James Strom Thurmond Sr. was an American politician who represented South Carolina in the United States Senate from 1954 to 2003. Before his 49 years as a senator, he served as the 103rd governor of South Carolina from 1947 to 1951. Thurmond was officially a member of the Democratic Party in the Senate until 1964, when he joined the Republican Party. He had earlier run for president in 1948 as the Dixiecrat candidate in opposition to Democratic president Harry S. Truman, receiving over a million votes and winning four states.