Six members of theUnited States House of Representatives were elected in special elections in 1963.
| District | Incumbent | This race | |||
|---|---|---|---|---|---|
| Member | Party | First elected | Results | Candidates | |
| California 1 | Clem Miller | Democratic | 1958 | Incumbent member-elect died October 7, 1962, but wasposthumously re-elected. New member elected January 22, 1963. Republican gain. |
|
| California 23 | Clyde Doyle | Democratic | 1944 1946(lost) 1948 | Incumbent died March 14, 1963. New member elected June 11, 1963. Republican gain. |
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| Pennsylvania 15 | Francis E. Walter | Democratic | 1932 | Incumbent died May 31, 1963. New member elected July 30, 1963. Democratic hold. |
|
| North Dakota 1 | Hjalmar Nygaard | Republican | 1960 | Incumbent died July 18, 1963. New member elected October 22, 1963. Republican hold. |
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| Pennsylvania 23 | Leon H. Gavin | Republican | 1942 | Incumbent died September 15, 1963. New member elected November 5, 1963. Republican hold. |
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| Texas 10 | Homer Thornberry | Democratic | 1948 | Incumbent resigned December 20, 1963, to become aU.S. District Court judge. New member elected December 21, 1963. Democratic hold. |
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