District Vacator Reason for change Successor Date successor
seated
Indiana's 8th Disputed House declared McCloskey the winner after auditors from the US General Accounting Office conducted a recount and Republican floor votes were rejected Frank McCloskey (D) May 1, 1985
Louisiana's 8th Gillis W. Long (D) Died January 20, 1985 Catherine S. Long (D) March 30, 1985
Texas's 1st Sam B. Hall (D) Resigned May 27, 1985 after being appointed judge for the US District Court for the Eastern District of Texas Jim Chapman (D) August 3, 1985
New York's 6th Joseph P. Addabbo (D) Died April 10, 1986 Alton R. Waldon, Jr. (D) June 10, 1986
Hawaii's 1st Cecil Heftel (D) Resigned July 11, 1986 Neil Abercrombie (D) September 20, 1986
North Carolina's 10th Jim Broyhill (R) Resigned July 14, 1986 after being appointed to the US Senate Cass Ballenger (R) November 4, 1986
Illinois's 4th George M. O'Brien (R) Died July 17, 1986 Vacant Not filled this term
Illinois's 14th John E. Grotberg (R) Died November 15, 1986 Vacant Not filled this term
North Carolina's 3rd Charles O. Whitley (D) Resigned December 31, 1986 Vacant Not filled this term