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The 1918 United States House of Representatives elections in South Carolina were held on November 5, 1918, to select seven Representatives for two-year terms from the state of South Carolina. The primary elections were held on August 27 and the runoff elections were held two weeks later on September 10. All seven incumbents were re-elected and the composition of the state delegation remained solely Democratic.
Incumbent Democratic Congressman James F. Byrnes of the 2nd congressional district, in office since 1911, won the Democratic primary and was unopposed in the general election.
Incumbent Democratic Congressman Samuel J. Nicholls of the 4th congressional district, in office since 1915, won the Democratic primary and was unopposed in the general election.
Incumbent Democratic Congressman Asbury Francis Lever of the 7th congressional district, in office since 1901, won the Democratic primary and defeated Republican R.H. Richardson in the general election.
Jordan, Frank E. The Primary State: A History of the Democratic Party in South Carolina, 1876-1962. pp. 101–102, 105, 110, 123.
"Report of the Secretary of State to the General Assembly of South Carolina. Part II." Reports of State Officers Boards and Committees to the General Assembly of the State of South Carolina. Volume II. Columbia, SC: 1919, pp. 31–33.