This work is concerned with the development of the Progressives, a political faction of the Republican Party which was active in Wisconsin during the first half of the 20th century, throughout the Great Depression, and the Post-War era. It was during this period that the Progressives broke with the Republican Party, formed the Progressive Party and gained control of the state from 1934 through 1938, before finally dissolving in 1946, with many members moving into the Democratic Party, where they rejuvenated that moribund state party. This work, furthermore, focuses on the those Progressive leaders who operated in Wisconsin’s northern counties, a region which had a long tradition of Progressivism, the influence they had upon the creation of the Progressive Party and the political realignment which followed its dissolution.