| nowrap | |- ! | Peter Frelinghuysen Jr. | | Republican | 1952 | Incumbent re-elected. | nowrap | |- ! | William T. Cahill | | Republican | 1958 | | Resigned when elected Governor of New Jersey.New member elected.Republican hold. | nowrap | |- ! | William B. Widnall | | Republican | 1950 | Incumbent re-elected. | nowrap | |- ! | Charles Samuel Joelson | | Democratic | 1960 | | Resigned when appointed judgeDemocratic hold. | 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 re-elected. | nowrap | |- ! | Cornelius Gallagher | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | Dominick V. Daniels | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | Edward J. Patten | | Democratic | 1962 | Incumbent re-elected. | nowrap | |} New Mexico |- ! | Manuel Lujan Jr. | | Republican | 1968 | Incumbent re-elected. | nowrap | |- ! | Ed Foreman | | Republican | 19621964 1968 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |} New York |- ! | Otis G. Pike | | Democratic | 1960 | Incumbent re-elected. | nowrap | |- ! | James R. Grover Jr. | | Republican | 1962 | Incumbent re-elected. | nowrap | |- ! | Lester L. Wolff | | Democratic | 1964 | Incumbent re-elected. | nowrap | |- ! | John W. Wydler | | Republican | 1962 | Incumbent re-elected. | nowrap | |- ! | Allard K. Lowenstein | | Democratic | 1968 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- ! | Seymour Halpern | | Republican | 1958 | Incumbent re-elected. | nowrap | |- ! | Joseph P. Addabbo | | Democratic | 1960 | Incumbent re-elected. | nowrap | |- ! | Benjamin Stanley Rosenthal | | Democratic | 1962 | Incumbent re-elected. | nowrap | |- ! | James J. Delaney | | Democratic | 19441946 1948 | Incumbent