Robert Marion La Follette Sr. (June 14, 1855 – June 18, 1925) was an American lawyer and politician. He represented Wisconsin in both chambers of Congress and served as the Governor of Wisconsin. A Republican for most of his career, he ran for President of the United States as the nominee of his own Progressive Party in the 1924 presidential election. Historian John D. Buenker describes La Follette as “the most celebrated figure in Wisconsin history.”