Isabelle Case La Follette was a women's suffrage, peace, and civil rights activist in Wisconsin, United States. She worked with the Woman's Peace Party during World War I. At the time of her death in 1931, The New York Times called her "probably the least known yet most influential of all American women who have had to do with public affairs in this country." She was the wife and helpmate of Robert "Fighting Bob" La Follette—a prominent Progressive Republican politician both in Wisconsin and on the national scene—and as co-editor with her husband of La Follette's Weekly Magazine.

Robert Marion La Follette Jr. was an American politician who served as United States senator from Wisconsin from 1925 to 1947. A member of the La Follette family, he was often referred to by the nickname "Young Bob" to distinguish him from his father, Robert M. "Fighting Bob" La Follette, who had served as a U.S. senator and governor of Wisconsin. Robert Jr., along with his brother Philip La Follette, carried on their father's legacy of progressive politics and founded the Wisconsin Progressive Party. Robert Jr. was the last major Progressive Party politician in the U.S. Senate, ending in 1946 when the party disbanded. La Follette was defeated in the 1946 Republican Senate primary by Joseph McCarthy.