| Incumbent re-elected. | rowspan=2 nowrap | |- | Paul J. Krebs | | Democratic | 1964 | | Incumbent retired.Democratic loss. |- ! | 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 |- ! | Thomas G. Morris | | Democratic | 1958 | Incumbent re-elected. | rowspan=2 nowrap | |- ! | E. S. Johnny Walker | | Democratic | 1964 | Incumbent re-elected. |} 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 | |- ! | Herbert Tenzer | | Democratic | 1964 | Incumbent re-elected. | 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 re-elected. | nowrap | |- ! | Emanuel Celler | | Democratic | 1922 | Incumbent re-elected. | nowrap | |- ! | Eugene James Keogh | | Democratic | 1936 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | Edna F. Kelly | | Democratic | 1949 | Incumbent re-elected. | nowrap | |- ! | Abraham J. Multer | | Democratic | 1947 | Incumbent re-elected. | nowrap | |- ! | John J. Rooney | | Democratic | 1944 | Incumbent re-elected. | nowrap | |- ! | Hugh Carey | | Democratic | 1960 | Incumbent re-elected. | nowrap | |- ! | John M. Murphy | | Democratic | 1962 | Incumbent re-elected. | nowrap | |- ! | Theodore R. Kupferman | | Republican | 1966 | Incumbent re-elected. |