Timothy Peter Johnson was an American lawyer and politician who served as a United States senator from South Dakota from 1997 to 2015. A member of the Democratic Party, he served as the United States representative for South Dakota's at-large congressional district from 1987 to 1997 and in the South Dakota Legislature from 1979 to 1987. Johnson is the last Democrat to hold statewide and/or congressional office in South Dakota. He and Stephanie Herseth Sandlin are also the last Democrats to win a statewide election in South Dakota.
