Many of you probably already know that Wyoming was the first state in the US to extend voting to women, which they did as a Territory to ensure sufficient votes for statehood. More along those lines from Wikipedia’s entry on Wyoming:
In 1869, Wyoming extended much suffrage to women, at least partially in an attempt to garner enough votes to be admitted as a state. In addition to being the first U.S. state to extend suffrage to women, Wyoming was also the home of many other firsts for U.S. women in politics. It had the first female court bailiff and the first female justice of the peace in the country. Wyoming was also the first state in the Union to elect a female governor, Nellie Tayloe Ross, in 1925.
Jackson also had an all-woman, five-person city council in the 1920s.