Homa Jackson Porter, usually known as H. J. Porter or Jack Porter was a Texas businessman and political activist. A key figure in building a competitive Republican Party in his home state after a century of Democratic dominance, Porter was best known as Lyndon Johnson's general election opponent in the 1948 contest for a seat in the United States Senate.

Lyndon Baines Johnson, often referred to by his initials LBJ, was an American politician who served as the 36th president of the United States from 1963 to 1969. He became president after the assassination of John F. Kennedy, under whom he had served as the 37th vice president from 1961 to 1963. A Democrat from Texas, Johnson also served as a U.S. representative and U.S. senator.