10 Jul 1890
The first territorial legislature of the Wyoming Territory granted women suffrage in 1869. In the following year, the Utah Territory followed suit. However, in 1887, the United States Congress disenfranchised Utah women with the Edmunds–Tucker Act. In 1890, Wyoming was admitted to the Union as the first state that allowed women to vote. In 1893, voters of Colorado made that state the second of the woman suffrage states and the first state where the men voted to give women the right to vote. In 1895, Utah adopted a constitution restoring the right of woman suffrage. In 1896 Idaho approved a constitutional amendment in statewide vote giving women the right to vote.