What is the Nineteenth Amendment?
Ratified on August 18, 1920, the Nineteenth Amendment guarantees women the right to vote. After unsuccessfully lobbying Congress for women’s voting rights during the ratification of the Fifteenth Amendment in 1870, many suffragists focused their efforts on state legislatures and by 1918 half the states in the nation granted women at least partial, if not full, voting rights. But it was the indispensable support of women during the war effort in WWI that won widespread support, including President Woodrow Wilson, originally a dogged opponent of the measure.