amendment, thus enshrining it to the Constitution.

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Read more about the history of the 19th Amendment on History.com