After his death, his wife, Belle Case La Follette, remained an influential figure and Editor, watching their sons Philip and Robert enter politics. By the mid-1930s, the La Follettes had reformed the Progressive Party on the state level in the form of the Wisconsin Progressive Party. The party quickly, if briefly, became the dominant political power in the state, electing seven Progressive congressmen in 1934 and 1936. Their younger son, Philip La Follette, was elected Governor of Wisconsin; their older son, Robert M. La Follette Jr., succeeded his father as Senator, leading a caucus of Progressives composed of Progressive, Farmer-Labor, American Labor, and various Republican and Democratic Party congressional representatives.