Columns: District | Incumbent | Party | First elected | Result | Candidates
California 3 | John E. Moss | Democratic | 1952 | Re-elected | John E. Moss (D) 72.3% Ivaldo Lenci (R) 27.7% | California 4 | Robert L. Leggett | Democratic | 1962 | Re-elected | Robert L. Leggett (D) Unopposed | California 9 | Pete Stark Redistricted from the 8th district | Democratic | 1972 | Re-elected | Pete Stark (D) 70.6% Edson Adams (R) 29.4% | California 10 | Don Edwards Redistricted from the 9th district | Democratic | 1962 | Re-elected | Don Edwards (D) 77.0% John M. Enright (R) 23.0% | California 12 | Pete McCloskey Redistricted from the 17th district | Republican | 1967 | Re-elected | Pete McCloskey (R) 69.1% Gary G. Gillmor (D) 30.9% | California 17 | Bob Mathias Redistricted from the 18th district | Republican | 1966 | Lost re-election Democratic gain | John Hans Krebs (D) 51.9% Bob Mathias (R) 48.1% | California 23 | Thomas M. Rees Redistricted from the 26th district | Democratic | 1965 | Re-elected | Thomas M. Rees (D) 71.5% Jack E. Roberts (R) 28.5%