Who was the first woman to serve as both a U.S. Congresswoman and a U.S. Senator?

Margaret Madeline Chase Smith (December 14, 1897 – May 29, 1995) was a United States politician. A member of the Republican Party, she served as a U.S Representative (1940–49) and a U.S. Senator (1949–73) from Maine. She was the first woman to serve in both houses of the United States Congress, and the first woman to represent Maine in either. A moderate Republican, she was among the first to criticize the tactics of McCarthyism in her 1950 speech, "Declaration of Conscience".