Nancy Landon Kassebaum Baker (born July 29, 1932) is an American politician who represented the State of Kansas in the United States Senate from 1978 to 1997. She is the daughter of Alf Landon, who was Governor of Kansas from 1933 to 1937 and the 1936 Republican nominee for president, and the widow of former Senator and diplomat Howard Baker. She was the first woman ever elected to a full term in the Senate without her husband having previously served in Congress.