The 1870 South Carolina United States House of Representatives elections were held on November 1, 1870 to select six Representatives for two-year terms from the state of South Carolina. The fifth and sixth seats were decided by an at-large election, but the House of Representatives refused to seat the two winners. The two incumbents who ran were re-elected and the two open seats were retained by the Republicans. The composition of the state delegation thus remained solely Republican.
The state believed that it was entitled to two additional seats in the House of Representatives and elected these members from an At-large congressional district. The voters voted for two candidates and the top two vote getters would be sent to Washington, but there were only two candidates running in the at-large election. White Republican J.P.M. Epping and black Republican Lucius Wimbush won the election, but the House of Representatives refused to seat them.
"Report of the Secretary of State. November 1870." Reports and Resolutions of the General Assembly of the State of South Carolina at the Regular Session, 1870-'71. Columbia, SC: Republican Printing Company, 1871, pp. 513–517.
"Political. South Carolina.". New York Times. 21 November 1870. p. 1.