One of the reasons the suffrage movement was successful was the local grassroots organization of women's groups. By the early 20th century, the movement had a national organization -- the National American Woman Suffrage Association -- and a growing number of state organizations, such as the Minnesota Woman Suffrage Association. But Minnesota is a big state, and transportation was not always easy or convenient, so women who lived in rural parts of Minnesota were not always able to join the events in large urban areas like Minneapolis. Towns and counties throughout the state organized locally and held events for their communities, such as this 1916 suffrage march in Madison, Minnesota. The suffrage movement is a great example of how local politics and national politics work together to achieve a common goal.