Nancy Landon Kassebaum Baker (born July 29, 1932) represented the state of Kansas in the United States Senate from 1978 to 1997. She is the daughter of Alfred M. Landon who was the governor of Kansas from 1932 to 1937 and the 1936 Republican candidate for president.
Baker, who went by 'Nancy Landon Kassebaum' while serving in the Senate, was the first woman to serve in the body who did not succeed her husband after his death while in office. She defeated eight other Republicans in the 1978 primary elections and then defeated Democratic congressman Bill Roy in the general election. She was reelected to her Senate seat in 1984 and 1990, but did not seek re-election in 1996.
Since 1996 she has been married to former US Senator Howard Baker Jr.