Wisconsin became the first state to ratify the 19th amendment on June 10, 1919. The amendment granted suffrage to women in America. The ratification was the result of the efforts of many different women’s rights groups that had been working since 1846. But it was surprising that Wisconsin was the first state to ratify the amendment; only seven years before, the state defeated an important suffrage referendum.

https://wisconsinhistory.org/Records/Article/CS419