# 1956 United States House of Representatives elections

The 1956 United States House of Representatives elections was an election for the United States House of Representatives to elect members to serve in the 85th United States Congress. They were held for the most part on November 6, 1956, while Maine held theirs on September 10. They coincided with the re-election of President Dwight D. Eisenhower.
With no major national issues and the economic upswing of the 1950s in full force, voters generally chose to uphold the status quo, keeping the Republican president and the Democratic Congress.

## Overall results

410 incumbent members sought reelection, but 6 were defeated in primaries and 15 defeated in the general election for a total of 389 incumbents winning. As of 2025, these are the earliest House elections in which a still-living Representative was elected (Merwin Coad of Iowa).
| 234 | 201 |
| Democratic | Republican |
| Party | Party | Seats | Change | Seat percentage | Vote percentage | Popular Vote |
| | Democratic | 234 | 2 | 53.8% | 51.2% | 30,062,042 |
| | Republican | 201 | 2 | 46.2% | 48.7% | 28,698,083 |
| | Liberal | 0 | | 0.0% | 0.1% | 68,130 |
| | Independent | 0 | | 0.0% | <0.1% | 15,848 |
| | Prohibition | 0 | | 0.0% | <0.1% | 12,298 |
| | Independent Teacher Veteran | 0 | | 0.0% | <0.1% | 5,468 |
| | Independent Veteran | 0 | | 0.0% | <0.1% | 4,155 |
| | Conservative | 0 | | 0.0% | <0.1% | 4,066 |
| | Constitution | 0 | | 0.0% | <0.1% | 3,619 |
| | Decency in Government | 0 | | 0.0% | <0.1% | 2,459 |
| | Progress Through Freedom | 0 | | 0.0% | <0.1% | 2,246 |
| | Socialist Labor | 0 | | 0.0% | <0.1% | 2,217 |
| | Socialist | 0 | | 0.0% | <0.1% | 1,743 |
| | Free Honest Elections | 0 | | 0.0% | <0.1% | 466 |
| | Socialist Workers | 0 | | 0.0% | <0.1% | 303 |
| | Social Democratic | 0 | | 0.0% | <0.1% | 260 |
| | American Third | 0 | | 0.0% | <0.1% | 146 |
| | Others | 0 | | 0.0% | <0.1% | 2,194 |
| Totals | Totals | 435 | | 100.0% | 100.0% | 58,885,743 |
| Source: Election Statistics - Office of the Clerk |||||||
Popular vote
Democratic
51.05%
Republican
48.74%
Others
0.21% :
House seats
Democratic
53.79%
Republican
46.21% :
| House seats by party holding plurality in state  80+ to 100% Republican  80+ to 100% Democratic  60+ to 80% Republican  60+ to 80% Democratic  Up to 60% Republican  Up to 60% Democratic | 6+ Republican gain  6+ Democratic gain  3-5 Republican gain  3-5 Democratic gain  1-2 Republican gain  1-2 Democratic gain  no net change |

## Special elections

In these special elections, the winner was seated during 1956 or before January 3, 1957; ordered by election date.
| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Member | Party | First elected | Results | Candidates |
| Pennsylvania 30th | Vera D. Buchanan | Democratic | 1950 | Incumbent died November 26, 1955. New member elected January 24, 1956. Democratic hold. | ▌Y Elmer J. Holland (Democratic) 75.3% ▌David J. Smith (Republican) 24.7% |
| New York 22nd | Sidney A. Fine | Democratic | 1950 | Incumbent resigned January 2, 1956. New member elected February 7, 1956. Democratic hold. | ▌Y James C. Healey (Democratic) 72.3% ▌Sidney Burstein (Liberal) 14.8% ▌Barnett Davis (Republican) 12.9% |
| Pennsylvania 2nd | William T. Granahan | Democratic | 1944 1946 (Lost) 1948 | Incumbent died May 25, 1956. New member elected November 6, 1956. Democratic hold. | ▌Y Kathryn E. Granahan (Democratic) 61.9% ▌Robert F. Frankenfield (Republican) 38.1% |

## Alabama

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Alabama 1 | Frank W. Boykin | Democratic | 1935 (special) | Incumbent re-elected. | ▌Y Frank W. Boykin (Democratic) Uncontested |
| Alabama 2 | George M. Grant | Democratic | 1938 | Incumbent re-elected. | ▌Y George M. Grant (Democratic) Uncontested |
| Alabama 3 | George W. Andrews | Democratic | 1944 | Incumbent re-elected. | ▌Y George W. Andrews (Democratic) Uncontested |
| Alabama 4 | Kenneth A. Roberts | Democratic | 1950 | Incumbent re-elected. | ▌Y Kenneth A. Roberts (Democratic) 73.4% ▌Roy Banks (Republican) 26.6% |
| Alabama 5 | Albert Rains | Democratic | 1944 | Incumbent re-elected. | ▌Y Albert Rains (Democratic) Uncontested |
| Alabama 6 | Armistead I. Selden Jr. | Democratic | 1952 | Incumbent re-elected. | ▌Y Armistead I. Selden Jr. (Democratic) Uncontested |
| Alabama 7 | Carl Elliott | Democratic | 1948 | Incumbent re-elected. | ▌Y Carl Elliott (Democratic) Uncontested |
| Alabama 8 | Robert E. Jones Jr. | Democratic | 1947 (special) | Incumbent re-elected. | ▌Y Robert E. Jones Jr. (Democratic) 80.7% ▌J. G. Fortney (Republican) 19.3% |
| Alabama 9 | George Huddleston Jr. | Democratic | 1954 | Incumbent re-elected. | ▌Y George Huddleston Jr. (Democratic) 65.9% ▌William L. Longshore Jr. (Republican) 34.1% |

## Arizona

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Arizona 1 | John Jacob Rhodes | Republican | 1952 | Incumbent re-elected. | ▌Y John Jacob Rhodes (Republican) 54.9% ▌William P. Mahoney (Democratic) 45.1% |
| Arizona 2 | Stewart Udall | Democratic | 1954 | Incumbent re-elected. | ▌Y Stewart Udall (Democratic) 60.1% ▌Jack Speiden (Republican) 39.9% |

## Arkansas

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Arkansas 1 | Ezekiel C. Gathings | Democratic | 1938 | Incumbent re-elected. | ▌Y Ezekiel C. Gathings (Democratic) Uncontested |
| Arkansas 2 | Wilbur Mills | Democratic | 1938 | Incumbent re-elected. | ▌Y Wilbur Mills (Democratic) Uncontested |
| Arkansas 3 | James William Trimble | Democratic | 1944 | Incumbent re-elected. | ▌Y James William Trimble (Democratic) 61.3% ▌William S. Spicer (Republican) 38.7% |
| Arkansas 4 | Oren Harris | Democratic | 1940 | Incumbent re-elected. | ▌Y Oren Harris (Democratic) Uncontested |
| Arkansas 5 | Brooks Hays | Democratic | 1942 | Incumbent re-elected. | ▌Y Brooks Hays (Democratic) Uncontested |
| Arkansas 6 | William F. Norrell | Democratic | 1938 | Incumbent re-elected. | ▌Y William F. Norrell (Democratic) Uncontested |

## California

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| California 1 | Hubert B. Scudder | Republican | 1948 | Incumbent re-elected. | ▌Y Hubert B. Scudder (Republican) 53.6% ▌Clem Miller (Democratic) 46.4% |
| California 2 | Clair Engle | Democratic | 1943 (special) | Incumbent re-elected. | ▌Y Clair Engle (Democratic) Uncontested |
| California 3 | John E. Moss | Democratic | 1952 | Incumbent re-elected. | ▌Y John E. Moss (Democratic) 68.6% ▌Noel C. Stevenson (Republican) 31.4% |
| California 4 | William S. Mailliard | Republican | 1952 | Incumbent re-elected. | ▌Y William S. Mailliard (Republican) 61.9% ▌James L. Quigley (Democratic) 38.1% |
| California 5 | John F. Shelley | Democratic | 1949 (special) | Incumbent re-elected. | ▌Y John F. Shelley (Democratic) Uncontested |
| California 6 | John F. Baldwin Jr. | Republican | 1954 | Incumbent re-elected. | ▌Y John F. Baldwin Jr. (Republican) 53.7% ▌H. Roberts Quinney (Democratic) 46.3% |
| California 7 | John J. Allen Jr. | Republican | 1946 | Incumbent re-elected. | ▌Y John J. Allen Jr. (Republican) 52.8% ▌Laurance L. Cross (Democratic) 47.2% |
| California 8 | George P. Miller | Democratic | 1944 | Incumbent re-elected. | ▌Y George P. Miller (Democratic) 65.6% ▌Robert Lee Watkins (Republican) 34.4% |
| California 9 | J. Arthur Younger | Republican | 1952 | Incumbent re-elected. | ▌Y J. Arthur Younger (Republican) 60.3% ▌James T. McKay (Democratic) 39.7% |
| California 10 | Charles Gubser | Republican | 1952 | Incumbent re-elected. | ▌Y Charles Gubser (Republican) 60.7% ▌William H. Vatcher Jr. (Democratic) 39.3% |
| California 11 | J. Leroy Johnson | Republican | 1942 | Incumbent lost re-election. New member elected. Democratic gain. | ▌Y John J. McFall (Democratic) 53.1% ▌J. Leroy Johnson (Republican) 46.9% |
| California 12 | B. F. Sisk | Democratic | 1954 | Incumbent re-elected. | ▌Y B. F. Sisk (Democratic) 73.0% ▌Robert B. Moore (Republican) 27.0% |
| California 13 | Charles M. Teague | Republican | 1954 | Incumbent re-elected. | ▌Y Charles M. Teague (Republican) 59.6% ▌William Kirk Stewart (Democratic) 40.4% |
| California 14 | Harlan Hagen | Democratic | 1952 | Incumbent re-elected. | ▌Y Harlan Hagen (Democratic) 63.0% ▌Myron D. Tisdel (Republican) 37.0% |
| California 15 | Gordon L. McDonough | Republican | 1944 | Incumbent re-elected. | ▌Y Gordon L. McDonough (Republican) 57.9% ▌Emery S. Petty (Democratic) 42.1% |
| California 16 | Donald L. Jackson | Republican | 1946 | Incumbent re-elected. | ▌Y Donald L. Jackson (Republican) 60.8% ▌G. Robert Fleming (Democratic) 39.2% |
| California 17 | Cecil R. King | Democratic | 1942 | Incumbent re-elected. | ▌Y Cecil R. King (Democratic) 64.9% ▌Charles A. Franklin (Republican) 35.1% |
| California 18 | Craig Hosmer | Republican | 1952 | Incumbent re-elected. | ▌Y Craig Hosmer (Republican) 59.3% ▌Raymond C. Simpson (Democratic) 40.7% |
| California 19 | Chet Holifield | Democratic | 1942 | Incumbent re-elected. | ▌Y Chet Holifield (Democratic) 73.8% ▌Roy E. Reynolds (Republican) 26.2% |
| California 20 | Vacant | Vacant | Vacant | John Carl Hinshaw (R) died August 5, 1956. New member elected. Republican hold. | ▌Y H. Allen Smith (Republican) 70.8% ▌Eugene Radding (Democratic) 29.2% |
| California 21 | Edgar W. Hiestand | Republican | 1952 | Incumbent re-elected. | ▌Y Edgar W. Hiestand (Republican) 62.6% ▌W. C. Stethem (Democratic) 37.4% |
| California 22 | Joseph F. Holt | Republican | 1952 | Incumbent re-elected. | ▌Y Joseph F. Holt (Republican) 59.8% ▌Irving Glasband (Democratic) 40.2% |
| California 23 | Clyde Doyle | Democratic | 1948 | Incumbent re-elected. | ▌Y Clyde Doyle (Democratic) 70.9% ▌E. Elgie Calvin (Republican) 29.1% |
| California 24 | Glenard P. Lipscomb | Republican | 1953 (special) | Incumbent re-elected. | ▌Y Glenard P. Lipscomb (Republican) 61.9% ▌Fay Porter (Democratic) 38.1% |
| California 25 | Patrick J. Hillings | Republican | 1950 | Incumbent re-elected. | ▌Y Patrick J. Hillings (Republican) 63.8% ▌John G. Sobieski (Democratic) 36.2% |
| California 26 | James Roosevelt | Democratic | 1954 | Incumbent re-elected. | ▌Y James Roosevelt (Democratic) 68.8% ▌Edward H. Gibbons (Republican) 31.2% |
| California 27 | Harry R. Sheppard | Democratic | 1936 | Incumbent re-elected. | ▌Y Harry R. Sheppard (Democratic) Uncontested |
| California 28 | James B. Utt | Republican | 1952 | Incumbent re-elected. | ▌Y James B. Utt (Republican) 64.5% ▌Gordon T. Shepard (Democratic) 35.5% |
| California 29 | John Phillips | Republican | 1942 | Incumbent retired. New member elected. Democratic gain. | ▌Y Dalip Singh Saund (Democratic) 51.5% ▌Jacqueline Cochran Odlum (Republican) 48.5% |
| California 30 | Bob Wilson | Republican | 1952 | Incumbent re-elected. | ▌Y Bob Wilson (Republican) 66.7% ▌George A. Cheney (Democratic) 33.3% |

## Colorado

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Colorado 1 | Byron G. Rogers | Democratic | 1950 | Incumbent re-elected. | ▌Y Byron G. Rogers (Democratic) 57.8% ▌Ellen G. Harris (Republican) 42.2% |
| Colorado 2 | William S. Hill | Republican | 1940 | Incumbent re-elected. | ▌Y William S. Hill (Republican) 53.4% ▌Byron L. Johnson (Democratic) 46.6% |
| Colorado 3 | John Chenoweth | Republican | 1950 | Incumbent re-elected. | ▌Y John Chenoweth (Republican) 50.2% ▌Alva B. Adams (Democratic) 49.8% |
| Colorado 4 | Wayne N. Aspinall | Democratic | 1948 | Incumbent re-elected. | ▌Y Wayne N. Aspinall (Democratic) 61.8% ▌Hugh L. Caldwell (Republican) 38.2% |

## Connecticut

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Connecticut 1 | Thomas J. Dodd | Democratic | 1952 | Retired to run for U. S. Senate. Republican gain. | ▌Y Edwin H. May Jr. (Republican) 53.5% ▌Patrick J. Ward (Democratic) 46.1% ▌Donald B. LaCroix (Ind. Republican) 0.4% |
| Connecticut 2 | Horace Seely-Brown Jr. | Republican | 1950 | Incumbent re-elected. | ▌Y Horace Seely-Brown Jr. (Republican) 59.0% ▌Douglas J. Bennet (Democratic) 41.0% |
| Connecticut 3 | Albert W. Cretella | Republican | 1952 | Incumbent re-elected. | ▌Y Albert W. Cretella (Republican) 60.0% ▌Robert Giaimo (Democratic) 40.0% |
| Connecticut 4 | Albert P. Morano | Republican | 1950 | Incumbent re-elected. | ▌Y Albert P. Morano (Republican) 68.4% ▌Jack Stock (Democratic) 31.1% ▌Harold Saunders (Socialist) 0.5% |
| Connecticut 5 | James T. Patterson | Republican | 1946 | Incumbent re-elected. | ▌Y James T. Patterson (Republican) 61.9% ▌Luke F. Martin (Democratic) 38.1% |
| Connecticut at-large | Antoni Sadlak | Republican | 1946 | Incumbent re-elected. | ▌Y Antoni Sadlak (Republican) 61.5% ▌Matthew P. Kuta (Democratic) 38.5% |

## Delaware

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Delaware at-large | Harris McDowell | Democratic | 1954 | Incumbent lost re-election. Republican gain. | ▌Y Harry G. Haskell Jr. (Republican) 52.0% ▌Harris McDowell (Democratic) 48.0% |

## Florida

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Florida 1 | William C. Cramer | Republican | 1954 | Incumbent re-elected. | ▌Y William C. Cramer (Republican) 56.4% ▌Winton H. King (Democratic) 43.6% |
| Florida 2 | Charles E. Bennett | Democratic | 1948 | Incumbent re-elected. | ▌Y Charles E. Bennett (Democratic) Uncontested |
| Florida 3 | Bob Sikes | Democratic | 1940 1944 (resigned) 1974 | Incumbent re-elected. | ▌Y Bob Sikes (Democratic) 89.6% ▌Arthur Barker (Republican) 10.4% |
| Florida 4 | Dante Fascell | Democratic | 1954 | Incumbent re-elected. | ▌Y Dante Fascell (Democratic) 60.9% ▌Leland Hyzer (Republican) 39.1% |
| Florida 5 | Syd Herlong | Democratic | 1948 | Incumbent re-elected. | ▌Y Syd Herlong (Democratic) 51.4% ▌Arnold L. Lund (Republican) 48.6% |
| Florida 6 | Paul Rogers | Democratic | 1954 | Incumbent re-elected. | ▌Y Paul Rogers (Democratic) 54.7% ▌Dorothy A. Smith (Republican) 45.3% |
| Florida 7 | James A. Haley | Democratic | 1952 | Incumbent re-elected. | ▌Y James A. Haley (Democratic) 62.4% ▌Gus Nelson (Republican) 37.6% |
| Florida 8 | Donald Ray Matthews | Democratic | 1952 | Incumbent re-elected. | ▌Y Donald Ray Matthews (Democratic) Uncontested |

## Georgia

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Georgia 1 | Prince Hulon Preston Jr. | Democratic | 1946 | Incumbent re-elected. | ▌Y Prince Hulon Preston Jr. (Democratic) 78.3% ▌Harry P. Anestos (Independent) 21.2% ▌Other (Republican) 0.5% |
| Georgia 2 | J. L. Pilcher | Democratic | 1953 (special) | Incumbent re-elected. | ▌Y J. L. Pilcher (Democratic) 100.0% ▌Albert Maples (Independent) 0.01% |
| Georgia 3 | Tic Forrester | Democratic | 1950 | Incumbent re-elected. | ▌Y Tic Forrester (Democratic) 100.0% ▌J. M. Brophy (Republican) 0.004% |
| Georgia 4 | John Flynt | Democratic | 1954 | Incumbent re-elected. | ▌Y John Flynt (Democratic) 100.0% ▌Other (Republican) 0.03% |
| Georgia 5 | James C. Davis | Democratic | 1946 | Incumbent re-elected. | ▌Y James C. Davis (Democratic) 59.2% ▌Randolph W. Thrower (Republican) 40.8% ▌Joe McDow (Independent) 0.001% |
| Georgia 6 | Carl Vinson | Democratic | 1914 | Incumbent re-elected. | ▌Y Carl Vinson (Democratic) Uncontested |
| Georgia 7 | Henderson Lovelace Lanham | Democratic | 1946 | Incumbent re-elected. | ▌Y Henderson Lovelace Lanham (Democratic) 99.7% ▌H. M. King (Republican) 0.3% |
| Georgia 8 | Iris Faircloth Blitch | Democratic | 1954 | Incumbent re-elected. | ▌Y Iris Faircloth Blitch (Democratic) 100.0% ▌J. M. Kent (Republican) 0.006% |
| Georgia 9 | Phillip M. Landrum | Democratic | 1952 | Incumbent re-elected. | ▌Y Phillip M. Landrum (Democratic) Uncontested |
| Georgia 10 | Paul Brown | Democratic | 1933 (special) | Incumbent re-elected. | ▌Y Paul Brown (Democratic) 99.8% ▌Others (Republican) 0.2% |

## Idaho

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Idaho 1 | Gracie Pfost | Democratic | 1952 | Incumbent re-elected. | ▌Y Gracie Pfost (Democratic) 55.1% ▌Louise Shadduck (Republican) 44.9% |
| Idaho 2 | Hamer H. Budge | Republican | 1950 | Incumbent re-elected. | ▌Y Hamer H. Budge (Republican) 60.0% ▌J. W. Reynolds (Democratic) 40.0% |

## Illinois

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Illinois 1 | William L. Dawson | Democratic | 1942 | Incumbent re-elected. | ▌Y William L. Dawson (Democratic) 64.4% ▌George W. Lawrence (Republican) 35.6% |
| Illinois 2 | Barratt O'Hara | Democratic | 1948 1950 (defeated) 1952 | Incumbent re-elected. | ▌Y Barratt O'Hara (Democratic) 55.3% ▌George B. McKibbin (Republican) 44.7% |
| Illinois 3 | James C. Murray | Democratic | 1954 | Incumbent lost re-election. Republican gain. | ▌Y Emmet Byrne (Republican) 51.4% ▌James C. Murray (Democratic) 48.6% |
| Illinois 4 | William E. McVey | Republican | 1950 | Incumbent re-elected. | ▌Y William E. McVey (Republican) 60.0% ▌Michael Hinko (Democratic) 40.0% |
| Illinois 5 | John C. Kluczynski | Democratic | 1950 | Incumbent re-elected. | ▌Y John C. Kluczynski (Democratic) 61.8% ▌Lawrence Welnowski (Republican) 38.2% |
| Illinois 6 | Thomas J. O'Brien | Democratic | 1942 | Incumbent re-elected. | ▌Y Thomas J. O'Brien (Democratic) 62.0% ▌John J. Dillon (Republican) 38.0% |
| Illinois 7 | James Bowler | Democratic | 1953 (special) | Incumbent re-elected. | ▌Y James Bowler (Democratic) 71.7% ▌Gabriel L. Grimaldi (Republican) 28.3% |
| Illinois 8 | Thomas S. Gordon | Democratic | 1942 | Incumbent re-elected. | ▌Y Thomas S. Gordon (Democratic) 59.5% ▌Victor O. Wright (Republican) 40.5% |
| Illinois 9 | Sidney R. Yates | Democratic | 1948 | Incumbent re-elected. | ▌Y Sidney R. Yates (Democratic) 54.0% ▌Johann S. Ackerman (Republican) 46.0% |
| Illinois 10 | Richard W. Hoffman | Republican | 1948 | Incumbent retired. Republican hold. | ▌Y Harold R. Collier (Republican) 64.4% ▌Marvin E. Lore (Democratic) 35.6% |
| Illinois 11 | Timothy P. Sheehan | Republican | 1950 | Incumbent re-elected. | ▌Y Timothy P. Sheehan (Republican) 55.5% ▌Roman Pucinski (Democratic) 44.5% |
| Illinois 12 | Charles A. Boyle | Democratic | 1954 | Incumbent re-elected. | ▌Y Charles A. Boyle (Democratic) 53.2% ▌Edgar A. Jonas (Republican) 46.8% |
| Illinois 13 | Marguerite S. Church | Republican | 1950 | Incumbent re-elected. | ▌Y Marguerite S. Church (Republican) 71.6% ▌Helen Benson Leys (Democratic) 28.4% |
| Illinois 14 | Vacant | Vacant | Vacant | Chauncey W. Reed (R) died February 9, 1956. Republican hold. | ▌Y Russell W. Keeney (Republican) 70.6% ▌Harold J. Spelman (Democratic) 29.4% |
| Illinois 15 | Noah M. Mason | Republican | 1936 | Incumbent re-elected. | ▌Y Noah M. Mason (Republican) 64.6% ▌Stanley Hubbs (Democratic) 35.4% |
| Illinois 16 | Leo E. Allen | Republican | 1932 | Incumbent re-elected. | ▌Y Leo E. Allen (Republican) 63.7% ▌Glen F. Kunkle (Democratic) 36.3% |
| Illinois 17 | Leslie C. Arends | Republican | 1934 | Incumbent re-elected. | ▌Y Leslie C. Arends (Republican) 64.9% ▌C. E. Spang (Democratic) 35.1% |
| Illinois 18 | Harold H. Velde | Republican | 1948 | Incumbent retired. Republican hold. | ▌Y Robert H. Michel (Republican) 58.8% ▌Fred Allen (Democratic) 41.2% |
| Illinois 19 | Robert B. Chiperfield | Republican | 1938 | Incumbent re-elected. | ▌Y Robert B. Chiperfield (Republican) 55.8% ▌Martin P. Sutor (Democratic) 44.2% |
| Illinois 20 | Sid Simpson | Republican | 1942 | Incumbent re-elected. | ▌Y Sid Simpson (Republican) 59.6% ▌Henry W. Pollock (Democratic) 40.4% |
| Illinois 21 | Peter F. Mack Jr. | Democratic | 1948 | Incumbent re-elected. | ▌Y Peter F. Mack Jr. (Democratic) 53.5% ▌Frederic S. O'Hara (Republican) 46.5% |
| Illinois 22 | William L. Springer | Republican | 1950 | Incumbent re-elected. | ▌Y William L. Springer (Republican) 62.3% ▌E. H. Winegarner (Democratic) 37.7% |
| Illinois 23 | Charles W. Vursell | Republican | 1942 | Incumbent re-elected. | ▌Y Charles W. Vursell (Republican) 52.6% ▌Albert R. Imle (Democratic) 47.4% |
| Illinois 24 | Melvin Price | Democratic | 1944 | Incumbent re-elected. | ▌Y Melvin Price (Democratic) 68.2% ▌Waldo E. Schellenger (Republican) 31.8% |
| Illinois 25 | Kenneth J. Gray | Democratic | 1954 | Incumbent re-elected. | ▌Y Kenneth J. Gray (Democratic) 53.8% ▌Samuel J. Scott (Republican) 46.2% |

## Indiana

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Indiana 1 | Ray Madden | Democratic | 1942 | Incumbent re-elected. | ▌Y Ray Madden (Democratic) 52.6% ▌Donald K. Stimson Jr. (Republican) 47.2% ▌Harry C. Beamer (Prohibition) 0.2% |
| Indiana 2 | Charles A. Halleck | Republican | 1935 (special) | Incumbent re-elected. | ▌Y Charles A. Halleck (Republican) 62.2% ▌Thurman C. Crook (Democratic) 37.4% ▌J. O. Johnston (Prohibition) 0.3% |
| Indiana 3 | Shepard Crumpacker | Republican | 1950 | Incumbent retired. Republican hold. | ▌Y F. Jay Nimtz (Republican) 53.1% ▌John Brademas (Democratic) 46.9% |
| Indiana 4 | E. Ross Adair | Republican | 1950 | Incumbent re-elected. | ▌Y E. Ross Adair (Republican) 63.4% ▌F. Dean Bechtol (Democratic) 36.3% ▌Claude Swartz (Prohibition) 0.2% |
| Indiana 5 | John V. Beamer | Republican | 1950 | Incumbent re-elected. | ▌Y John V. Beamer (Republican) 56.4% ▌William Catlin Whitehead (Democratic) 43.1% ▌Ralph G. Stallsmith (Prohibition) 0.5% |
| Indiana 6 | Cecil M. Harden | Republican | 1948 | Incumbent re-elected. | ▌Y Cecil M. Harden (Republican) 55.0% ▌John W. King (Democratic) 44.8% ▌Woodrow Shields (Prohibition) 0.2% |
| Indiana 7 | William G. Bray | Republican | 1950 | Incumbent re-elected. | ▌Y William G. Bray (Republican) 57.2% ▌Vernon R. Hill (Democratic) 42.8% |
| Indiana 8 | Winfield K. Denton | Democratic | 1954 | Incumbent re-elected. | ▌Y Winfield K. Denton (Democratic) 50.1% ▌D. Bailey Merrill (Republican) 49.7% ▌Raymond Morris (Prohibition) 0.3% |
| Indiana 9 | Earl Wilson | Republican | 1940 | Incumbent re-elected. | ▌Y Earl Wilson (Republican) 53.4% ▌Wilfrid J. Ullirch (Democratic) 46.3% ▌Elmer D. Riggs (Prohibition) 0.3% |
| Indiana 10 | Ralph Harvey | Republican | 1947 (special) | Incumbent re-elected. | ▌Y Ralph Harvey (Republican) 56.3% ▌Gerald C. Carmony (Democratic) 43.3% ▌Thomas E. Booher (Prohibition) 0.4% |
| Indiana 11 | Charles B. Brownson | Republican | 1950 | Incumbent re-elected. | ▌Y Charles B. Brownson (Republican) 59.4% ▌John C. Carvey (Democratic) 40.5% ▌Paul W. Cox (Prohibition) 0.2% |

## Iowa

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Iowa 1 | Fred Schwengel | Republican | 1954 | Incumbent re-elected. | ▌Y Fred Schwengel (Republican) 58.0% ▌Ronald O. Bramhall (Democratic) 42.0% |
| Iowa 2 | Henry O. Talle | Republican | 1938 | Incumbent re-elected. | ▌Y Henry O. Talle (Republican) 51.4% ▌Leonard G. Wolf (Democratic) 48.6% |
| Iowa 3 | H. R. Gross | Republican | 1948 | Incumbent re-elected. | ▌Y H. R. Gross (Republican) 58.6% ▌Michael Micich (Democratic) 41.4% |
| Iowa 4 | Karl M. LeCompte | Republican | 1938 | Incumbent re-elected. | ▌Y Karl M. LeCompte (Republican) 50.7% ▌Steven V. Carter (Democratic) 49.3% |
| Iowa 5 | Paul Cunningham | Republican | 1940 | Incumbent re-elected. | ▌Y Paul Cunningham (Republican) 51.1% ▌William F. Denman (Democratic) 48.9% |
| Iowa 6 | James I. Dolliver | Republican | 1944 | Incumbent lost re-election. Democratic gain. | ▌Y Merwin Coad (Democratic) 50.1% ▌James I. Dolliver (Republican) 49.9% |
| Iowa 7 | Ben F. Jensen | Republican | 1938 | Incumbent re-elected. | ▌Y Ben F. Jensen (Republican) 55.4% ▌John L. Jensen (Democratic) 44.6% |
| Iowa 8 | Charles B. Hoeven | Republican | 1942 | Incumbent re-elected. | ▌Y Charles B. Hoeven (Republican) 60.1% ▌Robert J. Salem (Democratic) 39.9% |

## Kansas

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Kansas 1 | William H. Avery | Republican | 1954 | Incumbent re-elected. | ▌Y William H. Avery (Republican) 53.1% ▌Howard S. Miller (Democratic) 45.8% ▌Howard Hadin (Prohibition) 1.1% |
| Kansas 2 | Errett P. Scrivner | Republican | 1943 (special) | Incumbent re-elected. | ▌Y Errett P. Scrivner (Republican) 54.9% ▌Newell A. George (Democratic) 45.1% |
| Kansas 3 | Myron V. George | Republican | 1950 | Incumbent re-elected. | ▌Y Myron V. George (Republican) 55.0% ▌Denver D. Hargis (Democratic) 45.0% |
| Kansas 4 | Edward Herbert Rees | Republican | 1936 | Incumbent re-elected. | ▌Y Edward Herbert Rees (Republican) 53.8% ▌John D. Montgomery (Democratic) 46.2% |
| Kansas 5 | Clifford R. Hope | Republican | 1926 | Incumbent retired. Democratic gain. | ▌Y J. Floyd Breeding (Democratic) 50.5% ▌John W. Crutcher (Republican) 49.5% |
| Kansas 6 | Wint Smith | Republican | 1946 | Incumbent re-elected. | ▌Y Wint Smith (Republican) 51.1% ▌Elmo J. Mahoney (Democratic) 48.9% |

## Kentucky

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Kentucky 1 | Noble Jones Gregory | Democratic | 1936 | Incumbent re-elected. | ▌Y Noble Jones Gregory (Democratic) Uncontested |
| Kentucky 2 | William Natcher | Democratic | 1953 (special) | Incumbent re-elected. | ▌Y William Natcher (Democratic) 51.3% ▌R. B. Blakenship (Republican) 48.7% |
| Kentucky 3 | John M. Robsion Jr. | Republican | 1952 | Incumbent re-elected. | ▌Y John M. Robsion Jr. (Republican) 56.8% ▌Philip Ardery (Democratic) 43.2% |
| Kentucky 4 | Frank Chelf | Democratic | 1944 | Incumbent re-elected. | ▌Y Frank Chelf (Democratic) 56.3% ▌John Basil Preston (Republican) 43.7% |
| Kentucky 5 | Brent Spence | Democratic | 1930 | Incumbent re-elected. | ▌Y Brent Spence (Democratic) 55.9% ▌Jule Appel (Republican) 44.1% |
| Kentucky 6 | John C. Watts | Democratic | 1951 (special) | Incumbent re-elected. | ▌Y John C. Watts (Democratic) 52.7% ▌Wallace Jones (Republican) 47.3% |
| Kentucky 7 | Carl D. Perkins | Democratic | 1948 | Incumbent re-elected. | ▌Y Carl D. Perkins (Democratic) 52.4% ▌Scott Craft (Republican) 47.6% ▌Florence Montague (Prohibition) 0.08% |
| Kentucky 8 | Eugene Siler | Republican | 1954 | Incumbent re-elected. | ▌Y Eugene Siler (Republican) 71.7% ▌Mitchel S. Fannin (Democratic) 28.3% |

## Louisiana

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Louisiana 1 | F. Edward Hébert | Democratic | 1940 | Incumbent re-elected. | ▌Y F. Edward Hébert (Democratic) Uncontested |
| Louisiana 2 | Hale Boggs | Democratic | 1940 1942 (lost) 1946 | Incumbent re-elected. | ▌Y Hale Boggs (Democratic) 64.5% ▌George R. Blue (Republican) 35.5% |
| Louisiana 3 | Edwin E. Willis | Democratic | 1948 | Incumbent re-elected. | ▌Y Edwin E. Willis (Democratic) Uncontested |
| Louisiana 4 | Overton Brooks | Democratic | 1936 | Incumbent re-elected. | ▌Y Overton Brooks (Democratic) 68.1% ▌Calhoun Allen Jr. (Republican) 31.9% |
| Louisiana 5 | Otto Passman | Democratic | 1946 | Incumbent re-elected. | ▌Y Otto Passman (Democratic) Uncontested |
| Louisiana 6 | James H. Morrison | Democratic | 1942 | Incumbent re-elected. | ▌Y James H. Morrison (Democratic) Uncontested |
| Louisiana 7 | T. Ashton Thompson | Democratic | 1952 | Incumbent re-elected. | ▌Y T. Ashton Thompson (Democratic) Uncontested |
| Louisiana 8 | George S. Long | Democratic | 1952 | Incumbent re-elected. | ▌Y George S. Long (Democratic) Uncontested |

## Maine

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Maine 1 | Robert Hale | Republican | 1942 | Incumbent re-elected. | ▌Y Robert Hale (Republican) 50.0% ▌James C. Oliver (Democratic) 50.0% |
| Maine 2 | Charles P. Nelson | Republican | 1948 | Incumbent retired. Democratic gain. | ▌Y Frank M. Coffin (Democratic) 53.4% ▌James L. Reid (Republican) 46.6% |
| Maine 3 | Clifford McIntire | Republican | 1951 (special) | Incumbent re-elected. | ▌Y Clifford McIntire (Republican) 60.6% ▌Kenneth B. Colbath (Democratic) 39.4% |

## Maryland

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Maryland 1 | Edward T. Miller | Republican | 1946 | Incumbent re-elected. | ▌Y Edward T. Miller (Republican) 55.7% ▌Hamilton P. Fox (Democratic) 44.3% |
| Maryland 2 | James Devereux | Republican | 1950 | Incumbent re-elected. | ▌Y James Devereux (Republican) 58.1% ▌A. Gordon Boone (Democratic) 41.9% |
| Maryland 3 | Edward Garmatz | Democratic | 1947 (special) | Incumbent re-elected. | ▌Y Edward Garmatz (Democratic) 69.7% ▌Harry Kemper (Republican) 30.3% |
| Maryland 4 | George Fallon | Democratic | 1944 | Incumbent re-elected. | ▌Y George Fallon (Democratic) 53.8% ▌George Denys Hubbard (Republican) 46.2% |
| Maryland 5 | Richard Lankford | Democratic | 1954 | Incumbent re-elected. | ▌Y Richard Lankford (Democratic) 56.8% ▌William B. Prendergast (Republican) 43.2% |
| Maryland 6 | DeWitt Hyde | Republican | 1952 | Incumbent re-elected. | ▌Y DeWitt Hyde (Republican) 54.2% ▌John R. Foley (Democratic) 45.8% |
| Maryland 7 | Samuel Friedel | Democratic | 1952 | Incumbent re-elected. | ▌Y Samuel Friedel (Democratic) 59.0% ▌David A. Halley (Republican) 41.0% |

## Massachusetts

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Massachusetts 1 | John W. Heselton | Republican | 1944 | Incumbent re-elected. | ▌Y John W. Heselton (Republican) 63.6% ▌Howard W. Shea (Democratic) 36.0% ▌Gaetano T. Maratea (Prohibition) 0.4% |
| Massachusetts 2 | Edward Boland | Democratic | 1952 | Incumbent re-elected. | ▌Y Edward Boland (Democratic) 61.2% ▌Foster W. Doty (Republican) 38.8% |
| Massachusetts 3 | Philip J. Philbin | Democratic | 1942 | Incumbent re-elected. | ▌Y Philip J. Philbin (Democratic) 70.9% ▌Robert A. Parker (Republican) 29.1% |
| Massachusetts 4 | Harold Donohue | Democratic | 1946 | Incumbent re-elected. | ▌Y Harold Donohue (Democratic) 59.4% ▌Mary R. Wheller (Republican) 40.6% |
| Massachusetts 5 | Edith Nourse Rogers | Republican | 1925 (special) | Incumbent re-elected. | ▌Y Edith Nourse Rogers (Republican) 73.3% ▌Lawrence E. Corcoran (Democratic) 26.7% |
| Massachusetts 6 | William H. Bates | Republican | 1950 | Incumbent re-elected. | ▌Y William H. Bates (Republican) Uncontested |
| Massachusetts 7 | Thomas J. Lane | Democratic | 1941 (special) | Incumbent re-elected. | ▌Y Thomas J. Lane (Democratic) 68.5% ▌Robert T. Breed (Republican) 31.5% |
| Massachusetts 8 | Torbert Macdonald | Democratic | 1954 | Incumbent re-elected. | ▌Y Torbert Macdonald (Democratic) 54.8% ▌C. Eugene Farnam (Republican) 45.2% |
| Massachusetts 9 | Donald W. Nicholson | Republican | 1947 (special) | Incumbent re-elected. | ▌Y Donald W. Nicholson (Republican) 61.1% ▌William McAuliffe (Democratic) 38.9% |
| Massachusetts 10 | Laurence Curtis | Republican | 1952 | Incumbent re-elected. | ▌Y Laurence Curtis (Republican) 53.0% ▌Jackson J. Holtz (Democratic) 47.0% |
| Massachusetts 11 | Tip O'Neill | Democratic | 1952 | Incumbent re-elected. | ▌Y Tip O'Neill (Democratic) 75.3% ▌Rudolph E. Mottola (Republican) 24.7% |
| Massachusetts 12 | John W. McCormack | Democratic | 1928 | Incumbent re-elected. | ▌Y John W. McCormack (Democratic) 82.5% ▌James S. Tremblay (Republican) 17.5% |
| Massachusetts 13 | Dick Wigglesworth | Republican | 1928 | Incumbent re-elected. | ▌Y Dick Wigglesworth (Republican) 55.6% ▌Richard E. McCormack (Democratic) 44.4% |
| Massachusetts 14 | Joseph W. Martin Jr. | Republican | 1924 | Incumbent re-elected. | ▌Y Joseph W. Martin Jr. (Republican) 62.4% ▌Edward F. Doolan (Democratic) 37.6% |

## Michigan

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Michigan 1 | Thaddeus M. Machrowicz | Democratic | 1950 | Incumbent re-elected. | ▌Y Thaddeus M. Machrowicz (Democratic) 86.1% ▌Walter Czarnecki (Republican) 13.9% |
| Michigan 2 | George Meader | Republican | 1950 | Incumbent re-elected. | ▌Y George Meader (Republican) 63.1% ▌Franklin J. Shepherd (Democratic) 36.6% ▌Verdon R. Dunckel (Prohibition) 0.3% |
| Michigan 3 | August E. Johansen | Republican | 1954 | Incumbent re-elected. | ▌Y August E. Johansen (Republican) 63.8% ▌Truman Barkhuff (Democratic) 35.8% ▌Clarence O. Button (Prohibition) 0.5% |
| Michigan 4 | Clare Hoffman | Republican | 1934 | Incumbent re-elected. | ▌Y Clare Hoffman (Republican) 62.0% ▌Samuel I. Clark (Democratic) 38.0% |
| Michigan 5 | Gerald Ford | Republican | 1948 | Incumbent re-elected. | ▌Y Gerald Ford (Republican) 67.1% ▌George E. Clay (Democratic) 32.9% |
| Michigan 6 | Donald Hayworth | Democratic | 1954 | Incumbent lost re-election. Republican gain. | ▌Y Charles E. Chamberlain (Republican) 50.8% ▌Donald Hayworth (Democratic) 49.0% ▌Herbert E. Crouter (Prohibition) 0.2% |
| Michigan 7 | Jesse P. Wolcott | Republican | 1930 | Incumbent retired. Republican hold. | ▌Y Robert J. McIntosh (Republican) 53.7% ▌Ira D. McCoy (Democratic) 46.3% |
| Michigan 8 | Alvin Morell Bentley | Republican | 1952 | Incumbent re-elected. | ▌Y Alvin Morell Bentley (Republican) 64.1% ▌William R. Hart (Democratic) 35.6% ▌D. Ruth Larson (Prohibition) 0.3% |
| Michigan 9 | Ruth Thompson | Republican | 1950 | Incumbent lost renomination. Republican hold. | ▌Y Robert P. Griffin (Republican) 56.0% ▌William E. Baker (Democratic) 44.0% |
| Michigan 10 | Elford Albin Cederberg | Republican | 1952 | Incumbent re-elected. | ▌Y Elford Albin Cederberg (Republican) 65.6% ▌William J. Kelly (Democratic) 34.4% |
| Michigan 11 | Victor A. Knox | Republican | 1952 | Incumbent re-elected. | ▌Y Victor A. Knox (Republican) 56.1% ▌Prentiss M. Brown Jr. (Democratic) 43.9% |
| Michigan 12 | John B. Bennett | Republican | 1946 | Incumbent re-elected. | ▌Y John B. Bennett (Republican) 56.3% ▌Joseph S. Mack (Democratic) 43.7% |
| Michigan 13 | Charles Diggs | Democratic | 1954 | Incumbent re-elected. | ▌Y Charles Diggs (Democratic) 69.8% ▌Willis F. Ward (Republican) 30.2% |
| Michigan 14 | Louis C. Rabaut | Democratic | 1948 | Incumbent re-elected. | ▌Y Louis C. Rabaut (Democratic) 56.8% ▌Harold F. Youngblood (Republican) 43.2% |
| Michigan 15 | John D. Dingell Jr. | Democratic | 1955 (special) | Incumbent re-elected. | ▌Y John D. Dingell Jr. (Democratic) 74.1% ▌Larry Middleton (Republican) 25.8% ▌Roxann Higgs (Prohibition) 0.1% |
| Michigan 16 | John Lesinski Jr. | Democratic | 1932 | Incumbent re-elected. | ▌Y John Lesinski Jr. (Democratic) 64.1% ▌Arthur Kurtz (Republican) 35.6% ▌Earl A. Johnson (Prohibition) 0.3% |
| Michigan 17 | Martha Griffiths | Democratic | 1954 | Incumbent re-elected. | ▌Y Martha Griffiths (Democratic) 53.3% ▌George E. Smith (Republican) 46.5% ▌Walter D. Carpenter (Prohibition) 0.2% |
| Michigan 18 | George A. Dondero | Republican | 1932 | Incumbent retired. Republican hold. | ▌Y William Broomfield (Republican) 56.7% ▌Paul Sutton (Democratic) 43.3% |

## Minnesota

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Minnesota 1 | August H. Andresen | Republican | 1934 | Incumbent re-elected. | ▌Y August H. Andresen (Republican) 61.5% ▌Arnold L. Fredriksen (DFL) 38.5% |
| Minnesota 2 | Joseph P. O'Hara | Republican | 1940 | Incumbent re-elected. | ▌Y Joseph P. O'Hara (Republican) 63.8% ▌Harold Zupp (DFL) 36.2% |
| Minnesota 3 | Roy Wier | Democratic-Farmer-Labor | 1948 | Incumbent re-elected. | ▌Y Roy Wier (DFL) 52.0% ▌George Mikan (Republican) 48.0% |
| Minnesota 4 | Eugene McCarthy | Democratic-Farmer-Labor | 1948 | Incumbent re-elected. | ▌Y Eugene McCarthy (DFL) 64.1% ▌Edward C. Slettedahl (Republican) 35.9% |
| Minnesota 5 | Walter Judd | Republican | 1942 | Incumbent re-elected. | ▌Y Walter Judd (Republican) 56.0% ▌Joe Robbie (DFL) 44.0% |
| Minnesota 6 | Fred Marshall | Democratic-Farmer-Labor | 1948 | Incumbent re-elected. | ▌Y Fred Marshall (DFL) 56.2% ▌Joseph L. Kaczmarek (Republican) 43.8% |
| Minnesota 7 | H. Carl Andersen | Republican | 1938 | Incumbent re-elected. | ▌Y H. Carl Andersen (Republican) 55.9% ▌Clint Haroldson (DFL) 44.1% |
| Minnesota 8 | John Blatnik | Democratic-Farmer-Labor | 1946 | Incumbent re-elected. | ▌Y John Blatnik (DFL) 73.2% ▌Alfred J. Weinberg (Republican) 26.8% |
| Minnesota 9 | Coya Knutson | Democratic-Farmer-Labor | 1954 | Incumbent re-elected. | ▌Y Coya Knutson (DFL) 52.7% ▌Harold Hagen (Republican) 47.3% |

## Mississippi

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Mississippi 1 | Thomas Abernethy | Democratic | 1942 | Incumbent re-elected. | ▌Y Thomas Abernethy (Democratic) Uncontested |
| Mississippi 2 | Jamie Whitten | Democratic | 1941 (special) | Incumbent re-elected. | ▌Y Jamie Whitten (Democratic) Uncontested |
| Mississippi 3 | Frank E. Smith | Democratic | 1950 | Incumbent re-elected. | ▌Y Frank E. Smith (Democratic) Uncontested |
| Mississippi 4 | John Bell Williams | Democratic | 1946 | Incumbent re-elected. | ▌Y John Bell Williams (Democratic) Uncontested |
| Mississippi 5 | W. Arthur Winstead | Democratic | 1942 | Incumbent re-elected. | ▌Y W. Arthur Winstead (Democratic) Uncontested |
| Mississippi 6 | William M. Colmer | Democratic | 1932 | Incumbent re-elected. | ▌Y William M. Colmer (Democratic) Uncontested |

## Missouri

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Missouri 1 | Frank M. Karsten | Democratic | 1946 | Incumbent re-elected. | ▌Y Frank M. Karsten (Democratic) 66.3% ▌Bill Bangert (Republican) 33.7% |
| Missouri 2 | Thomas B. Curtis | Republican | 1950 | Incumbent re-elected. | ▌Y Thomas B. Curtis (Republican) 51.8% ▌James L. Sullivan (Democratic) 48.2% |
| Missouri 3 | Leonor Sullivan | Democratic | 1952 | Incumbent re-elected. | ▌Y Leonor Sullivan (Democratic) 69.6% ▌Sidney R. Redmond (Republican) 30.4% |
| Missouri 4 | George H. Christopher | Democratic | 1954 | Incumbent re-elected. | ▌Y George H. Christopher (Democratic) 51.8% ▌Jeffrey P. Hillelson (Republican) 48.2% |
| Missouri 5 | Richard Bolling | Democratic | 1948 | Incumbent re-elected. | ▌Y Richard Bolling (Democratic) 57.2% ▌Lem T. Jones Jr. (Republican) 42.8% |
| Missouri 6 | William Raleigh Hull Jr. | Democratic | 1954 | Incumbent re-elected. | ▌Y William Raleigh Hull Jr. (Democratic) 52.0% ▌Stanley I. Dale (Republican) 48.0% |
| Missouri 7 | Dewey Short | Republican | 1934 | Incumbent lost re-election. Democratic gain. | ▌Y Charles Harrison Brown (Democratic) 50.3% ▌Dewey Short (Republican) 49.7% |
| Missouri 8 | A. S. J. Carnahan | Democratic | 1948 | Incumbent re-elected. | ▌Y A. S. J. Carnahan (Democratic) 54.3% ▌Frank W. May (Republican) 45.7% |
| Missouri 9 | Clarence Cannon | Democratic | 1922 | Incumbent re-elected. | ▌Y Clarence Cannon (Democratic) Uncontested |
| Missouri 10 | Paul C. Jones | Democratic | 1948 | Incumbent re-elected. | ▌Y Paul C. Jones (Democratic) Uncontested |
| Missouri 11 | Morgan M. Moulder | Democratic | 1948 | Incumbent re-elected. | ▌Y Morgan M. Moulder (Democratic) 50.8% ▌George H. Miller (Republican) 49.2% |

## Montana

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Montana 1 | Lee Metcalf | Democratic | 1952 | Incumbent re-elected. | ▌Y Lee Metcalf (Democratic) 62.1% ▌Bill McDonald (Republican) 37.9% |
| Montana 2 | Orvin B. Fjare | Republican | 1954 | Incumbent lost re-election. Democratic gain. | ▌Y LeRoy H. Anderson (Democratic) 50.9% ▌Orvin B. Fjare (Republican) 49.1% |

## Nebraska

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Nebraska 1 | Phil Weaver | Republican | 1954 | Incumbent re-elected. | ▌Y Phil Weaver (Republican) 67.0% ▌Samuel Freeman (Democratic) 33.0% |
| Nebraska 2 | Jackson B. Chase | Republican | 1954 | Incumbent retired. Republican hold. | ▌Y Glenn Cunningham (Republican) 53.4% ▌Joseph V. Benesch (Democratic) 45.0% ▌Al Misegadis (Write-in) 1.7% |
| Nebraska 3 | R. D. Harrison | Republican | 1951 (special) | Incumbent re-elected. | ▌Y R. D. Harrison (Republican) 50.1% ▌Lawrence Brock (Democratic) 49.9% |
| Nebraska 4 | Arthur L. Miller | Republican | 1942 | Incumbent re-elected. | ▌Y Arthur L. Miller (Republican) 65.7% ▌Carlton W. Laird (Democratic) 34.3% |

## Nevada

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Nevada at-large | C. Clifton Young | Republican | 1952 | Incumbent retired to run for U. S. Senate. Democratic gain. | ▌Y Walter Baring (Democratic) 54.2% ▌Richard W. Horton (Republican) 45.8% |

## New Hampshire

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| New Hampshire 1 | Chester E. Merrow | Republican | 1942 | Incumbent re-elected. | ▌Y Chester E. Merrow (Republican) 57.4% ▌James B. Sullivan (Democratic) 42.6% |
| New Hampshire 2 | Perkins Bass | Republican | 1954 | Incumbent re-elected. | ▌Y Perkins Bass (Republican) 65.9% ▌George F. Brown (Democratic) 34.1% |

## New Jersey

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| New Jersey 1 | Charles A. Wolverton | Republican | 1926 | Incumbent re-elected. | ▌Y Charles A. Wolverton (Republican) 58.3% ▌J. Frank Crawford (Democratic) 41.5% ▌Bernardo S. Doganiero (Socialist Labor) 0.2% |
| New Jersey 2 | T. Millet Hand | Republican | 1944 | Incumbent re-elected. | ▌Y T. Millet Hand (Republican) 67.8% ▌Thomas C. Stewart (Democratic) 32.0% ▌Morris Karp (Socialist Labor) 0.1% |
| New Jersey 3 | James C. Auchincloss | Republican | 1942 | Incumbent re-elected. | ▌Y James C. Auchincloss (Republican) 65.3% ▌Sidney Shiff (Democratic) 34.7% |
| New Jersey 4 | Frank Thompson | Democratic | 1954 | Incumbent re-elected. | ▌Y Frank Thompson (Democratic) 54.5% ▌William H. Wells (Republican) 45.5% |
| New Jersey 5 | Peter Frelinghuysen Jr. | Republican | 1952 | Incumbent re-elected. | ▌Y Peter Frelinghuysen Jr. (Republican) 64.5% ▌Francis C. Foley Jr. (Democratic) 35.4% ▌Harry Press (Socialist Labor) 0.2% |
| New Jersey 6 | Harrison A. Williams | Democratic | 1953 (special) | Incumbent lost re-election. Republican gain. | ▌Y Florence P. Dwyer (Republican) 50.6% ▌Harrison A. Williams (Democratic) 48.5% ▌Ithamar Quigley (Prohibition) 0.9% |
| New Jersey 7 | William B. Widnall | Republican | 1950 | Incumbent re-elected. | ▌Y William B. Widnall (Republican) 70.7% ▌Daniel Amster (Democratic) 29.3% |
| New Jersey 8 | Gordon Canfield | Republican | 1940 | Incumbent re-elected. | ▌Y Gordon Canfield (Republican) 60.8% ▌Walter H. Gardner (Democratic) 38.7% ▌Harry Santhouse (Socialist Labor) 0.4% ▌Stephen Bell (American Third) 0.09% |
| New Jersey 9 | Frank C. Osmers Jr. | Republican | 1951 (special) | Incumbent re-elected. | ▌Y Frank C. Osmers Jr. (Republican) 67.8% ▌Robert D. Gruen (Democratic) 31.9% ▌Herman H. Rhael (Socialist Labor) 0.3% |
| New Jersey 10 | Peter W. Rodino | Democratic | 1948 | Incumbent re-elected. | ▌Y Peter W. Rodino (Democratic) 56.1% ▌G. George Addonzio (Republican) 43.9% |
| New Jersey 11 | Hugh J. Addonizio | Democratic | 1948 | Incumbent re-elected. | ▌Y Hugh J. Addonizio (Democratic) 51.7% ▌Chester K. Ligham (Republican) 46.8% ▌William H. Smullen (American Conserv.) 1.5% |
| New Jersey 12 | Robert Kean | Republican | 1938 | Incumbent re-elected. | ▌Y Robert Kean (Republican) 59.7% ▌Irving L. Hodes (Democratic) 38.7% ▌Winfred O. Perry (Conservative) 1.4% ▌Daniel Roberts (Socialist Workers) 0.2% |
| New Jersey 13 | Alfred Sieminski | Democratic | 1950 | Incumbent re-elected. | ▌Y Alfred Sieminski (Democratic) 45.0% ▌Norman H. Roth (Republican) 44.9% ▌Mortimer P. Cullity (Independent) 4.5% ▌John F. Connelly (Independent) 3.4% ▌Anthony J. Worosile (Independent) 1.8% ▌Joseph H. Burgess (Independent) 0.4% |
| New Jersey 14 | T. James Tumulty | Democratic | 1954 | Incumbent lost re-election. Republican gain. | ▌Y Vincent J. Dellay (Republican) 52.3% ▌T. James Tumulty (Democratic) 45.6% ▌John E. Walton (Independent) 2.1% |

## New Mexico

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| New Mexico at-large | John J. Dempsey | Democratic | 1950 | Incumbent re-elected. | ▌Y John J. Dempsey (Democratic) 26.7% ▌Y Antonio M. Fernández (Democratic) 26.4% ▌Dudley Cornell (Republican) 23.6% ▌Forrest S. Atchley (Republican) 23.2% |
| New Mexico at-large | Antonio M. Fernández | Democratic | 1942 | Incumbent re-elected. | ▌Y John J. Dempsey (Democratic) 26.7% ▌Y Antonio M. Fernández (Democratic) 26.4% ▌Dudley Cornell (Republican) 23.6% ▌Forrest S. Atchley (Republican) 23.2% |

## New York

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| New York 1 | Stuyvesant Wainwright | Republican | 1952 | Incumbent re-elected. | ▌Y Stuyvesant Wainwright (Republican) 65.8% ▌T. Bronson O'Reilly (Democratic) 34.2% |
| New York 2 | Steven Derounian | Republican | 1952 | Incumbent re-elected. | ▌Y Steven Derounian (Republican) 67.5% ▌Julius J. D'Amato (Democratic) 32.5% |
| New York 3 | Frank J. Becker | Republican | 1952 | Incumbent re-elected. | ▌Y Frank J. Becker (Republican) 61.9% ▌Francis X. Hardiman (Democratic) 38.1% |
| New York 4 | Henry J. Latham | Republican | 1944 | Incumbent re-elected. | ▌Y Henry J. Latham (Republican) 55.8% ▌Joseph J. Perrini (Democratic) 44.2% |
| New York 5 | Albert H. Bosch | Republican | 1952 | Incumbent re-elected. | ▌Y Albert H. Bosch (Republican) 58.6% ▌John J. Quinn (Democratic) 41.4% |
| New York 6 | Lester Holtzman | Democratic | 1952 | Incumbent re-elected. | ▌Y Lester Holtzman (Democratic) 56.9% ▌Albert H. Buschmann (Republican) 43.1% |
| New York 7 | James J. Delaney | Democratic | 1944 1946 (lost) 1948 | Incumbent re-elected. | ▌Y James J. Delaney (Democratic) 50.0% ▌Joseph Stockinger (Republican) 50.0% |
| New York 8 | Victor Anfuso | Democratic | 1954 | Incumbent re-elected. | ▌Y Victor Anfuso (Democratic) 65.6% ▌Julius Reinlieb (Republican) 34.4% |
| New York 9 | Eugene Keogh | Democratic | 1936 | Incumbent re-elected. | ▌Y Eugene Keogh (Democratic) 62.8% ▌Benjamin W. Feldman (Republican) 37.2% |
| New York 10 | Edna F. Kelly | Democratic | 1949 (special) | Incumbent re-elected. | ▌Y Edna F. Kelly (Democratic) 73.2% ▌Abraham Sher (Republican) 26.8% |
| New York 11 | Emanuel Celler | Democratic | 1922 | Incumbent re-elected. | ▌Y Emanuel Celler (Democratic) 77.7% ▌Henry D. Dorfman (Republican) 22.3% |
| New York 12 | Francis E. Dorn | Republican | 1952 | Incumbent re-elected. | ▌Y Francis E. Dorn (Republican) 57.6% ▌Donald L. O'Toole (Democratic) 42.4% |
| New York 13 | Abraham J. Multer | Democratic | 1947 (special) | Incumbent re-elected. | ▌Y Abraham J. Multer (Democratic) 71.2% ▌Joseph Moriber (Republican) 28.8% |
| New York 14 | John J. Rooney | Democratic | 1944 | Incumbent re-elected. | ▌Y John J. Rooney (Democratic) 64.2% ▌Jacob P. Lefkowitz (Republican) 35.8% |
| New York 15 | John H. Ray | Republican | 1952 | Incumbent re-elected. | ▌Y John H. Ray (Republican) 61.8% ▌Ralph Di Iorio (Democratic) 38.2% |
| New York 16 | Adam Clayton Powell Jr. | Democratic | 1944 | Incumbent re-elected. | ▌Y Adam Clayton Powell Jr. (Democratic) 69.7% ▌Joseph A. Bailey (Republican) 19.9% ▌Formington Taylor (Liberal) 10.3% |
| New York 17 | Frederic Coudert Jr. | Republican | 1946 | Incumbent re-elected. | ▌Y Frederic Coudert Jr. (Republican) 50.9% ▌Anthony B. Akers (Democratic) 49.1% |
| New York 18 | James G. Donovan | Democratic | 1950 | Incumbent lost re-election as a Republican. Democratic hold. | ▌Y Alfred E. Santangelo (Democratic) 58.0% ▌James G. Donovan (Republican) 42.0% |
| New York 19 | Arthur George Klein | Democratic | 1946 | Incumbent retired to run for New York Supreme Court. Democratic hold. | ▌Y Leonard Farbstein (Democratic) 68.4% ▌Maurice G. Henry Jr. (Republican) 31.6% |
| New York 20 | Irwin D. Davidson | Democratic | 1954 | Incumbent retired to run for New York County Court of General Sessions. Democratic hold. | ▌Y Ludwig Teller (Democratic) 63.8% ▌Milton H. Adler (Republican) 36.2% |
| New York 21 | Herbert Zelenko | Democratic | 1954 | Incumbent re-elected. | ▌Y Herbert Zelenko (Democratic) 66.5% ▌Dalton J. Shapo (Democratic) 33.5% |
| New York 22 | James C. Healey | Democratic | February 7, 1956 | Incumbent re-elected. | ▌Y James C. Healey (Democratic) 64.1% ▌Henry Rose (Republican) 24.7% ▌David I. Wells (Liberal) 11.2% |
| New York 23 | Isidore Dollinger | Democratic | 1948 | Incumbent re-elected. | ▌Y Isidore Dollinger (Democratic) 68.5% ▌Philip Myer (Republican) 21.9% ▌Hyman Fromowitz (Liberal) 9.6% |
| New York 24 | Charles A. Buckley | Democratic | 1934 | Incumbent re-elected. | ▌Y Charles A. Buckley (Democratic) 54.7% ▌Harold Grosberg (Republican) 32.3% ▌Elias Rosenblatt (Liberal) 13.0% |
| New York 25 | Paul A. Fino | Republican | 1952 | Incumbent re-elected. | ▌Y Paul A. Fino (Republican) 59.4% ▌Edward A. Cunningham (Democratic) 35.5% ▌Bernard Tobacman (Liberal) 5.1% |
| New York 26 | Ralph A. Gamble | Republican | 1937 (special) | Incumbent retired. Republican hold. | ▌Y Edwin B. Dooley (Republican) 67.4% ▌Julia L. Crews (Democratic) 32.6% |
| New York 27 | Ralph W. Gwinn | Republican | 1944 | Incumbent re-elected. | ▌Y Ralph W. Gwinn (Republican) 58.1% ▌William D. Carlebach (Democratic) 41.9% |
| New York 28 | Katharine St. George | Republican | 1946 | Incumbent re-elected. | ▌Y Katharine St. George (Republican) 62.2% ▌William H. Mauldin (Democratic) 37.8% |
| New York 29 | J. Ernest Wharton | Republican | 1950 | Incumbent re-elected. | ▌Y J. Ernest Wharton (Republican) 71.4% ▌Vincent di Gennaro (Democratic) 28.6% |
| New York 30 | Leo W. O'Brien | Democratic | 1952 | Incumbent re-elected. | ▌Y Leo W. O'Brien (Democratic) 55.8% ▌Robert E. Gray (Republican) 44.2% |
| New York 31 | Dean P. Taylor | Republican | 1942 | Incumbent re-elected. | ▌Y Dean P. Taylor (Republican) 71.8% ▌Theodore A. Knapp (Democratic) 28.2% |
| New York 32 | Bernard W. Kearney | Republican | 1942 | Incumbent re-elected. | ▌Y Bernard W. Kearney (Republican) 67.5% ▌R. Joseph Giblin (Democratic) 32.5% |
| New York 33 | Clarence E. Kilburn | Republican | 1940 | Incumbent re-elected. | ▌Y Clarence E. Kilburn (Republican) 72.7% ▌Louis C. Britton (Democratic) 27.3% |
| New York 34 | William R. Williams | Republican | 1950 | Incumbent re-elected. | ▌Y William R. Williams (Republican) 57.5% ▌Edwin L. Slusarczyk (Democratic) 42.5% |
| New York 35 | R. Walter Riehlman | Republican | 1946 | Incumbent re-elected. | ▌Y R. Walter Riehlman (Republican) 67.0% ▌Thomas J. Lowery (Democratic) 32.2% ▌Benjamin Copley (American Labor) 0.8% |
| New York 36 | John Taber | Republican | 1922 | Incumbent re-elected. | ▌Y John Taber (Republican) 69.6% ▌Lewis S. Bell (Democratic) 30.4% |
| New York 37 | W. Sterling Cole | Republican | 1934 | Incumbent re-elected. | ▌Y W. Sterling Cole (Republican) 71.6% ▌Francis P. Hogan (Democratic) 28.4% |
| New York 38 | Kenneth Keating | Republican | 1946 | Incumbent re-elected. | ▌Y Kenneth Keating (Republican) 71.7% ▌Reed Harding (Democratic) 28.3% |
| New York 39 | Harold C. Ostertag | Republican | 1950 | Incumbent re-elected. | ▌Y Harold C. Ostertag (Republican) 70.5% ▌William H. Mostyn (Democratic) 29.5% |
| New York 40 | William E. Miller | Republican | 1950 | Incumbent re-elected. | ▌Y William E. Miller (Republican) 64.3% ▌A. Thorne Hills (Democratic) 35.7% |
| New York 41 | Edmund P. Radwan | Republican | 1950 | Incumbent re-elected. | ▌Y Edmund P. Radwan (Republican) 64.4% ▌Edward P. Jehle (Democratic) 35.6% |
| New York 42 | John R. Pillion | Republican | 1952 | Incumbent re-elected. | ▌Y John R. Pillion (Republican) 58.7% ▌James Kane Jr. (Democratic) 40.3% ▌David E. Gundlach (Liberal) 1.0% |
| New York 43 | Daniel A. Reed | Republican | 1918 | Incumbent re-elected. | ▌Y Daniel A. Reed (Republican) 68.7% ▌T. Joseph Lynch (Democratic) 31.3% |

## North Carolina

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| North Carolina 1 | Herbert C. Bonner | Democratic | 1940 | Incumbent re-elected. | ▌Y Herbert C. Bonner (Democratic) 88.6% ▌Zeno O. Ratcliff (Republican) 11.4% |
| North Carolina 2 | Lawrence H. Fountain | Democratic | 1952 | Incumbent re-elected. | ▌Y Lawrence H. Fountain (Democratic) Uncontested |
| North Carolina 3 | Graham A. Barden | Democratic | 1934 | Incumbent re-elected. | ▌Y Graham A. Barden (Democratic) 78.8% ▌Joe Reynolds (Republican) 21.2% |
| North Carolina 4 | Harold D. Cooley | Democratic | 1934 | Incumbent re-elected. | ▌Y Harold D. Cooley (Democratic) Uncontested |
| North Carolina 5 | R. Thurmond Chatham | Democratic | 1948 | Incumbent lost renomination. Democratic hold. | ▌Y Ralph James Scott (Democratic) 59.7% ▌Joe New (Republican) 40.3% |
| North Carolina 6 | Carl T. Durham | Democratic | 1938 | Incumbent re-elected. | ▌Y Carl T. Durham (Democratic) Uncontested |
| North Carolina 7 | Frank Ertel Carlyle | Democratic | 1948 | Incumbent lost renomination. Democratic hold. | ▌Y Alton Lennon (Democratic) 84.0% ▌C. Dana Malpass (Republican) 16.0% |
| North Carolina 8 | Charles B. Deane | Democratic | 1946 | Incumbent lost renomination. Democratic hold. | ▌Y Alvin Paul Kitchin (Democratic) 59.5% ▌Fred E. Myers (Republican) 40.5% |
| North Carolina 9 | Hugh Quincy Alexander | Democratic | 1952 | Incumbent re-elected. | ▌Y Hugh Quincy Alexander (Democratic) 53.9% ▌A. M. Miller (Republican) 46.1% |
| North Carolina 10 | Charles R. Jonas | Republican | 1952 | Incumbent re-elected. | ▌Y Charles R. Jonas (Republican) 62.7% ▌Ben E. Douglas (Democratic) 37.3% |
| North Carolina 11 | Woodrow W. Jones | Democratic | 1950 | Incumbent retired. Democratic hold. | ▌Y Basil Lee Whitener (Democratic) Uncontested |
| North Carolina 12 | George A. Shuford | Democratic | 1952 | Incumbent re-elected. | ▌Y George A. Shuford (Democratic) 54.5% ▌Richard C. Clarke Jr. (Republican) 45.5% |

## North Dakota

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| North Dakota at-large | Usher L. Burdick | Republican-NPL | 1948 | Incumbent re-elected. | ▌Y Usher L. Burdick (Republican) 32.0% ▌Y Otto Krueger (Republican) 30.3% ▌Agnes Geelan (Democratic-NPL) 19.1% ▌S. B. Hocking (Democratic-NPL) 18.6% |
| North Dakota at-large | Otto Krueger | Republican | 1952 | Incumbent re-elected. | ▌Y Usher L. Burdick (Republican) 32.0% ▌Y Otto Krueger (Republican) 30.3% ▌Agnes Geelan (Democratic-NPL) 19.1% ▌S. B. Hocking (Democratic-NPL) 18.6% |

## Ohio

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Ohio 1 | Gordon H. Scherer | Republican | 1952 | Incumbent re-elected. | ▌Y Gordon H. Scherer (Republican) 64.7% ▌Leonard D. Slutz (Democratic) 35.3% |
| Ohio 2 | William E. Hess | Republican | 1950 | Incumbent re-elected. | ▌Y William E. Hess (Republican) 65.5% ▌James T. Dewan (Democratic) 34.5% |
| Ohio 3 | Paul F. Schenck | Republican | 1951 (special) | Incumbent re-elected. | ▌Y Paul F. Schenck (Republican) 59.0% ▌R. William Patterson (Democratic) 41.0% |
| Ohio 4 | William McCulloch | Republican | 1947 (special) | Incumbent re-elected. | ▌Y William McCulloch (Republican) 68.8% ▌Ortha O. Barr Jr. (Democratic) 31.2% |
| Ohio 5 | Cliff Clevenger | Republican | 1938 | Incumbent re-elected. | ▌Y Cliff Clevenger (Republican) 62.3% ▌George E. Rafferty (Democratic) 37.7% |
| Ohio 6 | James G. Polk | Democratic | 1948 | Incumbent re-elected. | ▌Y James G. Polk (Democratic) 54.5% ▌Albert L. Daniels (Republican) 45.5% |
| Ohio 7 | Clarence J. Brown | Republican | 1938 | Incumbent re-elected. | ▌Y Clarence J. Brown (Republican) 65.9% ▌Joseph A. Sullivan (Democratic) 34.1% |
| Ohio 8 | Jackson E. Betts | Republican | 1950 | Incumbent re-elected. | ▌Y Jackson E. Betts (Republican) 63.5% ▌Robert M. Corry (Democratic) 36.5% |
| Ohio 9 | Thomas L. Ashley | Democratic | 1954 | Incumbent re-elected. | ▌Y Thomas L. Ashley (Democratic) 55.2% ▌Harvey G. Straub (Republican) 44.8% |
| Ohio 10 | Thomas A. Jenkins | Republican | 1924 | Incumbent re-elected. | ▌Y Thomas A. Jenkins (Republican) Uncontested |
| Ohio 11 | Oliver P. Bolton | Republican | 1952 | Incumbent retired. Republican hold. | ▌Y David S. Dennison Jr. (Republican) 58.4% ▌James P. Bennett (Democratic) 41.6% |
| Ohio 12 | John M. Vorys | Republican | 1938 | Incumbent re-elected. | ▌Y John M. Vorys (Republican) 61.8% ▌Walter J. Shapter Jr. (Democratic) 38.2% |
| Ohio 13 | A. David Baumhart Jr. | Republican | 1954 | Incumbent re-elected. | ▌Y A. David Baumhart Jr. (Republican) 70.7% ▌J. P. Henderson (Democratic) 29.3% |
| Ohio 14 | William H. Ayres | Republican | 1950 | Incumbent re-elected. | ▌Y William H. Ayres (Republican) 58.9% ▌Bernard Rosen (Democratic) 41.1% |
| Ohio 15 | John E. Henderson | Republican | 1954 | Incumbent re-elected. | ▌Y John E. Henderson (Republican) 60.5% ▌Herbert U. Smith (Democratic) 39.5% |
| Ohio 16 | Frank T. Bow | Republican | 1950 | Incumbent re-elected. | ▌Y Frank T. Bow (Republican) 55.2% ▌John McSweeney (Democratic) 44.8% |
| Ohio 17 | J. Harry McGregor | Republican | 1940 | Incumbent re-elected. | ▌Y J. Harry McGregor (Republican) 66.5% ▌Robert W. Levering (Democratic) 33.5% |
| Ohio 18 | Wayne Hays | Democratic | 1948 | Incumbent re-elected. | ▌Y Wayne Hays (Democratic) 59.6% ▌Joseph Miller (Republican) 40.4% |
| Ohio 19 | Michael J. Kirwan | Democratic | 1936 | Incumbent re-elected. | ▌Y Michael J. Kirwan (Democratic) 68.7% ▌Ralph E. Turner (Republican) 31.3% |
| Ohio 20 | Michael A. Feighan | Democratic | 1942 | Incumbent re-elected. | ▌Y Michael A. Feighan (Democratic) 65.3% ▌John H. Ferguson (Republican) 34.7% |
| Ohio 21 | Charles Vanik | Democratic | 1954 | Incumbent re-elected. | ▌Y Charles Vanik (Democratic) 71.6% ▌Charles H. Loeb (Republican) 28.4% |
| Ohio 22 | Frances P. Bolton | Republican | 1940 | Incumbent re-elected. | ▌Y Frances P. Bolton (Republican) 66.7% ▌Harry A. Blachman (Democratic) 33.3% |
| Ohio 23 | William E. Minshall Jr. | Republican | 1954 | Incumbent re-elected. | ▌Y William E. Minshall Jr. (Republican) 69.0% ▌George A. Hurley (Democratic) 31.0% |

## Oklahoma

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Oklahoma 1 | Page Belcher | Republican | 1950 | Incumbent re-elected. | ▌Y Page Belcher (Republican) 57.2% ▌Harry B. Moreland (Democratic) 42.8% |
| Oklahoma 2 | Ed Edmondson | Democratic | 1952 | Incumbent re-elected. | ▌Y Ed Edmondson (Democratic) 60.2% ▌Percy Butler (Republican) 39.8% |
| Oklahoma 3 | Carl Albert | Democratic | 1946 | Incumbent re-elected. | ▌Y Carl Albert (Democratic) 76.5% ▌Chapin Wallace (Republican) 23.0% ▌John R. Patrick (Independent) 0.5% |
| Oklahoma 4 | Tom Steed | Democratic | 1948 | Incumbent re-elected. | ▌Y Tom Steed (Democratic) 61.1% ▌Harold H. Potter (Republican) 38.9% |
| Oklahoma 5 | John Jarman | Democratic | 1950 | Incumbent re-elected. | ▌Y John Jarman (Democratic) 63.7% ▌Hobart H. Hobbs (Republican) 36.3% |
| Oklahoma 6 | Victor Wickersham | Democratic | 1948 | Incumbent lost renomination. Democratic hold. | ▌Y Toby Morris (Democratic) 68.9% ▌Fred L. Coogan (Republican) 31.1% |

## Oregon

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Oregon 1 | A. Walter Norblad | Republican | 1946 | Incumbent re-elected. | ▌Y A. Walter Norblad (Republican) 54.7% ▌Jason Lee (Democratic) 45.3% |
| Oregon 2 | Sam Coon | Republican | 1952 | Incumbent lost re-election. Democratic gain. | ▌Y Al Ullman (Democratic) 50.7% ▌Sam Coon (Republican) 49.3% |
| Oregon 3 | Edith Green | Democratic | 1954 | Incumbent re-elected. | ▌Y Edith Green (Democratic) 61.6% ▌Phil J. Roth (Republican) 38.4% |
| Oregon 4 | Harris Ellsworth | Republican | 1942 | Incumbent lost re-election. Democratic gain. | ▌Y Charles O. Porter (Democratic) 51.3% ▌Harris Ellsworth (Republican) 48.7% |

## Pennsylvania

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Pennsylvania 1 | William A. Barrett | Democratic | 1944 1946 (lost) 1948 | Incumbent re-elected. | ▌Y William A. Barrett (Democratic) 62.7% ▌A. J. Cammarota (Republican) 37.3% |
| Pennsylvania 2 | Vacant | Vacant | Vacant | William T. Granahan (D) died May 25, 1956. Democratic hold. Winner was also elected to finish the term; see above. | ▌Y Kathryn E. Granahan (Democratic) 61.89% ▌Robert F. Frankenfield (Republican) 38.11% |
| Pennsylvania 3 | James A. Byrne | Democratic | 1952 | Incumbent re-elected. | ▌Y James A. Byrne (Democratic) 59.9% ▌Charles H. Sporkin (Republican) 40.1% |
| Pennsylvania 4 | Earl Chudoff | Democratic | 1948 | Incumbent re-elected. | ▌Y Earl Chudoff (Democratic) 69.1% ▌Horace C. Scott (Republican) 30.9% |
| Pennsylvania 5 | William J. Green Jr. | Democratic | 1948 | Incumbent re-elected. | ▌Y William J. Green Jr. (Democratic) 53.3% ▌James J. Schissler (Republican) 46.7% |
| Pennsylvania 6 | Hugh Scott | Republican | 1946 | Incumbent re-elected. | ▌Y Hugh Scott (Republican) 51.5% ▌Herbert J. McGlinchey (Democratic) 48.5% |
| Pennsylvania 7 | Benjamin F. James | Republican | 1948 | Incumbent re-elected. | ▌Y Benjamin F. James (Republican) 61.9% ▌William A. Welsh (Democratic) 38.1% |
| Pennsylvania 8 | Karl C. King | Republican | 1951 (special) | Incumbent retired. Republican hold. | ▌Y Willard S. Curtin (Republican) 55.9% ▌John P. Fullam (Democratic) 44.1% |
| Pennsylvania 9 | Paul B. Dague | Republican | 1946 | Incumbent re-elected. | ▌Y Paul B. Dague (Republican) 68.4% ▌Edward G. Wilson (Democratic) 31.6% |
| Pennsylvania 10 | Joseph L. Carrigg | Republican | 1951 (special) | Incumbent re-elected. | ▌Y Joseph L. Carrigg (Republican) 55.8% ▌Jerome P. Casey (Democratic) 44.2% |
| Pennsylvania 11 | Daniel Flood | Democratic | 1944 1946 (lost) 1948 1952 (lost) 1954 | Incumbent re-elected. | ▌Y Daniel Flood (Democratic) 53.1% ▌Enoch H. Thomas Jr. (Republican) 46.9% |
| Pennsylvania 12 | Ivor D. Fenton | Republican | 1938 | Incumbent re-elected. | ▌Y Ivor D. Fenton (Republican) 56.5% ▌George G. Lindsay (Democratic) 43.5% |
| Pennsylvania 13 | Samuel K. McConnell Jr. | Republican | 1944 | Incumbent re-elected. | ▌Y Samuel K. McConnell Jr. (Republican) 66.7% ▌Alfred M. Klein (Democratic) 33.3% |
| Pennsylvania 14 | George M. Rhodes | Democratic | 1948 | Incumbent re-elected. | ▌Y George M. Rhodes (Democratic) 51.3% ▌Thomas K. Leinbach (Republican) 48.4% ▌Birch Wilson (Socialist) 0.3% |
| Pennsylvania 15 | Francis E. Walter | Democratic | 1932 | Incumbent re-elected. | ▌Y Francis E. Walter (Democratic) 55.6% ▌George M. Berg (Republican) 44.4% |
| Pennsylvania 16 | Walter M. Mumma | Republican | 1950 | Incumbent re-elected. | ▌Y Walter M. Mumma (Republican) 60.5% ▌Guy J. Swope (Democratic) 39.5% |
| Pennsylvania 17 | Alvin Bush | Republican | 1950 | Incumbent re-elected. | ▌Y Alvin Bush (Republican) 58.6% ▌Dean R. Fisher (Democratic) 41.4% |
| Pennsylvania 18 | Richard M. Simpson | Republican | 1937 (special) | Incumbent re-elected. | ▌Y Richard M. Simpson (Republican) 59.9% ▌Ross E. Hershberger (Democratic) 40.1% |
| Pennsylvania 19 | James M. Quigley | Democratic | 1954 | Incumbent lost re-election. Republican gain. | ▌Y S. Walter Stauffer (Republican) 53.8% ▌James M. Quigley (Democratic) 46.2% |
| Pennsylvania 20 | James E. Van Zandt | Republican | 1946 | Incumbent re-elected. | ▌Y James E. Van Zandt (Republican) 63.0% ▌John R. Stewart (Democratic) 37.0% |
| Pennsylvania 21 | Augustine B. Kelley | Democratic | 1940 | Incumbent re-elected. | ▌Y Augustine B. Kelley (Democratic) 56.8% ▌Herbert O. Morrison (Republican) 43.2% |
| Pennsylvania 22 | John P. Saylor | Republican | 1949 (special) | Incumbent re-elected. | ▌Y John P. Saylor (Republican) 56.9% ▌Joseph C. Dolan (Democratic) 43.1% |
| Pennsylvania 23 | Leon H. Gavin | Republican | 1942 | Incumbent re-elected. | ▌Y Leon H. Gavin (Republican) 66.1% ▌Grace M. Sloan (Democratic) 33.9% |
| Pennsylvania 24 | Carroll D. Kearns | Republican | 1946 | Incumbent re-elected. | ▌Y Carroll D. Kearns (Republican) 57.8% ▌William D. Thomas (Democratic) 42.2% |
| Pennsylvania 25 | Frank M. Clark | Democratic | 1954 | Incumbent re-elected. | ▌Y Frank M. Clark (Democratic) 51.3% ▌Sidney L. Lockley (Republican) 48.7% |
| Pennsylvania 26 | Thomas E. Morgan | Democratic | 1944 | Incumbent re-elected. | ▌Y Thomas E. Morgan (Democratic) 61.9% ▌I. Willits McCaskey (Republican) 38.1% |
| Pennsylvania 27 | James G. Fulton | Republican | 1944 | Incumbent re-elected. | ▌Y James G. Fulton (Republican) 66.0% ▌Kenneth L. Stilley (Democratic) 34.0% |
| Pennsylvania 28 | Herman P. Eberharter | Democratic | 1936 | Incumbent re-elected. | ▌Y Herman P. Eberharter (Democratic) 57.8% ▌Richard C. Witt (Republican) 42.2% |
| Pennsylvania 29 | Bob Corbett | Republican | 1938 1940 (lost) 1944 | Incumbent re-elected. | ▌Y Bob Corbett (Republican) 64.7% ▌Joseph A. Guerrier (Democratic) 35.3% |
| Pennsylvania 30 | Elmer J. Holland | Democratic | 1942 (special) 1942 (retired) 1956 (special) | Incumbent re-elected. | ▌Y Elmer J. Holland (Democratic) 59.8% ▌Ross V. Walker (Republican) 40.2% |

## Rhode Island

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Rhode Island 1 | Aime Forand | Democratic | 1940 | Incumbent re-elected. | ▌Y Aime Forand (Democratic) 56.0% ▌Samuel H. Ramsay (Republican) 44.0% |
| Rhode Island 2 | John E. Fogarty | Democratic | 1940 | Incumbent re-elected. | ▌Y John E. Fogarty (Democratic) 52.2% ▌Thomas H. Needham (Republican) 47.8% |

## South Carolina

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| South Carolina 1 | L. Mendel Rivers | Democratic | 1940 | Incumbent re-elected. | ▌Y L. Mendel Rivers (Democratic) Uncontested |
| South Carolina 2 | John J. Riley | Democratic | 1950 | Incumbent re-elected. | ▌Y John J. Riley (Democratic) Uncontested |
| South Carolina 3 | William J. B. Dorn | Democratic | 1946 1948 (retired) 1950 | Incumbent re-elected. | ▌Y William J. B. Dorn (Democratic) 93.2% ▌Maka Knox (Republican) 6.8% |
| South Carolina 4 | Robert T. Ashmore | Democratic | 1953 (special) | Incumbent re-elected. | ▌Y Robert T. Ashmore (Democratic) 85.1% ▌Dan H. Wallace Jr. (Republican) 14.9% |
| South Carolina 5 | James P. Richards | Democratic | 1932 | Incumbent retired. Democratic hold. | ▌Y Robert W. Hemphill (Democratic) Uncontested |
| South Carolina 6 | John L. McMillan | Democratic | 1938 | Incumbent re-elected. | ▌Y John L. McMillan (Democratic) Uncontested |

## South Dakota

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| South Dakota 1 | Harold Lovre | Republican | 1948 | Incumbent lost re-election. Democratic gain. | ▌Y George McGovern (Democratic) 52.4% ▌Harold Lovre (Republican) 47.6% |
| South Dakota 2 | E. Y. Berry | Republican | 1950 | Incumbent re-elected. | ▌Y E. Y. Berry (Republican) 55.9% ▌Tom Eastman Jr. (Democratic) 44.1% |

## Tennessee

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Tennessee 1 | B. Carroll Reece | Republican | 1950 | Incumbent re-elected. | ▌Y B. Carroll Reece (Republican) 72.1% ▌Arthur W. Bright (Democratic) 27.8% ▌R. G. Duvaney (Independent) 0.01% |
| Tennessee 2 | Howard Baker Sr. | Republican | 1950 | Incumbent re-elected. | ▌Y Howard Baker Sr. (Republican) 100.0% ▌R. G. Crossno (Independent) 0.001% |
| Tennessee 3 | James B. Frazier Jr. | Democratic | 1948 | Incumbent re-elected. | ▌Y James B. Frazier Jr. (Democratic) 53.7% ▌P. H. Woods (Republican) 46.3% |
| Tennessee 4 | Joe L. Evins | Democratic | 1946 | Incumbent re-elected. | ▌Y Joe L. Evins (Democratic) 98.4% ▌Joe Smith (Republican) 1.6% ▌Jack D. Walker (Independent) 0.002% |
| Tennessee 5 | Vacant | Vacant | Vacant | Percy Priest (D) died October 12, 1956. Democratic hold. | ▌Y J. Carlton Loser (Democratic) 74.5% ▌George Spence (Republican) 25.5% |
| Tennessee 6 | Ross Bass | Democratic | 1954 | Incumbent re-elected. | ▌Y Ross Bass (Democratic) Uncontested |
| Tennessee 7 | Tom J. Murray | Democratic | 1942 | Incumbent re-elected. | ▌Y Tom J. Murray (Democratic) Uncontested |
| Tennessee 8 | Jere Cooper | Democratic | 1928 | Incumbent re-elected. | ▌Y Jere Cooper (Democratic) Uncontested |
| Tennessee 9 | Clifford Davis | Democratic | 1940 | Incumbent re-elected. | ▌Y Clifford Davis (Democratic) 71.7% ▌Herbert L. Harper (Republican) 28.3% ▌Robert Dobbs (Independent) 0.003% ▌Joseph Marsh (Independent) 0.001% |

## Texas

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Texas 1 | Wright Patman | Democratic | 1928 | Incumbent re-elected. | ▌Y Wright Patman (Democratic) Uncontested |
| Texas 2 | Jack Brooks | Democratic | 1952 | Incumbent re-elected. | ▌Y Jack Brooks (Democratic) Uncontested |
| Texas 3 | Brady P. Gentry | Democratic | 1952 | Incumbent retired. Democratic hold. | ▌Y Lindley Beckworth (Democratic) 83.5% ▌R. E. Kennedy (Republican) 16.5% |
| Texas 4 | Sam Rayburn | Democratic | 1912 | Incumbent re-elected. | ▌Y Sam Rayburn (Democratic) Uncontested |
| Texas 5 | Bruce Alger | Republican | 1954 | Incumbent re-elected. | ▌Y Bruce Alger (Republican) 55.6% ▌Henry Wade (Democratic) 44.4% |
| Texas 6 | Olin E. Teague | Democratic | 1946 | Incumbent re-elected. | ▌Y Olin E. Teague (Democratic) Uncontested |
| Texas 7 | John Dowdy | Democratic | 1952 | Incumbent re-elected. | ▌Y John Dowdy (Democratic) Uncontested |
| Texas 8 | Albert Thomas | Democratic | 1936 | Incumbent re-elected. | ▌Y Albert Thomas (Democratic) 60.4% ▌C. Anthony Friloux Jr. (Republican) 38.0% ▌W. C. Miller (Constitution) 1.6% |
| Texas 9 | Clark W. Thompson | Democratic | 1947 (special) | Incumbent re-elected. | ▌Y Clark W. Thompson (Democratic) Uncontested |
| Texas 10 | Homer Thornberry | Democratic | 1948 | Incumbent re-elected. | ▌Y Homer Thornberry (Democratic) Uncontested |
| Texas 11 | William R. Poage | Democratic | 1936 | Incumbent re-elected. | ▌Y William R. Poage (Democratic) Uncontested |
| Texas 12 | Jim Wright | Democratic | 1954 | Incumbent re-elected. | ▌Y Jim Wright (Democratic) Uncontested |
| Texas 13 | Frank N. Ikard | Democratic | 1951 (special) | Incumbent re-elected. | ▌Y Frank N. Ikard (Democratic) Uncontested |
| Texas 14 | John J. Bell | Democratic | 1954 | Incumbent lost renomination. Democratic hold. | ▌Y John Young (Democratic) 87.3% ▌Olive B. Stichter (Republican) 12.7% |
| Texas 15 | Joe M. Kilgore | Democratic | 1954 | Incumbent re-elected. | ▌Y Joe M. Kilgore (Democratic) Uncontested |
| Texas 16 | J. T. Rutherford | Democratic | 1954 | Incumbent re-elected. | ▌Y J. T. Rutherford (Democratic) 64.6% ▌Charles H. Gibson (Republican) 35.4% |
| Texas 17 | Omar Burleson | Democratic | 1946 | Incumbent re-elected. | ▌Y Omar Burleson (Democratic) Uncontested |
| Texas 18 | Walter E. Rogers | Democratic | 1950 | Incumbent re-elected. | ▌Y Walter E. Rogers (Democratic) Uncontested |
| Texas 19 | George H. Mahon | Democratic | 1934 | Incumbent re-elected. | ▌Y George H. Mahon (Democratic) Uncontested |
| Texas 20 | Paul J. Kilday | Democratic | 1938 | Incumbent re-elected. | ▌Y Paul J. Kilday (Democratic) Uncontested |
| Texas 21 | O. C. Fisher | Democratic | 1942 | Incumbent re-elected. | ▌Y O. C. Fisher (Democratic) Uncontested |
| Texas at-large | Martin Dies Jr. | Democratic | 1952 | Incumbent re-elected. | ▌Y Martin Dies Jr. (Democratic) 98.5% ▌Fred T. Spangler (Constitution) 1.5% |

## Utah

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Utah 1 | Henry Aldous Dixon | Republican | 1954 | Incumbent re-elected. | ▌Y Henry Aldous Dixon (Republican) 60.9% ▌Carlyle F. Gronning (Democratic) 39.1% |
| Utah 2 | William A. Dawson | Republican | 1952 | Incumbent re-elected. | ▌Y William A. Dawson (Republican) 57.6% ▌Oscar W. McConkie Jr. (Democratic) 42.4% |

## Vermont

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Vermont at-large | Winston L. Prouty | Republican | 1950 | Incumbent re-elected. | ▌Y Winston L. Prouty (Republican) 67.1% ▌Camille E. St. Amour (Democratic) 32.9% |

## Virginia

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Virginia 1 | Edward J. Robeson Jr. | Democratic | 1950 | Incumbent re-elected. | ▌Y Edward J. Robeson Jr. (Democratic) 50.8% ▌Horace E. Henderson (Republican) 49.2% |
| Virginia 2 | Porter Hardy Jr. | Democratic | 1946 | Incumbent re-elected. | ▌Y Porter Hardy Jr. (Democratic) 76.4% ▌William R. Burns (Republican) 23.6% |
| Virginia 3 | J. Vaughan Gary | Democratic | 1945 (special) | Incumbent re-elected. | ▌Y J. Vaughan Gary (Democratic) 59.1% ▌Royal E. Cabell Jr. (Republican) 40.9% |
| Virginia 4 | Watkins Abbitt | Democratic | 1948 | Incumbent re-elected. | ▌Y Watkins Abbitt (Democratic) Uncontested |
| Virginia 5 | William M. Tuck | Democratic | 1953 (special) | Incumbent re-elected. | ▌Y William M. Tuck (Democratic) 67.4% ▌Jackson L. Kiser (Republican) 32.6% |
| Virginia 6 | Dick Poff | Republican | 1952 | Incumbent re-elected. | ▌Y Dick Poff (Republican) 62.1% ▌John L. Whitehead (Democratic) 37.6% ▌J. B. Brayman (Social Democratic) 0.3% |
| Virginia 7 | Burr Harrison | Democratic | 1946 | Incumbent re-elected. | ▌Y Burr Harrison (Democratic) 69.0% ▌A. R. Dunning (Republican) 31.0% |
| Virginia 8 | Howard W. Smith | Democratic | 1930 | Incumbent re-elected. | ▌Y Howard W. Smith (Democratic) 67.3% ▌Horace B. Clay (Republican) 32.7% |
| Virginia 9 | W. Pat Jennings | Democratic | 1954 | Incumbent re-elected. | ▌Y W. Pat Jennings (Democratic) 54.1% ▌William C. Wampler (Republican) 45.9% |
| Virginia 10 | Joel Broyhill | Republican | 1952 | Incumbent re-elected. | ▌Y Joel Broyhill (Republican) 56.2% ▌Warren D. Quenstedt (Democratic) 42.9% ▌Richard O. Read (Independent) 0.9% |

## Washington

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Washington 1 | Thomas Pelly | Republican | 1952 | Incumbent re-elected. | ▌Y Thomas Pelly (Republican) 58.1% ▌James B. Wilson (Democratic) 41.9% |
| Washington 2 | Jack Westland | Republican | 1952 | Incumbent re-elected. | ▌Y Jack Westland (Republican) 56.0% ▌Payson Peterson (Democratic) 44.0% |
| Washington 3 | Russell V. Mack | Republican | 1947 (special) | Incumbent re-elected. | ▌Y Russell V. Mack (Republican) 56.5% ▌Al McCoy (Democratic) 43.5% |
| Washington 4 | Hal Holmes | Republican | 1942 | Incumbent re-elected. | ▌Y Hal Holmes (Republican) 50.4% ▌Frank LeRoux (Democratic) 49.6% |
| Washington 5 | Walt Horan | Republican | 1942 | Incumbent re-elected. | ▌Y Walt Horan (Republican) 53.8% ▌Tom Delaney (Democratic) 46.2% |
| Washington 6 | Thor C. Tollefson | Republican | 1946 | Incumbent re-elected. | ▌Y Thor C. Tollefson (Republican) 54.0% ▌John T. McCutcheon (Democratic) 46.0% |
| Washington at-large | Don Magnuson | Democratic | 1952 | Incumbent re-elected. | ▌Y Don Magnuson (Democratic) 58.5% ▌Philip Evans (Republican) 41.5% |

## West Virginia

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| West Virginia 1 | Bob Mollohan | Democratic | 1952 | Retired to run for Governor of West Virginia. Republican gain. | ▌Y Arch A. Moore Jr. (Republican) 50.3% ▌C. Lee Spillers (Democratic) 39.7% ▌Joseph B. Lightburn (Constitution ) 10.7% |
| West Virginia 2 | Harley O. Staggers | Democratic | 1948 | Incumbent re-elected. | ▌Y Harley O. Staggers (Democratic) 52.4% ▌Mary Elkins (Republican) 47.6% |
| West Virginia 3 | Cleveland M. Bailey | Democratic | 1948 | Incumbent re-elected. | ▌Y Cleveland M. Bailey (Democratic) 51.5% ▌Daniel L. Louchery (Republican) 48.5% |
| West Virginia 4 | Maurice G. Burnside | Democratic | 1954 | Incumbent lost re-election. Republican gain. | ▌Y Will E. Neal (Republican) 52.8% ▌Maurice G. Burnside (Democratic) 47.2% |
| West Virginia 5 | Elizabeth Kee | Democratic | 1951 (special) | Incumbent re-elected. | ▌Y Elizabeth Kee (Democratic) 60.7% ▌William H. Sanders (Republican) 39.3% |
| West Virginia 6 | Robert Byrd | Democratic | 1952 | Incumbent re-elected. | ▌Y Robert Byrd (Democratic) 57.4% ▌Cleo C. Jones (Republican) 42.6% |

## Wisconsin

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Wisconsin 1 | Lawrence H. Smith | Republican | 1941 (special) | Incumbent re-elected. | ▌Y Lawrence H. Smith (Republican) 57.1% ▌Gerald T. Flynn (Democratic) 42.9% |
| Wisconsin 2 | Glenn Robert Davis | Republican | 1947 (special) | Retired to run for U. S. Senate. Republican hold. | ▌Y Donald E. Tewes (Republican) 55.3% ▌Robert Kastenmeier (Democratic) 44.7% |
| Wisconsin 3 | Gardner R. Withrow | Republican | 1948 | Incumbent re-elected. | ▌Y Gardner R. Withrow (Republican) 61.2% ▌Norman M. Clapp (Democratic) 38.8% |
| Wisconsin 4 | Clement Zablocki | Democratic | 1948 | Incumbent re-elected. | ▌Y Clement Zablocki (Democratic) 65.7% ▌William J. Burke (Republican) 34.3% |
| Wisconsin 5 | Henry S. Reuss | Democratic | 1954 | Incumbent re-elected. | ▌Y Henry S. Reuss (Democratic) 57.8% ▌Russell Wirth Jr. (Republican) 42.2% |
| Wisconsin 6 | William Van Pelt | Republican | 1950 | Incumbent re-elected. | ▌Y William Van Pelt (Republican) 67.2% ▌Rudolph J. Ploetz (Democratic) 32.8% |
| Wisconsin 7 | Melvin Laird | Republican | 1952 | Incumbent re-elected. | ▌Y Melvin Laird (Republican) 61.8% ▌Margaret Anderson (Democratic) 38.2% |
| Wisconsin 8 | John W. Byrnes | Republican | 1944 | Incumbent re-elected. | ▌Y John W. Byrnes (Republican) 64.6% ▌Milo Singler (Democratic) 35.4% |
| Wisconsin 9 | Lester Johnson | Democratic | 1953 (special) | Incumbent re-elected. | ▌Y Lester Johnson (Democratic) 51.4% ▌Arthur L. Peterson (Republican) 48.6% |
| Wisconsin 10 | Alvin O'Konski | Republican | 1942 | Incumbent re-elected. | ▌Y Alvin O'Konski (Republican) 64.5% ▌Carl E. Lauri (Democratic) 35.5% |

## Wyoming

| District | Incumbent | Incumbent | Incumbent | Results | Candidates |
| District | Senator | Party | First elected | Results | Candidates |
| Wyoming at-large | Keith Thomson | Republican | 1954 | Incumbent re-elected. | ▌Y Keith Thomson (Republican) 58.2% ▌Jerry A. O'Callaghan (Democratic) 41.8% |

## Non-voting delegates
### Alaska Territory

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Representative | Party | First elected | Results | Candidates |
| Alaska Territory at-large | Bob Bartlett | Democratic | 1944 | Incumbent re-elected. | ▌Y Bob Bartlett (Democratic) 67.0% ▌Byron A. Gillam (Republican) 33.0% |

### Hawaii Territory

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Hawaii Territory at-large | Elizabeth P. Farrington | Republican | 1954 | Incumbent lost re-election. Democratic gain. | ▌Y John A. Burns (Democratic) 55.18% ▌Elizabeth P. Farrington (Republican) 44.82% |