United States Senate elections, 1956 Race summaries Races leading to the 85th Congress

| State_ | Incumbent | Party | Result_ | Candidates_ |
|---|---|---|---|---|
| New Hampshire | Norris Cotton | Republican | Re-elected | Norris Cotton (Republican) 64.1% , Laurence M. Pickett (Democratic) 35.9% |
| New York | Herbert H. Lehman | Democratic | Retired , Republican gain | Jacob K. Javits (Republican) 53.3% , Robert F. Wagner, Jr. (Democratic) 46.7% |
| North Carolina | Sam J. Ervin, Jr. | Democratic | Re-elected | Sam J. Ervin, Jr. (Democratic) 66.6% , Joel A. Johnson (Republican) 33.4% |
| North Dakota | Milton R. Young | Republican | Re-elected | Milton R. Young (Republican) 63.6% , Quentin N. Burdick (Democratic) 36.0% |
| Ohio | George H. Bender | Republican | Lost re-election , Democratic gain | Frank J. Lausche (Democratic) 52.9% , George H. Bender (Republican) 47.1% |
| Oklahoma | A. S. Mike Monroney | Democratic | Re-elected | A. S. Mike Monroney (Democratic) 55.4% , Douglas McKeever (Republican) 44.7% |