Of the 15 New Jersey incumbents, 14 were re-elected.
| District | Incumbent | Party | First
elected | Result | Candidates |
|---|
| New Jersey|1|X}} | John E. Hunt | Republican | 1966 | Incumbent re-elected. | √ John E. Hunt (Republican) 52.5%
James J. Florio (Democratic) 47.0%
Raymond V. S. Miller (Independent) 0.2%
Dominic W. Doganiero (Soc-Lab) 0.1%
Gerrit Hoogenrad (S) 0.1% |
| New Jersey|2|X}} | Charles W. Sandman Jr. | Republican | 1966 | Incumbent re-elected. | √ Charles W. Sandman Jr. (Republican) 65.7%
John D. Rose (Democratic) 34.3% |
| New Jersey|3|X}} | James J. Howard | Democratic | 1964 | Incumbent re-elected. | √ James J. Howard (Democratic) 53.0%
William F. Dowd (Republican) 47.0% |
| New Jersey|4|X}} | Frank Thompson | Democratic | 1954 | Incumbent re-elected. | √ Frank Thompson (Democratic) 58.0%
Peter P. Garibaldi (Republican) 42.0% |
| New Jersey|5|X}} | Peter Frelinghuysen Jr. | Republican | 1952 | Incumbent re-elected. | √ Peter Frelinghuysen Jr. (Republican) 62.0%
Frederick M. Bohen (Democratic) 38.0% |
| New Jersey|6|X}} | Edwin B. Forsythe | Republican | 1970 | Incumbent re-elected. | √ Edwin B. Forsythe (Republican) 62.8%
Francis P. Brennan (Democratic) 36.1%
Ida C. Ebert (Independent) 0.6%
Bernardo S. Doganiero (Soc-Lab) 0.5% |
| New Jersey|7|X}} | William B. Widnall | Republican | 1950 | Incumbent re-elected. | √ William B. Widnall (Republican) 57.9%
Arthur J. Lesemann (Democratic) 39.9%
Martin E. Wendelken (Independent) 2.1% |
| New Jersey|8|X}} | Robert A. Roe | Democratic | 1970 | Incumbent re-elected. | √ Robert A. Roe (Democratic) 63.1%
Walter E. Johnson (Republican) 36.9% |
| New Jersey|9|X}} | Henry Helstoski | Democratic | 1964 | Incumbent re-elected. | √ Henry Helstoski (Democratic) 55.8%
Alfred D. Schiaffo (Republican) 44.2% |
| New Jersey|10|X}} | Peter W. Rodino | Democratic | 1948 | Incumbent re-elected. | √ Peter W. Rodino (Democratic) 79.7%
Kenneth C. Miller (Republican) 20.3% |
| New Jersey|11|X}} | Joseph G. Minish | Democratic | 1962 | Incumbent re-elected. | √ Joseph G. Minish (Democratic) 57.5%
Milton A. Waldor (Republican) 39.7%
Philip R. Nicolaus (Independent) 1.5%
James R. Klimaski (Peoples) 1.3% |
| New Jersey|12|X}} | Florence P. Dwyer | Republican | 1956 | Incumbent retired.
New member elected.
Republican hold. | √ Matthew John Rinaldo (Republican) 63.5%
Jerry Fitzgerald English (Democratic) 36.2%
Stanley Bogus (Independent) 0.4% |
| New Jersey|13|X}} | None (district created) | New seat.
New member elected.
Republican gain. | √ Joseph J. Maraziti (Republican) 55.7%
Helen Meyner (Democratic) 42.9%
Samuel Golub (Independent) 1.4% |
| {{ushr|New Jersey|14|X}} | Dominick V. Daniels | Democratic | 1958 | Incumbent re-elected. | √ Dominick V. Daniels (Democratic) 61.2%
Richard T. Bozzone (Republican) 34.3%
Edward F. Zampella (Independent) 3.1%
Perfecto Oyola (Independent) 0.9%
Vincent J. Carrino (Independent) 0.5% |
| {{Small>Redistricted from the 13th district}}Democratic | 1958 | Incumbent lost renomination.
Democratic loss. |
| New Jersey|15|X}} | Edward J. Patten | Democratic | 1962 | Incumbent re-elected. | √ Edward J. Patten (Democratic) 52.3%
Fuller H. Brooks (Republican) 47.7% |