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

| State_ | Incumbent | Party | Result_ | Candidates_ |
|---|---|---|---|---|
| Vermont | George D. Aiken | Republican | Re-elected | George D. Aiken (Republican) 66.4% , Bernard G. O`Shea (Democratic) 33.6% |
| Washington | Warren G. Magnuson | Democratic | Re-elected | Warren G. Magnuson (Democratic) 61.1% , Arthur B. Langlie (Republican) 38.9% |
| West Virginia , Special: Class 1 | William R. Laird, III | Democratic | Appointee retired , Winner elected to finish term ending January 3, 1959 , Republican gain | Chapman Revercomb (Republican) 53.7% , William C. Marland (Democratic) 46.3% |
| Wisconsin | Alexander Wiley | Republican | Re-elected | Alexander Wiley (Republican) 58.6% , Henry W. Maier (Democratic) 41.2% |