Harold E. Hughes
Harold Everett Hughes was the 36th Governor of Iowa from 1963 until 1969; he had been a Republican earlier in his life. He also served as a Democratic United States Senator from 1969 until 1975. Wikipedia*
On the C-SPAN Networks:
Harold E. Hughes has four videos in the C-SPAN Video Library; the first appearance was a 1964 Compiled Program as a Governor for Iowa. The year with the highest average number of views per program was 1970 with an average of 4,643 views per program. Most appearances with Hubert H. Humphrey Jr. (2), Lyndon Baines Johnson (2), Bill Moyers (2).