Mazie Keiko Hirono (born November 3, 1947) is an American lawyer and politician serving as the junior United States senator from Hawaii since 2013. A member of the Democratic Party, Hirono previously served as a member of the United States House of Representatives for Hawaii's 2nd congressional district from 2007 to 2013. Hirono also served as a member of the Hawaii House of Representatives from 1981 to 1995 and as Hawaii's tenth lieutenant governor from 1994 to 2002, under Ben Cayetano. She was the unsuccessful Democratic nominee for governor of Hawaii in 2002, defeated by Republican Linda Lingle in the general election.