Kennedy Onassis gave birth to their daughter Caroline on November 27, 1957. During his senate re-election campaign, John Kennedy began to see how popular his wife was and added her to his congressional campaign. In November 1958, John was re-elected to a second term in the Senate and he thanked his wife's appearances at events and called her "simply invaluable". In 1959, Kennedy Onassis stayed at the Kennedy Compound in Hyannis Port, Massachusetts caring for Caroline while her husband began raising money for a possible presidential campaign in Louisiana.