| |- ! | Charles W. Sandman Jr. | | Republican | 1966 | Incumbent re-elected. | nowrap | |- ! | James J. Howard | | Democratic | 1964 | Incumbent re-elected. | nowrap | |- ! | Frank Thompson | | Democratic | 1954 | Incumbent re-elected. | nowrap | |- ! | Peter Frelinghuysen Jr. | | Republican | 1952 | Incumbent re-elected. | nowrap | |- ! | Edwin B. Forsythe | | Republican | 1970 | Incumbent re-elected. | nowrap | |- ! | William B. Widnall | | Republican | 1950 | Incumbent re-elected. | nowrap | |- ! | Robert A. Roe | | Democratic | 1970 | Incumbent re-elected. | nowrap | |- ! | Henry Helstoski | | Democratic | 1964 | Incumbent re-elected. | nowrap | |- ! | Peter W. Rodino | | Democratic | 1948 | Incumbent re-elected. | nowrap | |- ! | Joseph Minish | | Democratic | 1962 | Incumbent re-elected. | nowrap | |- ! | Florence P. Dwyer | | Republican | 1956 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | colspan=3 | None (district created) | | New seat.New member elected.Republican gain. | nowrap | |- ! rowspan=2 | | Dominick V. Daniels | | Democratic | 1958 | Incumbent re-elected. | rowspan=2 nowrap | |- | Cornelius Gallagher | | Democratic | 1958 | | Incumbent lost renomination.Democratic loss. |- ! | Edward J. Patten | | Democratic | 1962 | Incumbent re-elected. | nowrap | |} New Mexico |- ! | Manuel Lujan Jr. | | Republican | 1968 | Incumbent re-elected. | nowrap | |- ! | Harold L. Runnels | | Democratic | 1970 | Incumbent re-elected. | nowrap | |} New York |- ! | Otis G. Pike | | Democratic | 1960 | Incumbent re-elected. | nowrap | |- ! | James R. Grover Jr. | | Republican | 1962 | Incumbent re-elected. | nowrap | |- ! | colspan=3 | None (district created) | | New seat.New member elected.Republican gain. | nowrap | |- ! | Norman F. Lent | | Republican | 1970 | Incumbent re-elected. | nowrap | |- ! | John W. Wydler | | Republican | 1962 | Incumbent re-elected. | nowrap | |- ! rowspan=2 | | Seymour Halpern | | Republican | 1958 |