# 1940 United States House of Representatives elections

The 1940 United States House of Representatives elections were elections for the United States House of Representatives to elect members to serve in the 77th United States Congress. They were held for the most part on November 5, 1940, while Maine held theirs on September 9. They coincided with President Franklin D. Roosevelt's re-election to an unprecedented third term. His Democratic Party narrowly gained seats from the opposition Republican Party, cementing their majority. However, the election gave firm control of the US House of Representatives and Senate to the New Dealers once again, as Progressives dominated the election.
The upswing in the economy that occurred following the Recession of 1937–38 encouraged voters that the New Deal plan had been working. This allowed the Democrats to stabilize their support.
As of 2024, this was the last time the House of Representatives was made up of six parties.

## Overall results

| 267 | 6 | 162 |
| Democratic | | Republican |
| Party | Party | Total seats (change) | Total seats (change) | Seat percentage | Vote percentage | Popular vote |
| | Democratic Party | 267 | 5 | 61.3% | 51.4% | 24,227,821 |
| | Republican Party | 162 | 7 | 37.2% | 45.6% | 21,490,392 |
| | Progressive Party | 3 | 1 | 0.6% | 1.0% | 477,435 |
| | American Labor Party | 1 | | 0.2% | 0.7% | 338,770 |
| | Farmer–Labor Party | 1 | | 0.2% | 0.6% | 298,250 |
| | Independents | 1 | 1 | 0.2% | 0.2% | 113,497 |
| | Communist Party | 0 | | 0.0% | 0.2% | 95,173 |
| | Prohibition Party | 0 | | 0.0% | 0.1% | 62,504 |
| | Socialist Party | 0 | | 0.0% | <0.1% | 19,782 |
| | Socialist Labor Party | 0 | | 0.0% | <0.1% | 6,403 |
| | Union Party | 0 | | 0.8% | <0.1% | 6,401 |
| | Liberal Party | 0 | | 0.0% | <0.1% | 2,256 |
| | Fusion Party | 0 | | 0.0% | <0.1% | 2,014 |
| | No Wage Tax Party | 0 | | 0.0% | <0.1% | 864 |
| | Workers Party | 0 | | 0.0% | <0.1% | 411 |
| | Buono Food Plan Party | 0 | | 0.0% | <0.1% | 375 |
| | Peace Party | 0 | | 0.0% | <0.1% | 341 |
| | States' Rights Party | 0 | | 0.0% | <0.1% | 270 |
| | Keep America Neutral Party | 0 | | 0.0% | <0.1% | 128 |
| | Roosevelt New Deal Party | 0 | | 0.0% | <0.1% | 98 |
| | The American Way Party | 0 | | 0.0% | <0.1% | 65 |
| | Others | 0 | | 0.0% | <0.1% | 5,578 |
| Totals | Totals | 435 | | 100.0% | 100.0% | 47,144,845 |
Source: Election Statistics - Office of the Clerk
Popular vote
American Labor
0.72%
Democratic
51.39%
Farmer–Labor
0.63%
Progressive
1.01%
Republican
45.58%
Others
0.65% :
House seats
American Labor
0.23%
Democratic
61.38%
Farmer–Labor
0.23%
Progressive
0.69%
Republican
37.24%
Others
0.23% :
| House seats by party holding plurality in state  80%+ Republican  80%+ Democratic  60%+ to 80% Republican  60%+ to 80% Democratic  Up to 60% Republican  Up to 60% Democratic | Net gain in states  6+ Democratic gain  6+ Republican gain  3-5 Democratic gain  3-5 Republican gain  1-2 Democratic gain  1-2 Republican gain  1-2 Progressive gain no net change |

## Special elections

Many special elections were held. The elected winner would serve only the remainder of the incumbent Congress. Sorted by election date.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Michigan 5 | Carl Mapes | Republican | 1912 | Incumbent died December 12, 1939. New member elected February 19, 1940. Republican hold. Winner was later re-elected to the next term; see below. | ▌Y Bartel J. Jonkman (Republican) 58.61% ▌William R. McCaslin (Democratic) 41.39% |
| Ohio 17 | William A. Ashbrook | Democratic | 1906 1920 (lost) 1934 | Incumbent died January 1, 1940. New member elected February 27, 1940. Republican gain. Winner was later re-elected to the next term; see below. | ▌Y J. Harry McGregor (Republican) 54.48% ▌Byron Ashbrook (Democratic) 45.52% |
| Ohio 22 | Chester C. Bolton | Republican | 1928 1936 (lost) 1938 | Incumbent died October 29, 1939. New member elected February 27, 1940. Republican hold. Winner was later re-elected to the next term; see below. | ▌Y Frances P. Bolton (Republican) 62.69% ▌Anthony A. Fleger (Democratic) 37.31% |
| Iowa 6 | Cassius C. Dowell | Republican | 1936 | Incumbent died February 4, 1940. New member elected March 5, 1940. Republican hold. Winner was later re-elected to the next term; see below. | ▌Y Robert K. Goodwin (Republican) 60.28% ▌Bryan Allen (Democratic) 38.93% |
| Nebraska 1 | George H. Heinke | Republican | 1938 | Incumbent died January 2, 1940. New member elected April 19, 1940. Republican hold. Winner did not run for election to the next term; see below. | ▌Y John Hyde Sweet (Republican) 56.15% ▌Charles A. Dafoe (Democratic) 43.85% |
| Maine 2 | Clyde H. Smith | Republican | 1936 | Incumbent died April 8, 1940. New member elected June 3, 1940. Republican hold. Winner was later re-elected to the next term; see below. | ▌Y Margaret Chase Smith (Republican) Uncontested |
| Georgia 8 | W. Benjamin Gibbs | Democratic | 1938 | Incumbent died August 7, 1940. New member elected October 1, 1940. Democratic hold. Winner did not run for election to the next term; see below. | ▌Y Florence Reville Gibbs (Democratic) Uncontested |
| Alabama 7 | William B. Bankhead | Democratic | 1916 | Incumbent died September 15, 1940. New member elected November 5, 1940. Democratic hold. Winner did not run for election to the next term; see below. | ▌Y Zadoc L. Weatherford (Democratic) Uncontested |
| Colorado 3 | John Andrew Martin | Democratic | 1908 1912 (retired) 1932 | Incumbent died December 23, 1939. New member elected November 5, 1940. Democratic hold. Winner did not run for election to the next term; see below. | ▌Y William E. Burney (Democratic) 51.0% ▌Henry Leonard (Republican) 49.1% |
| New York 14 | William I. Sirovich | Democratic | 1926 | Incumbent died December 17, 1939. New member elected November 5, 1940. Democratic hold. Winner also elected to the next term; see below. | ▌Y Morris Michael Edelstein (Democratic) [data missing] |
| New York 22 | Edward W. Curley | Democratic | 1935 (special) | Incumbent died January 6, 1940. New member elected November 5, 1940. Democratic hold. Winner also elected to the next term; see below. | ▌Y Walter A. Lynch (Democratic) [data missing] |
| New York 31 | Wallace E. Pierce | Republican | 1938 | Incumbent died January 3, 1940. New member elected November 5, 1940. Republican hold. Winner also elected to the next term; see below. | ▌Y Clarence E. Kilburn (Republican) [data missing] |
| Tennessee 9 | Walter Chandler | Democratic | 1934 | Incumbent resigned. New member elected November 5, 1940. Democratic hold. Winner also elected to the next term; see below. | ▌Y Clifford Davis (Democratic) [data missing] |

## Alabama

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | 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 | Henry B. Steagall | Democratic | 1914 | Incumbent re-elected. | ▌Y Henry B. Steagall (Democratic) 99.6% ▌Thomas G. McNaron (Republican) 0.4% |
| Alabama 4 | Sam Hobbs | Democratic | 1934 | Incumbent re-elected. | ▌Y Sam Hobbs (Democratic) 87.9% ▌Thomas G. McNaron (Republican) 12.1% |
| Alabama 5 | Joe Starnes | Democratic | 1934 | Incumbent re-elected. | ▌Y Joe Starnes (Democratic) 100.0% |
| Alabama 6 | Pete Jarman | Democratic | 1936 | Incumbent re-elected. | ▌Y Pete Jarman (Democratic) Uncontested |
| Alabama 7 | William B. Bankhead | Democratic | 1916 | Incumbent died September 15, 1940. Democratic hold. | ▌Y Walter W. Bankhead (Democratic) 70.9% ▌A. W. Hargett (Republican) 29.1% |
| Alabama 8 | John Sparkman | Democratic | 1936 | Incumbent re-elected. | ▌Y John Sparkman (Democratic) Uncontested |
| Alabama 9 | Luther Patrick | Democratic | 1936 | Incumbent re-elected. | ▌Y Luther Patrick (Democratic) 99.1% ▌W. A. Denson (Independent) 0.9% |

## Arizona

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Arizona at-large | John R. Murdock | Democratic | 1936 | Incumbent re-elected. | ▌Y John R. Murdock (Democratic) 71.1% ▌K. T. Palmer (Republican) 28.9% |

## Arkansas

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | 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 | Clyde T. Ellis | Democratic | 1938 | Incumbent re-elected. | ▌Y Clyde T. Ellis (Democratic) 71.1% ▌Claude M. Williams (Republican) 28.9% |
| Arkansas 4 | William Fadjo Cravens | Democratic | 1939 (special) | Incumbent re-elected. | ▌Y William Fadjo Cravens (Democratic) Uncontested |
| Arkansas 5 | David D. Terry | Democratic | 1933 (special) | Incumbent re-elected. | ▌Y David D. Terry (Democratic) Uncontested |
| Arkansas 6 | William F. Norrell | Democratic | 1938 | Incumbent re-elected. | ▌Y William F. Norrell (Democratic) Uncontested |
| Arkansas 7 | Wade H. Kitchens | Democratic | 1936 | Incumbent lost renomination. Democratic hold. | ▌Y Oren Harris (Democratic) Uncontested |

## California

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| California 1 | Clarence F. Lea | Democratic | 1916 | Incumbent re-elected. | ▌Y Clarence F. Lea (Democratic) 93.3% ▌Albert J. Lima (Communist) 5.1% ▌Ernest S. Mitchell (Write-in) 1.6% |
| California 2 | Harry Lane Englebright | Republican | 1926 | Incumbent re-elected. | ▌Y Harry Lane Englebright (Republican) Uncontested |
| California 3 | Frank H. Buck | Democratic | 1932 | Incumbent re-elected. | ▌Y Frank H. Buck (Democratic) 91.0% ▌C. H. Farman (Prohibition) 7.1% ▌Charles Gricus (Communist) 1.8% |
| California 4 | Franck R. Havenner | Democratic | 1936 | Incumbent lost re-election. Republican gain. | ▌Y Thomas Rolph (Republican) 54.6% ▌Franck R. Havenner (Democratic) 44.4% ▌Archie Brown (Communist) 1.0% |
| California 5 | Richard J. Welch | Republican | 1926 | Incumbent re-elected. | ▌Y Richard J. Welch (Republican) 95.8% ▌Walter R. Lambert (Communist) 4.2% |
| California 6 | Albert E. Carter | Republican | 1924 | Incumbent re-elected. | ▌Y Albert E. Carter (Republican) 96.0% ▌Clarence Paton (Communist) 4.0% |
| California 7 | John H. Tolan | Democratic | 1934 | Incumbent re-elected. | ▌Y John H. Tolan (Democratic) 55.5% ▌Ralph R. Eltse (Republican) 43.2% ▌Alfred N. Johnson (Communist) 1.3% |
| California 8 | Jack Z. Anderson | Republican | 1938 | Incumbent re-elected. | ▌Y Jack Z. Anderson (Republican) 96.6% ▌Elizabeth Nicholas (Communist) 3.4% ▌John J. McGrath (Write-in) 0.02% |
| California 9 | Bertrand W. Gearhart | Republican | 1934 | Incumbent re-elected. | ▌Y Bertrand W. Gearhart (Republican) Uncontested |
| California 10 | Alfred J. Elliott | Democratic | 1937 (special) | Incumbent re-elected. | ▌Y Alfred J. Elliott (Democratic) 97.0% ▌Louretta Adams (Communist) 3.0% |
| California 11 | John Carl Hinshaw | Republican | 1938 | Incumbent re-elected. | ▌Y John Carl Hinshaw (Republican) 96.6% ▌Orla E. Lair (Communist) 3.4% |
| California 12 | Jerry Voorhis | Democratic | 1936 | Incumbent re-elected. | ▌Y Jerry Voorhis (Democratic) 64.0% ▌Irwin W. Minger (Republican) 35.2% ▌Albert Lewis (Communist) 0.7% |
| California 13 | Charles Kramer | Democratic | 1932 | Incumbent re-elected. | ▌Y Charles Kramer (Democratic) 75.7% ▌Charles Hiram Randall (Prohibition) 21.7% ▌Celeste Strack (Communist) 2.6% |
| California 14 | Thomas F. Ford | Democratic | 1932 | Incumbent re-elected. | ▌Y Thomas F. Ford (Democratic) 64.3% ▌Herbert L. Herberts (Republican) 33.3% ▌Pettis Perry (Communist) 2.4% |
| California 15 | John M. Costello | Democratic | 1934 | Incumbent re-elected. | ▌Y John M. Costello (Democratic) 56.2% ▌Norris J. Nelson (Republican) 42.6% ▌Emil Freed (Communist) 1.2% |
| California 16 | Leland M. Ford | Republican | 1938 | Incumbent re-elected. | ▌Y Leland M. Ford (Republican) 96.4% ▌George C. Sandy (Communist) 3.6% |
| California 17 | Lee E. Geyer | Democratic | 1938 | Incumbent re-elected. | ▌Y Lee E. Geyer (Democratic) 65.5% ▌Clifton A. Hix (Republican) 28.6% ▌Samuel C. Converse (Progressive) 4.9% ▌Harry L. Gray (Communist) 1.0% |
| California 18 | Thomas M. Eaton | Republican | 1938 | Incumbent died September 16, 1939. Republican hold. | ▌Y William Ward Johnson (Republican) 54.3% ▌Byron N. Scott (Democratic) 44.7% ▌George R. Ashby (Communist) 1.0% |
| California 19 | Harry R. Sheppard | Democratic | 1936 | Incumbent re-elected. | ▌Y Harry R. Sheppard (Democratic) 52.9% ▌Lotus H. Loudon (Republican) 47.1% |
| California 20 | Edouard Izac | Democratic | 1936 | Incumbent re-elected. | ▌Y Edouard Izac (Democratic) 51.1% ▌Ed Fletcher (Republican) 48.3% ▌Esco L. Richardson (Communist) 0.6% |

## Colorado

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Colorado 1 | Lawrence Lewis | Democratic | 1932 | Incumbent re-elected. | ▌Y Lawrence Lewis (Democratic) 64.6% ▌James D. Parriott (Republican) 34.9% ▌Ward Rogers (Socialist) 0.3% ▌James Allander (Communist) 0.2% |
| Colorado 2 | Fred N. Cummings | Democratic | 1932 | Incumbent lost re-election. Republican gain. | ▌Y William S. Hill (Republican) 53.2% ▌Fred N. Cummings (Democratic) 46.2% ▌Henry Neumann (Socialist) 0.3% ▌Robert F. Billings (Peace) 0.2% |
| Colorado 3 | John Andrew Martin | Democratic | 1932 | Incumbent died December 23, 1939. Republican gain. Winner did not run to finish the current term. | ▌Y John Chenoweth (Republican) 52.0% ▌Byron G. Rogers (Democratic) 48.0% |
| Colorado 4 | Edward T. Taylor | Democratic | 1908 | Incumbent re-elected. | ▌Y Edward T. Taylor (Democratic) 59.4% ▌Paul W. Crawford (Republican) 40.6% |

## Connecticut

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Connecticut 1 | William J. Miller | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Herman P. Kopplemann (Democratic) 54.2% ▌William J. Miller (Republican) 45.8% |
| Connecticut 2 | Thomas R. Ball | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y William J. Fitzgerald (Democratic) 52.4% ▌Thomas R. Ball (Republican) 47.3% ▌John R. McHale (Socialist) 0.3% |
| Connecticut 3 | James A. Shanley | Democratic | 1934 | Incumbent re-elected. | ▌Y James A. Shanley (Democratic) 53.6% ▌Ranulf Compton (Republican) 46.4% |
| Connecticut 4 | Albert E. Austin | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Le Roy D. Downs (Democratic) 49.1% ▌Albert E. Austin (Republican) 48.6% ▌George Moffatt (Socialist) 2.3% |
| Connecticut 5 | J. Joseph Smith | Democratic | 1934 | Incumbent re-elected. | ▌Y J. Joseph Smith (Democratic) 48.9% ▌Frank T. Johnson (Republican) 44.7% ▌James Van Hoorn (Union) 5.9% ▌John W. Ring (Socialist) 0.4% |
| Connecticut at-large | B. J. Monkiewicz | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Lucien J. Maciora (Democratic) 52.1% ▌B. J. Monkiewicz (Republican) 46.7% ▌Bellani Trombley (Socialist) 0.8% ▌Andrew Jacob Jr. (Socialist Labor) 0.2% ▌Oscar W. Nelson (Union) 0.1% |

## Delaware

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Delaware at-large | George S. Williams | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Philip A. Traynor (Democratic) 50.6% ▌George S. Williams (Republican) 47.8% ▌Royden C. Caulk (Liberal Dem.) 1.6% |

## Florida

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Florida 1 | J. Hardin Peterson | Democratic | 1932 | Incumbent re-elected. | ▌Y J. Hardin Peterson (Democratic) Uncontested |
| Florida 2 | Robert A. Green | Democratic | 1932 | Incumbent re-elected. | ▌Y Robert A. Green (Democratic) 89.1% ▌Francis McHale (Republican) 10.9% |
| Florida 3 | Millard Caldwell | Democratic | 1932 | Incumbent retired to run for U.S. senator. Democratic hold. | ▌Y Bob Sikes (Democratic) Uncontested |
| Florida 4 | Pat Cannon | Democratic | 1938 | Incumbent re-elected. | ▌Y Pat Cannon (Democratic) 75.3% ▌Bert L. Acker (Republican) 24.7% |
| Florida 5 | Joe Hendricks | Democratic | 1936 | Incumbent re-elected. | ▌Y Joe Hendricks (Democratic) 75.4% ▌Emory Akerman (Republican) 24.6% |

## Georgia

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Georgia 1 | Hugh Peterson | Democratic | 1934 | Incumbent re-elected. | ▌Y Hugh Peterson (Democratic) 99.5% ▌H. W. Sheppard (Independent) 0.4% ▌Thomas H. Gignilliat (Republican) 0.1% |
| Georgia 2 | Edward E. Cox | Democratic | 1924 | Incumbent re-elected. | ▌Y Edward E. Cox (Democratic) 96.8% ▌William Campbell (Independent) 3.2% |
| Georgia 3 | Stephen Pace | Democratic | 1936 | Incumbent re-elected. | ▌Y Stephen Pace (Democratic) Uncontested |
| Georgia 4 | Albert Sidney Camp | Democratic | 1939 (special) | Incumbent re-elected. | ▌Y Albert Sidney Camp (Democratic) Uncontested |
| Georgia 5 | Robert Ramspeck | Democratic | 1929 | Incumbent re-elected. | ▌Y Robert Ramspeck (Democratic) 99.9% ▌Henry A. Alexander (Republican) 0.1% |
| Georgia 6 | Carl Vinson | Democratic | 1914 | Incumbent re-elected. | ▌Y Carl Vinson (Democratic) 99.9% ▌Mrs. J. Ben Warren (Republican) 0.1% |
| Georgia 7 | Malcolm C. Tarver | Democratic | 1926 | Incumbent re-elected. | ▌Y Malcolm C. Tarver (Democratic) 86.4% ▌Lewis H. Crawford (Republican) 13.6% ▌Norman Thomas (Independent) 0.005% |
| Georgia 8 | Florence Reville Gibbs | Democratic | 1940 | Incumbent retired. Democratic hold. | ▌Y John S. Gibson (Democratic) Uncontested |
| Georgia 9 | B. Frank Whelchel | Democratic | 1934 | Incumbent re-elected. | ▌Y B. Frank Whelchel (Democratic) 84.4% ▌William C. Horton (Republican) 15.4% ▌W. H. Slack Jr. (Independent) 0.2% |
| Georgia 10 | Paul Brown | Democratic | 1933 (special) | Incumbent re-elected. | ▌Y Paul Brown (Democratic) 98.7% ▌D. Talmadge Bowers (Independent) 1.3% ▌G. P. King (Independent) 0.01% |

## Idaho

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Idaho 1 | Compton I. White | Democratic | 1932 | Incumbent re-elected. | ▌Y Compton I. White (Democratic) 62.0% ▌Edward Gaffney (Republican) 38.0% |
| Idaho 2 | Henry Dworshak | Republican | 1938 | Incumbent re-elected. | ▌Y Henry Dworshak (Republican) 53.1% ▌Ira H. Masters (Democratic) 46.9% |

## Illinois

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Illinois 1 | Arthur Wergs Mitchell | Democratic | 1934 | Incumbent re-elected. | ▌Y Arthur Wergs Mitchell (Democratic) 52.7% ▌William E. King (Republican) 46.7% |
| Illinois 2 | Raymond S. McKeough | Democratic | 1934 | Incumbent re-elected. | ▌Y Raymond S. McKeough (Democratic) 51.4% ▌P. H. Moynihan (Republican) 48.6% |
| Illinois 3 | Edward A. Kelly | Democratic | 1930 | Incumbent re-elected. | ▌Y Edward A. Kelly (Democratic) 51.1% ▌Waldemar J. Roehler (Republican) 48.9% |
| Illinois 4 | Harry P. Beam | Democratic | 1930 | Incumbent re-elected. | ▌Y Harry P. Beam (Democratic) 77.4% ▌Henry F. Schmudde (Republican) 22.6% |
| Illinois 5 | Adolph J. Sabath | Democratic | 1906 | Incumbent re-elected. | ▌Y Adolph J. Sabath (Democratic) 71.0% ▌Martin Dykema (Republican) 29.0% |
| Illinois 6 | A. F. Maciejewski | Democratic | 1938 | Incumbent re-elected. | ▌Y A. F. Maciejewski (Democratic) 56.2% ▌Joseph Wagner (Republican) 43.8% |
| Illinois 7 | Leonard W. Schuetz | Democratic | 1930 | Incumbent re-elected. | ▌Y Leonard W. Schuetz (Democratic) 50.9% ▌James G. Moreland (Republican) 49.1% |
| Illinois 8 | Leo Kocialkowski | Democratic | 1932 | Incumbent re-elected. | ▌Y Leo Kocialkowski (Democratic) 78.1% ▌Anthony V. Champagne (Republican) 21.9% |
| Illinois 9 | James McAndrews | Democratic | 1934 | Incumbent lost re-election. Republican gain. | ▌Y Charles S. Dewey (Republican) 53.3% ▌James McAndrews (Democratic) 46.7% |
| Illinois 10 | Ralph E. Church | Republican | 1934 | Incumbent retired to run for U.S. senator. Republican hold. | ▌Y George A. Paddock (Republican) 61.3% ▌John Haderlein (Democratic) 38.7% |
| Illinois 11 | Chauncey W. Reed | Republican | 1934 | Incumbent re-elected. | ▌Y Chauncey W. Reed (Republican) 64.6% ▌Edgar O. Eakin (Democratic) 35.4% |
| Illinois 12 | Noah M. Mason | Republican | 1936 | Incumbent re-elected. | ▌Y Noah M. Mason (Republican) 60.6% ▌August C. Engh (Democratic) 39.4% |
| Illinois 13 | Leo E. Allen | Republican | 1932 | Incumbent re-elected. | ▌Y Leo E. Allen (Republican) 67.6% ▌John B. Hayes (Democratic) 32.4% |
| Illinois 14 | Anton J. Johnson | Republican | 1938 | Incumbent re-elected. | ▌Y Anton J. Johnson (Republican) 52.3% ▌Forest Dizotell (Democratic) 47.7% |
| Illinois 15 | Robert B. Chiperfield | Republican | 1938 | Incumbent re-elected. | ▌Y Robert B. Chiperfield (Republican) 56.4% ▌Russell M. Gunn (Democratic) 43.6% |
| Illinois 16 | Everett Dirksen | Republican | 1932 | Incumbent re-elected. | ▌Y Everett Dirksen (Republican) 58.1% ▌M. R. Clark (Democratic) 41.9% |
| Illinois 17 | Leslie C. Arends | Republican | 1934 | Incumbent re-elected. | ▌Y Leslie C. Arends (Republican) 61.1% ▌J. Joseph Pitts (Democratic) 38.9% |
| Illinois 18 | Jessie Sumner | Republican | 1938 | Incumbent re-elected. | ▌Y Jessie Sumner (Republican) 53.2% ▌James A. Meeks (Democratic) 46.8% |
| Illinois 19 | William H. Wheat | Republican | 1938 | Incumbent re-elected. | ▌Y William H. Wheat (Republican) 50.6% ▌Alfred D. Huston (Democratic) 49.4% |
| Illinois 20 | James M. Barnes | Democratic | 1938 | Incumbent re-elected. | ▌Y James M. Barnes (Democratic) 51.7% ▌Hardin E. Hanks (Republican) 48.3% |
| Illinois 21 | Frank W. Fries | Democratic | 1936 | Incumbent lost re-election. Republican gain. | ▌Y George Evan Howell (Republican) 51.6% ▌Frank W. Fries (Democratic) 48.4% |
| Illinois 22 | Edwin M. Schaefer | Democratic | 1932 | Incumbent re-elected. | ▌Y Edwin M. Schaefer (Democratic) 53.8% ▌Calvin D. Johnson (Republican) 46.2% |
| Illinois 23 | Laurence F. Arnold | Democratic | 1936 | Incumbent re-elected. | ▌Y Laurence F. Arnold (Democratic) 51.0% ▌Ben O. Sumner (Republican) 49.0% |
| Illinois 24 | Claude V. Parsons | Democratic | 1930 | Incumbent lost re-election. Republican gain. | ▌Y James V. Heidinger (Republican) 53.6% ▌Claude V. Parsons (Democratic) 46.4% |
| Illinois 25 | Kent E. Keller | Democratic | 1930 | Incumbent lost re-election. Republican gain. | ▌Y C. W. Bishop (Republican) 50.5% ▌Kent E. Keller (Democratic) 49.5% |
| Illinois at-large | John C. Martin | Democratic | 1938 | Incumbent retired. Republican gain. | ▌Y William Stratton (Republican) 25.7% ▌Y Stephen A. Day (Republican) 25.3% ▌Thomas Vernor Smith (Democratic) 24.7% ▌Walter J. Orlikoski (Democratic) 24.0% ▌Harry Fleischman (Independent) 0.09% ▌Lee S. Gregory (Independent) 0.09% ▌Willis Ray Wilson (Independent) 0.09% ▌Lena Duell Vincent (Independent) 0.08% |
| Illinois at-large | Thomas Vernor Smith | Democratic | 1938 | Incumbent lost re-election. Republican gain. | ▌Y William Stratton (Republican) 25.7% ▌Y Stephen A. Day (Republican) 25.3% ▌Thomas Vernor Smith (Democratic) 24.7% ▌Walter J. Orlikoski (Democratic) 24.0% ▌Harry Fleischman (Independent) 0.09% ▌Lee S. Gregory (Independent) 0.09% ▌Willis Ray Wilson (Independent) 0.09% ▌Lena Duell Vincent (Independent) 0.08% |

## Indiana

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Indiana 1 | William T. Schulte | Democratic | 1932 | Incumbent re-elected. | ▌Y William T. Schulte (Democratic) 60.9% ▌M. Elliott Belshaw (Republican) 39.1% |
| Indiana 2 | Charles A. Halleck | Republican | 1935 (special) | Incumbent re-elected. | ▌Y Charles A. Halleck (Republican) 58.1% ▌James O. Cox (Democratic) 41.9% |
| Indiana 3 | Robert A. Grant | Republican | 1938 | Incumbent re-elected. | ▌Y Robert A. Grant (Republican) 51.3% ▌George Sands (Democratic) 48.7% |
| Indiana 4 | George W. Gillie | Republican | 1938 | Incumbent re-elected. | ▌Y George W. Gillie (Republican) 58.0% ▌Frank E. Corbett (Democratic) 42.0% |
| Indiana 5 | Forest Harness | Republican | 1938 | Incumbent re-elected. | ▌Y Forest Harness (Republican) 54.7% ▌George W. Wolf (Democratic) 45.3% |
| Indiana 6 | Noble J. Johnson | Republican | 1938 | Incumbent re-elected. | ▌Y Noble J. Johnson (Republican) 52.3% ▌Lenhardt E. Bauer (Democratic) 47.7% |
| Indiana 7 | Gerald W. Landis | Republican | 1938 | Incumbent re-elected. | ▌Y Gerald W. Landis (Republican) 52.2% ▌Charles H. Bedwell (Democratic) 47.8% |
| Indiana 8 | John W. Boehne Jr. | Democratic | 1930 | Incumbent re-elected. | ▌Y John W. Boehne Jr. (Democratic) 55.5% ▌Charles F. Werner (Republican) 44.5% |
| Indiana 9 | Eugene B. Crowe | Democratic | 1930 | Incumbent lost re-election. Republican gain. | ▌Y Earl Wilson (Republican) 50.9% ▌Eugene B. Crowe (Democratic) 49.1% |
| Indiana 10 | Raymond S. Springer | Republican | 1938 | Incumbent re-elected. | ▌Y Raymond S. Springer (Republican) 53.0% ▌Don C. Ward (Democratic) 47.0% |
| Indiana 11 | William Larrabee | Democratic | 1930 | Incumbent re-elected. | ▌Y William Larrabee (Democratic) 51.7% ▌Maurice G. Robinson (Republican) 48.3% |
| Indiana 12 | Louis Ludlow | Democratic | 1928 | Incumbent re-elected. | ▌Y Louis Ludlow (Democratic) 52.9% ▌James A. Collins (Republican) 47.1% |

## Iowa

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Iowa 1 | Thomas E. Martin | Republican | 1938 | Incumbent re-elected. | ▌Y Thomas E. Martin (Republican) 60.4% ▌Zoe S. Nabers (Democratic) 39.6% |
| Iowa 2 | William S. Jacobsen | Democratic | 1936 | Incumbent re-elected. | ▌Y William S. Jacobsen (Democratic) 52.2% ▌W. A. McCullough (Republican) 47.8% |
| Iowa 3 | John W. Gwynne | Republican | 1934 | Incumbent re-elected. | ▌Y John W. Gwynne (Republican) 59.9% ▌Ernest J. Seeman (Democratic) 40.1% |
| Iowa 4 | Henry O. Talle | Republican | 1938 | Incumbent re-elected. | ▌Y Henry O. Talle (Republican) 56.4% ▌Morgan J. McEnaney (Democratic) 43.6% |
| Iowa 5 | Karl M. LeCompte | Republican | 1938 | Incumbent re-elected. | ▌Y Karl M. LeCompte (Republican) 53.3% ▌Roy E. Stevens (Democratic) 46.7% |
| Iowa 6 | Robert K. Goodwin | Republican | 1940 (special) | Incumbent retired. Republican hold. | ▌Y Paul Cunningham (Republican) 52.3% ▌E. Frank Fox (Democratic) 47.6% ▌D. Robinson (Prohibition) 0.2% |
| Iowa 7 | Ben F. Jensen | Republican | 1938 | Incumbent re-elected. | ▌Y Ben F. Jensen (Republican) 58.6% ▌Ernest M. Miller (Democratic) 41.4% |
| Iowa 8 | Fred C. Gilchrist | Republican | 1930 | Incumbent re-elected. | ▌Y Fred C. Gilchrist (Republican) 58.1% ▌Frank J. Lund (Democratic) 41.9% |
| Iowa 9 | Vincent F. Harrington | Democratic | 1936 | Incumbent re-elected. | ▌Y Vincent F. Harrington (Democratic) 50.8% ▌Albert F. Swanson (Republican) 49.2% |

## Kansas

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Kansas 1 | William P. Lambertson | Republican | 1928 | Incumbent re-elected. | ▌Y William P. Lambertson (Republican) 61.0% ▌Clive R. Lane (Democratic) 39.0% |
| Kansas 2 | Ulysses Samuel Guyer | Republican | 1926 | Incumbent re-elected. | ▌Y Ulysses Samuel Guyer (Republican) 54.0% ▌Harold H. Harding (Democratic) 46.0% |
| Kansas 3 | Thomas Daniel Winter | Republican | 1938 | Incumbent re-elected. | ▌Y Thomas Daniel Winter (Republican) 55.2% ▌W. E. Ledbetter (Democratic) 44.8% |
| Kansas 4 | Edward Herbert Rees | Republican | 1936 | Incumbent re-elected. | ▌Y Edward Herbert Rees (Republican) 62.5% ▌Dudley Doolittle (Democratic) 37.5% |
| Kansas 5 | John Mills Houston | Democratic | 1934 | Incumbent re-elected. | ▌Y John Mills Houston (Democratic) 52.5% ▌Stanley Taylor (Republican) 47.5% |
| Kansas 6 | Frank Carlson | Republican | 1934 | Incumbent re-elected. | ▌Y Frank Carlson (Republican) 60.9% ▌Max Jones (Democratic) 39.1% |
| Kansas 7 | Clifford R. Hope | Republican | 1926 | Incumbent re-elected. | ▌Y Clifford R. Hope (Republican) 63.9% ▌Claude E. Main (Democratic) 36.1% |

## Kentucky

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Kentucky 1 | Noble Jones Gregory | Democratic | 1936 | Incumbent re-elected. | ▌Y Noble Jones Gregory (Democratic) Uncontested |
| Kentucky 2 | Beverly M. Vincent | Democratic | 1937 (special) | Incumbent re-elected. | ▌Y Beverly M. Vincent (Democratic) Uncontested |
| Kentucky 3 | Emmet O'Neal | Democratic | 1934 | Incumbent re-elected. | ▌Y Emmet O'Neal (Democratic) 60.0% ▌Ben J. Brumleve (Republican) 40.0% |
| Kentucky 4 | Edward W. Creal | Democratic | 1935 (special) | Incumbent re-elected. | ▌Y Edward W. Creal (Democratic) 58.5% ▌Lewis H. Mather (Republican) 41.5% |
| Kentucky 5 | Brent Spence | Democratic | 1930 | Incumbent re-elected. | ▌Y Brent Spence (Democratic) 61.2% ▌Henry J. Cook (Republican) 38.8% |
| Kentucky 6 | Virgil Chapman | Democratic | 1930 | Incumbent re-elected. | ▌Y Virgil Chapman (Democratic) 60.5% ▌William D. Rogers (Republican) 39.5% |
| Kentucky 7 | Andrew J. May | Democratic | 1930 | Incumbent re-elected. | ▌Y Andrew J. May (Democratic) 56.8% ▌James W. Turner (Republican) 43.2% |
| Kentucky 8 | Joe B. Bates | Democratic | 1930 | Incumbent re-elected. | ▌Y Joe B. Bates (Democratic) 58.0% ▌H. Clell Hayes (Republican) 42.0% |
| Kentucky 9 | John M. Robsion | Republican | 1934 | Incumbent re-elected. | ▌Y John M. Robsion (Republican) 61.7% ▌Bert Rowland (Democratic) 38.3% |

## Louisiana

Several close allies of former governor Huey Long were defeated in primaries by reform candidates.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Louisiana 1 | Joachim O. Fernández | Democratic | 1930 | Incumbent lost renomination. Democratic hold. | ▌Y F. Edward Hébert (Democratic) Uncontested |
| Louisiana 2 | Paul H. Maloney | Democratic | 1930 | Incumbent lost renomination. Democratic hold. | ▌Y Hale Boggs (Democratic) Uncontested |
| Louisiana 3 | Robert L. Mouton | Democratic | 1936 | Incumbent lost renomination. Democratic hold. | ▌Y James R. Domengeaux (Democratic) 66.0% ▌David W. Pipes Jr. (Republican) 34.0% |
| Louisiana 4 | Overton Brooks | Democratic | 1936 | Incumbent re-elected. | ▌Y Overton Brooks (Democratic) 99.97% ▌Benjamin E. Neal (Independent) 0.03% |
| Louisiana 5 | Newt V. Mills | Democratic | 1936 | Incumbent re-elected. | ▌Y Newt V. Mills (Democratic) Uncontested |
| Louisiana 6 | John K. Griffith | Democratic | 1936 | Incumbent lost renomination. Democratic hold. | ▌Y Jared Y. Sanders Jr. (Democratic) Uncontested |
| Louisiana 7 | René L. De Rouen | Democratic | 1927 | Incumbent retired. Democratic hold. | ▌Y Vance Plauché (Democratic) Uncontested |
| Louisiana 8 | A. Leonard Allen | Democratic | 1936 | Incumbent re-elected. | ▌Y A. Leonard Allen (Democratic) Uncontested |

## Maine

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Maine 1 | James C. Oliver | Republican | 1936 | Incumbent re-elected. | ▌Y James C. Oliver (Republican) 63.4% ▌Peter M. MacDonald (Democratic) 36.6% |
| Maine 2 | Margaret Chase Smith | Republican | 1940 | Incumbent re-elected. | ▌Y Margaret Chase Smith (Republican) 64.6% ▌Edward J. Beauchamp (Democratic) 35.4% |
| Maine 3 | Owen Brewster | Republican | 1934 | Incumbent retired to run for U.S. senator. Republican hold. | ▌Y Frank Fellows (Republican) 66.1% ▌Thomas N. Curran (Democratic) 33.9% |

## Maryland

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Maryland 1 | David Jenkins Ward | Democratic | 1939 (special) | Incumbent re-elected. | ▌Y David Jenkins Ward (Democratic) 53.9% ▌Robert F. Duer (Republican) 46.1% ▌Thomas F. Johnson (Independent) 0.006% |
| Maryland 2 | William P. Cole Jr. | Democratic | 1930 | Incumbent re-elected. | ▌Y William P. Cole Jr. (Democratic) 65.7% ▌Theodore F. Brown (Republican) 34.3% |
| Maryland 3 | Thomas D'Alesandro Jr. | Democratic | 1938 | Incumbent re-elected. | ▌Y Thomas D'Alesandro Jr. (Democratic) 61.5% ▌John A. Janetzke Jr. (Republican) 38.5% |
| Maryland 4 | Ambrose Jerome Kennedy | Democratic | 1932 | Incumbent lost renomination. Democratic hold. | ▌Y John Ambrose Meyer (Democratic) 56.6% ▌Daniel Ellison (Republican) 43.4% |
| Maryland 5 | Lansdale Sasscer | Democratic | 1939 (special) | Incumbent re-elected. | ▌Y Lansdale Sasscer (Democratic) 71.0% ▌John N. Torvestad (Republican) 29.0% ▌George Brown (Independent) 0.001% |
| Maryland 6 | William D. Byron | Democratic | 1938 | Incumbent re-elected. | ▌Y William D. Byron (Democratic) 53.5% ▌Walter Johnson (Republican) 46.5% ▌Charles P. Stewart (Independent) 0.001% |

## Massachusetts

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Massachusetts 1 | Allen T. Treadway | Republican | 1912 | Incumbent re-elected. | ▌Y Allen T. Treadway (Republican) 57.1% ▌Clifford J. Akey (Democratic) 42.9% |
| Massachusetts 2 | Charles R. Clason | Republican | 1936 | Incumbent re-elected. | ▌Y Charles R. Clason (Republican) 58.4% ▌Patrick A. Doyle (Democratic) 41.6% |
| Massachusetts 3 | Joseph E. Casey | Democratic | 1934 | Incumbent re-elected. | ▌Y Joseph E. Casey (Democratic) 54.6% ▌Edward T. Simoneau (Republican) 45.4% |
| Massachusetts 4 | Pehr G. Holmes | Republican | 1930 | Incumbent re-elected. | ▌Y Pehr G. Holmes (Republican) 53.2% ▌Frank J. McGrail (Democratic) 46.0% ▌Helen P. Nylen (Prohibition) 0.9% |
| Massachusetts 5 | Edith Nourse Rogers | Republican | 1925 | Incumbent re-elected. | ▌Y Edith Nourse Rogers (Republican) 76.2% ▌Francis J. Roane (Democratic) 23.8% |
| Massachusetts 6 | George J. Bates | Republican | 1936 | Incumbent re-elected. | ▌Y George J. Bates (Republican) 71.6% ▌James D. Burns (Democratic) 28.4% |
| Massachusetts 7 | Lawrence J. Connery | Democratic | 1937 (special) | Incumbent re-elected. | ▌Y Lawrence J. Connery (Democratic) 62.1% ▌William Henry Haskell (Republican) 36.4% ▌Thaxter Eaton (Prohibition) 1.5% |
| Massachusetts 8 | Arthur D. Healey | Democratic | 1932 | Incumbent re-elected. | ▌Y Arthur D. Healey (Democratic) 55.4% ▌John J. Irwin (Republican) 44.6% |
| Massachusetts 9 | Robert Luce | Republican | 1936 | Incumbent lost re-election. Democratic gain. | ▌Y Thomas H. Eliot (Democratic) 52.1% ▌Robert Luce (Republican) 47.9% |
| Massachusetts 10 | George H. Tinkham | Republican | 1914 | Incumbent re-elected. | ▌Y George H. Tinkham (Republican) 59.1% ▌David M. Owens (Democratic) 40.9% |
| Massachusetts 11 | Thomas A. Flaherty | Democratic | 1937 (special) | Incumbent re-elected. | ▌Y Thomas A. Flaherty (Democratic) 83.8% ▌Benjamin J. Green (Republican) 16.2% |
| Massachusetts 12 | John W. McCormack | Democratic | 1928 | Incumbent re-elected. | ▌Y John W. McCormack (Democratic) 78.1% ▌Henry J. Allen (Republican) 21.9% |
| Massachusetts 13 | Richard B. Wigglesworth | Republican | 1928 | Incumbent re-elected. | ▌Y Richard B. Wigglesworth (Republican) 65.0% ▌Francis G. O'Neill (Democratic) 34.1% ▌Freeman Putney Jr. (Prohibition) 0.8% |
| Massachusetts 14 | Joseph W. Martin Jr. | Republican | 1924 | Incumbent re-elected. | ▌Y Joseph W. Martin Jr. (Republican) 54.4% ▌Harold E. Cole (Democratic) 45.6% |
| Massachusetts 15 | Charles L. Gifford | Republican | 1922 | Incumbent re-elected. | ▌Y Charles L. Gifford (Republican) 57.8% ▌George F. Backus (Democratic) 42.2% |

## Michigan

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Michigan 1 | Rudolph G. Tenerowicz | Democratic | 1938 | Incumbent re-elected. | ▌Y Rudolph G. Tenerowicz (Democratic) 79.9% ▌Donald J. Marshall (Republican) 19.5% ▌Thomas X. Dombrowski (Communist) 0.4% ▌Stanley Wincek (Socialist) 0.3% |
| Michigan 2 | Earl C. Michener | Republican | 1934 | Incumbent re-elected. | ▌Y Earl C. Michener (Republican) 62.3% ▌Redmond M. Burr (Democratic) 37.7% ▌Walter S. Haynes (Prohibition) 0.05% |
| Michigan 3 | Paul W. Shafer | Republican | 1936 | Incumbent re-elected. | ▌Y Paul W. Shafer (Republican) 62.1% ▌Charles T. McSherry (Democratic) 37.6% ▌Carson McDaniels (Socialist) 0.2% ▌Oliver O. Pickard (Prohibition) 0.1% |
| Michigan 4 | Clare Hoffman | Republican | 1934 | Incumbent re-elected. | ▌Y Clare Hoffman (Republican) 61.8% ▌Harvey Hope Jarvis (Democratic) 38.1% ▌Sarah Bishop (Prohibition) 0.08% |
| Michigan 5 | Bartel J. Jonkman | Republican | 1940 (special) | Incumbent re-elected. | ▌Y Bartel J. Jonkman (Republican) 53.7% ▌Garrett Heyns (Democratic) 46.3% |
| Michigan 6 | William W. Blackney | Republican | 1938 | Incumbent re-elected. | ▌Y William W. Blackney (Republican) 51.1% ▌Charles R. Adair (Democratic) 48.6% ▌Harry F. Griffin (Socialist) 0.2% ▌Royal S. Woodhead (Prohibition) 0.07% |
| Michigan 7 | Jesse P. Wolcott | Republican | 1930 | Incumbent re-elected. | ▌Y Jesse P. Wolcott (Republican) 65.2% ▌Albert A. Wagner (Democratic) 34.8% ▌Edward Voller (Prohibition) 0.06% |
| Michigan 8 | Fred L. Crawford | Republican | 1934 | Incumbent re-elected. | ▌Y Fred L. Crawford (Republican) 61.2% ▌Louis C. Schwinger (Democratic) 38.8% ▌Holgar Larson (Prohibition) 0.06% |
| Michigan 9 | Albert J. Engel | Republican | 1934 | Incumbent re-elected. | ▌Y Albert J. Engel (Republican) 56.8% ▌Noel P. Fox (Democratic) 43.1% ▌William H. Boileau (Prohibition) 0.07% |
| Michigan 10 | Roy O. Woodruff | Republican | 1920 | Incumbent re-elected. | ▌Y Roy O. Woodruff (Republican) 61.9% ▌William J. Kelly (Democratic) 37.9% ▌F. A. Halsted (Socialist) 0.10% ▌Gustav W. Malm (Prohibition) 0.06% |
| Michigan 11 | Frederick Van Ness Bradley | Republican | 1938 | Incumbent re-elected. | ▌Y Frederick Van Ness Bradley (Republican) 51.1% ▌Wendell L. Lund (Democratic) 48.7% ▌Raymond Anderson (Communist) 0.09% ▌S. Basil Dickinson (Prohibition) 0.05% |
| Michigan 12 | Frank Eugene Hook | Democratic | 1934 | Incumbent re-elected. | ▌Y Frank Eugene Hook (Democratic) 51.3% ▌John B. Bennett (Republican) 48.4% ▌Arvid N. Phillips (Communist) 0.4% |
| Michigan 13 | Clarence J. McLeod | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y George D. O'Brien (Democratic) 54.6% ▌Clarence J. McLeod (Republican) 44.9% ▌William Jenkins (Socialist) 0.3% ▌Huge Beiswenger (Communist) 0.2% |
| Michigan 14 | Louis C. Rabaut | Democratic | 1934 | Incumbent re-elected. | ▌Y Louis C. Rabaut (Democratic) 59.0% ▌George B. Schaeffer (Republican) 41.0% |
| Michigan 15 | John Dingell Sr. | Democratic | 1932 | Incumbent re-elected. | ▌Y John Dingell Sr. (Democratic) 61.9% ▌Archie C. Fraser (Republican) 37.9% ▌Woodrow Ingram (Socialist) 0.3% |
| Michigan 16 | John Lesinski Sr. | Democratic | 1932 | Incumbent re-elected. | ▌Y John Lesinski Sr. (Democratic) 58.8% ▌Robert Ford (Republican) 40.8% ▌Mint Nauta (Socialist) 0.3% ▌Nat Wald (Communist) 0.2% |
| Michigan 17 | George Anthony Dondero | Republican | 1932 | Incumbent re-elected. | ▌Y George Anthony Dondero (Republican) 54.7% ▌Draper Allen (Democratic) 45.1% ▌Walter Allmendiger (Socialist) 0.2% |

## Minnesota

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Minnesota 1 | August H. Andresen | Republican | 1934 | Incumbent re-elected. | ▌Y August H. Andresen (Republican) 64.8% ▌Francis L. Murphy (Democratic) 20.1% ▌Endre B. Anderson (Farmer–Labor) 15.1% |
| Minnesota 2 | Elmer Ryan | Democratic | 1934 | Incumbent lost re-election. Republican gain. | ▌Y Joseph P. O'Hara (Republican) 49.0% ▌Elmer Ryan (Democratic) 42.5% ▌C. E. McNaught (Farmer–Labor) 8.5% |
| Minnesota 3 | John G. Alexander | Republican | 1938 | Incumbent lost renomination. Republican hold. | ▌Y Richard P. Gale (Republican) 43.5% ▌Henry Teigan (Farmer–Labor) 34.2% ▌Martin A. Hogan (Democratic) 19.3% ▌John G. Alexander (Independent) 3.1% |
| Minnesota 4 | Melvin Maas | Republican | 1934 | Incumbent re-elected. | ▌Y Melvin Maas (Republican) 58.8% ▌George L. Siegel (Farmer–Labor) 28.2% ▌Willard J. Moran (Democratic) 12.9% |
| Minnesota 5 | Oscar Youngdahl | Republican | 1938 | Incumbent re-elected. | ▌Y Oscar Youngdahl (Republican) 52.1% ▌Dewey Johnson (Farmer–Labor) 34.3% ▌LaMoine Montgomery Dowling (Democratic) 13.6% |
| Minnesota 6 | Harold Knutson | Republican | 1934 | Incumbent re-elected. | ▌Y Harold Knutson (Republican) 61.5% ▌E. Thomas O'Briesn (Democratic) 38.5% |
| Minnesota 7 | Herman Carl Andersen | Republican | 1938 | Incumbent re-elected. | ▌Y Herman Carl Andersen (Republican) 50.7% ▌Harold L. Peterson (Farmer–Labor) 32.6% ▌J. L. O'Connor (Democratic) 16.8% |
| Minnesota 8 | William Alvin Pittenger | Republican | 1938 | Incumbent re-elected. | ▌Y William Alvin Pittenger (Republican) 54.2% ▌John Bernard (Farmer–Labor) 28.5% ▌M. W. Raihala (Democratic) 17.3% |
| Minnesota 9 | Rich T. Buckler | Farmer–Labor | 1934 | Incumbent re-elected. | ▌Y Rich T. Buckler (Farmer–Labor) 43.4% ▌Colvin G. Butler (Republican) 42.8% ▌Frank H. Timm (Democratic) 13.7% |

## Mississippi

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Mississippi 1 | John E. Rankin | Democratic | 1920 | Incumbent re-elected. | ▌Y John E. Rankin (Democratic) Uncontested |
| Mississippi 2 | Wall Doxey | Democratic | 1928 | Incumbent re-elected. | ▌Y Wall Doxey (Democratic) Uncontested |
| Mississippi 3 | William Madison Whittington | Democratic | 1924 | Incumbent re-elected. | ▌Y William Madison Whittington (Democratic) Uncontested |
| Mississippi 4 | Aaron L. Ford | Democratic | 1934 | Incumbent re-elected. | ▌Y Aaron L. Ford (Democratic) Uncontested |
| Mississippi 5 | Ross A. Collins | Democratic | 1936 | Incumbent re-elected. | ▌Y Ross A. Collins (Democratic) Uncontested |
| Mississippi 6 | William M. Colmer | Democratic | 1932 | Incumbent re-elected. | ▌Y William M. Colmer (Democratic) Uncontested |
| Mississippi 7 | Dan R. McGehee | Democratic | 1934 | Incumbent re-elected. | ▌Y Dan R. McGehee (Democratic) Uncontested |

## Missouri

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Missouri 1 | Milton A. Romjue | Democratic | 1922 | Incumbent re-elected. | ▌Y Milton A. Romjue (Democratic) 50.5% ▌Henry S. Beardsley (Republican) 49.5% |
| Missouri 2 | William L. Nelson | Democratic | 1934 | Incumbent re-elected. | ▌Y William L. Nelson (Democratic) 53.8% ▌Roy O. Miller (Republican) 46.2% ▌Fred Umstead (Socialist Labor) 0.003% |
| Missouri 3 | Richard M. Duncan | Democratic | 1932 | Incumbent re-elected. | ▌Y Richard M. Duncan (Democratic) 53.3% ▌Fred Maughmer (Republican) 46.7% |
| Missouri 4 | C. Jasper Bell | Democratic | 1934 | Incumbent re-elected. | ▌Y C. Jasper Bell (Democratic) 60.0% ▌John W. Mitchell (Republican) 40.0% ▌William Henke (Socialist Labor) 0.01% |
| Missouri 5 | Joe Shannon | Democratic | 1930 | Incumbent re-elected. | ▌Y Joe Shannon (Democratic) 54.2% ▌Forest W. Hanna (Republican) 45.8% ▌Karl Oberheu (Socialist Labor) 0.02% |
| Missouri 6 | Reuben T. Wood | Democratic | 1932 | Incumbent lost re-election. Republican gain. | ▌Y Philip A. Bennett (Republican) 53.7% ▌Reuben T. Wood (Democratic) 46.3% |
| Missouri 7 | Dewey Jackson Short | Republican | 1934 | Incumbent re-elected. | ▌Y Dewey Jackson Short (Republican) 59.3% ▌Vernon Sigars (Democratic) 40.7% |
| Missouri 8 | Clyde Williams | Democratic | 1930 | Incumbent re-elected. | ▌Y Clyde Williams (Democratic) 51.1% ▌Parke M. Banta (Republican) 48.9% ▌William Doyen (Socialist Labor) 0.002% |
| Missouri 9 | Clarence Cannon | Democratic | 1922 | Incumbent re-elected. | ▌Y Clarence Cannon (Democratic) 55.3% ▌F. B. Meyer (Republican) 44.7% |
| Missouri 10 | Orville Zimmerman | Democratic | 1934 | Incumbent re-elected. | ▌Y Orville Zimmerman (Democratic) 57.4% ▌C. E. Davenport (Republican) 42.6% |
| Missouri 11 | Thomas C. Hennings Jr. | Democratic | 1934 | Incumbent resigned. Democratic hold. | ▌Y John B. Sullivan (Democratic) 55.7% ▌Charles J. Riley (Republican) 44.3% ▌James Wagoner (Socialist Labor) 0.01% |
| Missouri 12 | Charles Arthur Anderson | Democratic | 1936 | Incumbent lost re-election. Republican gain. | ▌Y Walter C. Ploeser (Republican) 53.9% ▌Charles Arthur Anderson (Democratic) 46.1% ▌Peter Tendler (Socialist Labor) 0.03% |
| Missouri 13 | John J. Cochran | Democratic | 1926 | Incumbent re-elected. | ▌Y John J. Cochran (Democratic) 64.5% ▌W. S. Sanford (Republican) 35.4% ▌Norman Kochendorfer (Socialist Labor) 0.01% |

## Montana

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Montana 1 | Jacob Thorkelson | Republican | 1938 | Incumbent lost renomination. Republican hold. | ▌Y Jeannette Rankin (Republican) 54.5% ▌Jerry J. O'Connell (Democratic) 45.5% |
| Montana 2 | James F. O'Connor | Democratic | 1936 | Incumbent re-elected. | ▌Y James F. O'Connor (Democratic) 62.0% ▌Melvin N. Hoiness (Republican) 37.1% ▌Leverne Hamilton (Socialist) 0.9% |

## Nebraska

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Nebraska 1 | John Hyde Sweet | Republican | 1940 | Incumbent retired. Republican hold. | ▌Y Oren S. Copeland (Republican) 55.6% ▌Henry Carl Luckey (Democratic) 44.4% |
| Nebraska 2 | Charles F. McLaughlin | Democratic | 1934 | Incumbent re-elected. | ▌Y Charles F. McLaughlin (Democratic) 56.6% ▌Theodore W. Metcalf (Republican) 43.4% |
| Nebraska 3 | Karl Stefan | Republican | 1934 | Incumbent re-elected. | ▌Y Karl Stefan (Republican) 79.9% ▌Victor J. McGonigle (Democratic) 17.0% ▌Paul Burke (Independent) 3.1% |
| Nebraska 4 | Carl Curtis | Republican | 1938 | Incumbent re-elected. | ▌Y Carl Curtis (Republican) 57.7% ▌R. O. Canaday (Democratic) 25.2% ▌Charles Gustav Binderup (Independent) 17.1% |
| Nebraska 5 | Harry B. Coffee | Democratic | 1934 | Incumbent re-elected. | ▌Y Harry B. Coffee (Democratic) 58.0% ▌Bert Howard (Republican) 42.0% |

## Nevada

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Nevada at-large | James G. Scrugham | Democratic | 1932 | Incumbent re-elected. | ▌Y James G. Scrugham (Democratic) 64.5% ▌Ralph W. Lattin (Republican) 35.5% |

## New Hampshire

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| New Hampshire 1 | Arthur B. Jenks | Republican | 1938 | Incumbent re-elected. | ▌Y Arthur B. Jenks (Republican) 51.1% ▌Alphonse Roy (Democratic) 48.9% |
| New Hampshire 2 | Foster Waterman Stearns | Republican | 1938 | Incumbent re-elected. | ▌Y Foster Waterman Stearns (Republican) 53.0% ▌Daniel J. Moriarty (Democratic) 47.0% |

## New Jersey

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| New Jersey 1 | Charles A. Wolverton | Republican | 1926 | Incumbent re-elected. | ▌Y Charles A. Wolverton (Republican) 55.5% ▌Harry Roye (Democratic) 44.3% ▌Andrew S. Hall (Socialist) 0.1% ▌Esther H. Elfreth (Prohibition) 0.06% ▌John F. Norman (Communist) 0.04% |
| New Jersey 2 | Walter S. Jeffries | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Elmer H. Wene (Democratic) 52.1% ▌Walter S. Jeffries (Republican) 47.8% ▌Joseph B. Sharp (Prohibition) 0.03% |
| New Jersey 3 | William H. Sutphin | Democratic | 1930 | Incumbent re-elected. | ▌Y William H. Sutphin (Democratic) 51.7% ▌Joseph C. Irwin (Republican) 48.2% ▌Horace T. Brown (Prohibition) 0.02% |
| New Jersey 4 | D. Lane Powers | Republican | 1932 | Incumbent re-elected. | ▌Y D. Lane Powers (Republican) 55.9% ▌Thomas S. Dignan (Democratic) 44.0% ▌William C. Kauffman (Socialist) 0.05% ▌Gus Napoleon (Ind. Progressive) 0.03% ▌Wilbur Jones (Prohibition) 0.02% |
| New Jersey 5 | Charles A. Eaton | Republican | 1924 | Incumbent re-elected. | ▌Y Charles A. Eaton (Republican) 55.9% ▌Charles R. M. Tuttle (Democratic) 44.0% ▌Emily R. G. Klein (Prohibition) 0.03% |
| New Jersey 6 | Donald H. McLean | Republican | 1932 | Incumbent re-elected. | ▌Y Donald H. McLean (Republican) 54.9% ▌James E. Downes (Democratic) 44.1% ▌Margaret Cameron Lowe (Prohibition) 0.6% ▌Henry Allen (Communist) 0.2% ▌Samuel Geneslaw (Socialist) 0.1% |
| New Jersey 7 | J. Parnell Thomas | Republican | 1936 | Incumbent re-elected. | ▌Y J. Parnell Thomas (Republican) 64.6% ▌Mort L. O'Connell (Democratic) 35.0% ▌Frank A. Buono (Independent) 0.3% ▌Robert M. Nitsche (Liberal Ind.) 0.05% ▌H. E. Garrison (Prohibition) 0.03% |
| New Jersey 8 | George N. Seger | Republican | 1922 | Incumbent died August 26, 1940. Republican hold. | ▌Y Gordon Canfield (Republican) 58.6% ▌Addison P. Rosenkrans (Democratic) 41.1% ▌William Sommers (Independent) 0.1% ▌Henry Lun (Socialist Labor) 0.1% ▌Donald Feenstra (Prohibition) 0.04% ▌Stephen J. Knechtle (Independent) 0.02% |
| New Jersey 9 | Frank C. Osmers Jr. | Republican | 1938 | Incumbent re-elected. | ▌Y Frank C. Osmers Jr. (Republican) 62.7% ▌Abram A. Lebson (Democratic) 37.2% ▌Stella Richardson (Prohibition) 0.04% |
| New Jersey 10 | Fred A. Hartley Jr. | Republican | 1928 | Incumbent re-elected. | ▌Y Fred A. Hartley Jr. (Republican) 56.8% ▌William E. Holmwood (Democratic) 41.2% ▌Alonzo Odam (Socialist) 1.3% ▌Joseph L. W. Boucher (Independent) 0.2% ▌Frank Alfone (Independent) 0.2% ▌Lawrence Mahan (Communist) 0.1% ▌Mildred Clark Bopp (Socialist Labor) 0.04% ▌Orrie De Bake (Prohibition) 0.02% |
| New Jersey 11 | Albert L. Vreeland | Republican | 1938 | Incumbent re-elected. | ▌Y Albert L. Vreeland (Republican) 55.8% ▌Mary C. Duffy (Democratic) 41.8% ▌Wesley U. Morris (Prohibition) 1.8% ▌Alfio Caudullo (Independent) 0.3% ▌Nannie Penn (Communist) 0.2% ▌John C. Privitera (Independent) 0.1% |
| New Jersey 12 | Robert Kean | Republican | 1938 | Incumbent re-elected. | ▌Y Robert Kean (Republican) 53.7% ▌Thomas J. Holleran (Democratic) 42.4% ▌Stephan J. Stein (Pension) 1.8% ▌Harry Samuel Neiwirth (Fusion) 1.6% ▌Rose Risk (Communist) 0.3% ▌John P. Wagner (Prohibition) 0.1% ▌Rubye Smith (Socialist) 0.10% ▌Ike Diamond (Roos. New Deal) 0.08% |
| New Jersey 13 | Mary Teresa Norton | Democratic | 1924 | Incumbent re-elected. | ▌Y Mary Teresa Norton (Democratic) 70.2% ▌Raymond J. Cuddy (Republican) 29.8% ▌Oscar W. Nevins (Prohibition) 0.02% |
| New Jersey 14 | Edward J. Hart | Democratic | 1934 | Incumbent re-elected. | ▌Y Edward J. Hart (Democratic) 65.3% ▌Otto Trankler (Republican) 34.6% ▌John Palangio (Socialist) 0.05% ▌Jay Anyon (Communist) 0.03% ▌S. P. Barackman (Prohibition) 0.008% |

## New Mexico

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| New Mexico at-large | John J. Dempsey | Democratic | 1934 | Incumbent retired to run for U.S. senator. Democratic hold. | ▌Y Clinton Anderson (Democratic) 58.8% ▌Herman R. Crile (Republican) 41.2% |

## New York

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| New York 1 | Leonard W. Hall | Republican | 1938 | Incumbent re-elected. | ▌Y Leonard W. Hall (Republican) 64.5% ▌Frederick S. Farah (Democratic) 33.0% ▌Sidney Edelberg (American Labor) 2.5% |
| New York 2 | William Bernard Barry | Democratic | 1935 (special) | Incumbent re-elected. | ▌Y William Bernard Barry (Democratic) 52.8% ▌Thomas J. Styles (Republican) 41.5% ▌Matthew Napear (American Labor) 5.1% ▌Paul Crosbie (Communist) 0.6% |
| New York 3 | Joseph L. Pfeifer | Democratic | 1934 | Incumbent re-elected. | ▌Y Joseph L. Pfeifer (Democratic) 70.6% ▌Samuel Rosenthal (Republican) 29.4% |
| New York 4 | Thomas H. Cullen | Democratic | 1918 | Incumbent re-elected. | ▌Y Thomas H. Cullen (Democratic) 56.2% ▌Alfred A. LaRossa (Republican) 38.3% ▌Michael Giaratano (American Labor) 5.5% |
| New York 5 | Marcellus H. Evans | Democratic | 1934 | Incumbent lost renomination. Incumbent lost re-election as a Republican. Democratic hold. | ▌Y James J. Heffernan (Democratic) 55.2% ▌Marcellus H. Evans (Republican) 44.8% |
| New York 6 | Andrew Lawrence Somers | Democratic | 1924 | Incumbent re-elected. | ▌Y Andrew Lawrence Somers (Democratic) 57.7% ▌Alfred E. Buck (Republican) 25.9% ▌Irving B. Altman (American Labor) 14.1% ▌Thomas F. Dwyer (Communist) 2.3% |
| New York 7 | John J. Delaney | Democratic | 1931 | Incumbent re-elected. | ▌Y John J. Delaney (Democratic) 72.8% ▌Julius Reinlieb (Republican) 27.2% |
| New York 8 | Donald L. O'Toole | Democratic | 1936 | Incumbent re-elected. | ▌Y Donald L. O'Toole (Democratic) 56.8% ▌Jacob M. Offenhender (Republican) 27.1% ▌Benjamin Brenner (American Labor) 13.8% ▌Robert Minor (Communist) 2.3% |
| New York 9 | Eugene James Keogh | Democratic | 1936 | Incumbent re-elected. | ▌Y Eugene James Keogh (Democratic) 57.7% ▌William J. McGahie (Republican) 42.3% |
| New York 10 | Emanuel Celler | Democratic | 1922 | Incumbent re-elected. | ▌Y Emanuel Celler (Democratic) 71.4% ▌Edward H. Wilson (Republican) 26.6% ▌Bessie Polonsky (Communist) 1.9% |
| New York 11 | James A. O'Leary | Democratic | 1934 | Incumbent re-elected. | ▌Y James A. O'Leary (Democratic) 49.4% ▌Thomas Garrett (Republican) 45.1% ▌Wellington Roe (American Labor) 5.5% |
| New York 12 | Samuel Dickstein | Democratic | 1922 | Incumbent re-elected. | ▌Y Samuel Dickstein (Democratic) 72.1% ▌Bernard Harkavey (American Labor) 15.4% ▌Joseph Levine (Republican) 12.5% |
| New York 13 | Christopher D. Sullivan | Democratic | 1916 | Incumbent retired. Democratic hold. | ▌Y Louis Capozzoli (Democratic) 62.7% ▌John Rosenberg (Republican) 28.6% ▌Geno Bardi (American Labor) 8.7% |
| New York 14 | Morris Michael Edelstein | Democratic | 1940 | Incumbent re-elected. | ▌Y Morris Michael Edelstein (Democratic) 56.9% ▌Peter J. Bakanatch (Republican) 30.0% ▌Samuel Burt (American Labor) 13.1% |
| New York 15 | Michael J. Kennedy | Democratic | 1938 | Incumbent re-elected. | ▌Y Michael J. Kennedy (Democratic) 59.7% ▌Arthur A. Wyler (Republican) 29.8% ▌Joseph Curran (American Labor) 10.5% |
| New York 16 | James H. Fay | Democratic | 1938 | Incumbent lost re-election. Republican gain. | ▌Y William T. Pheiffer (Republican) 48.7% ▌James H. Fay (Democratic) 45.2% ▌Thomas Darcey (American Labor) 6.1% |
| New York 17 | Bruce Fairchild Barton | Republican | 1937 (special) | Incumbent retired to run for U.S. senator. Republican hold. | ▌Y Kenneth F. Simpson (Republican) 51.1% ▌Samuel Kramer (Democratic) 43.5% ▌Morris Watson (American Labor) 5.4% |
| New York 18 | Martin J. Kennedy | Democratic | 1930 | Incumbent re-elected. | ▌Y Martin J. Kennedy (Democratic) 52.7% ▌James B. Walker Jr. (Republican) 41.2% ▌Shaemas O'Sheel (American Labor) 6.1% |
| New York 19 | Sol Bloom | Democratic | 1923 | Incumbent re-elected. | ▌Y Sol Bloom (Democratic) 62.8% ▌Daniel J. Riesner (Republican) 29.0% ▌Benjamin M. Zelman (American Labor) 8.1% |
| New York 20 | Vito Marcantonio | Labor | 1938 | Incumbent re-elected. | ▌Y Vito Marcantonio (American Labor) 62.5% ▌James J. Lanzetta (Democratic) 37.5% |
| New York 21 | Joseph A. Gavagan | Democratic | 1929 | Incumbent re-elected. | ▌Y Joseph A. Gavagan (Democratic) 63.2% ▌Charles H. Roberts (Republican) 27.1% ▌Alfred K. Stern (American Labor) 9.7% |
| New York 22 | Walter A. Lynch | Democratic | 1940 | Incumbent re-elected. | ▌Y Walter A. Lynch (Democratic) 60.1% ▌F. Shepard Cornell (Republican) 31.9% ▌Frank Crosswaith (American Labor) 8.0% |
| New York 23 | Charles A. Buckley | Democratic | 1934 | Incumbent re-elected. | ▌Y Charles A. Buckley (Democratic) 56.5% ▌Lowell H. Brown (Republican) 26.1% ▌Jack Altman (American Labor) 14.9% ▌Isidore Begun (Communist) 2.4% ▌Max Shachtman (Workers) 0.1% |
| New York 24 | James M. Fitzpatrick | Democratic | 1926 | Incumbent re-elected. | ▌Y James M. Fitzpatrick (Democratic) 47.7% ▌Ralph W. Gwinn (Republican) 40.4% ▌George Thomas (American Labor) 10.4% ▌Antonio Lombardo (Communist) 1.6% |
| New York 25 | Ralph A. Gamble | Republican | 1937 (special) | Incumbent re-elected. | ▌Y Ralph A. Gamble (Republican) 64.0% ▌Homer A. Stebbins (Democratic) 33.1% ▌George O. Pershing (American Labor) 2.9% |
| New York 26 | Hamilton Fish III | Republican | 1920 | Incumbent re-elected. | ▌Y Hamilton Fish III (Republican) 51.9% ▌Hardy Steeholm (Democratic) 45.1% ▌Con Miller (American Labor) 3.1% |
| New York 27 | Lewis K. Rockefeller | Republican | 1937 (special) | Incumbent re-elected. | ▌Y Lewis K. Rockefeller (Republican) 58.0% ▌George J. Mutari (Democratic) 42.0% |
| New York 28 | William T. Byrne | Democratic | 1936 | Incumbent re-elected. | ▌Y William T. Byrne (Democratic) 57.8% ▌William V. A. Waterman (Republican) 38.3% ▌Jack Davis (American Labor) 4.0% |
| New York 29 | E. Harold Cluett | Republican | 1936 | Incumbent re-elected. | ▌Y E. Harold Cluett (Republican) 63.7% ▌Salvatore J. Leombruno (Democratic) 33.7% ▌Coleman B. Cheney (American Labor) 2.6% |
| New York 30 | Frank Crowther | Republican | 1918 | Incumbent re-elected. | ▌Y Frank Crowther (Republican) 54.8% ▌Burlin G. McKillip (Democratic) 42.5% ▌John McMahon (American Labor) 2.7% |
| New York 31 | Clarence E. Kilburn | Republican | 1940 | Incumbent re-elected. | ▌Y Clarence E. Kilburn (Republican) 62.5% ▌Horatio W. Thomas (Democratic) 37.5% |
| New York 32 | Francis D. Culkin | Republican | 1928 | Incumbent re-elected. | ▌Y Francis D. Culkin (Republican) 68.8% ▌Frank W. McCormack (Democratic) 28.8% ▌Clarence Stuber (American Labor) 2.4% |
| New York 33 | Fred J. Douglas | Republican | 1936 | Incumbent re-elected. | ▌Y Fred J. Douglas (Republican) 56.4% ▌Samuel H. Miller (Democratic) 40.9% ▌Edward G. Cluney (American Labor) 2.7% |
| New York 34 | Edwin Arthur Hall | Republican | 1939 (special) | Incumbent re-elected. | ▌Y Edwin Arthur Hall (Republican) 68.3% ▌Donald W. Kramer (Democratic) 29.8% ▌William Livings (American Labor) 1.9% |
| New York 35 | Clarence E. Hancock | Republican | 1927 | Incumbent re-elected. | ▌Y Clarence E. Hancock (Republican) 56.8% ▌Flora D. Johnson (Democratic) 40.6% ▌Walter Soule (American Labor) 2.6% |
| New York 36 | John Taber | Republican | 1922 | Incumbent re-elected. | ▌Y John Taber (Republican) 59.6% ▌John W. Kennelly (Democratic) 37.8% ▌Walter Walczyck (American Labor) 2.6% |
| New York 37 | W. Sterling Cole | Republican | 1934 | Incumbent re-elected. | ▌Y W. Sterling Cole (Republican) 64.9% ▌David Moses (Democratic) 32.9% ▌L. Cyrus Rigby (American Labor) 2.2% |
| New York 38 | Joseph J. O'Brien | Republican | 1938 | Incumbent re-elected. | ▌Y Joseph J. O'Brien (Republican) 51.9% ▌George B. Kelly (Democratic) 48.1% |
| New York 39 | James W. Wadsworth Jr. | Republican | 1932 | Incumbent re-elected. | ▌Y James W. Wadsworth Jr. (Republican) 60.4% ▌J. Frederick Colson (Democratic) 39.6% |
| New York 40 | Walter G. Andrews | Republican | 1930 | Incumbent re-elected. | ▌Y Walter G. Andrews (Republican) 61.1% ▌Robert A. Hoffman (Democratic) 38.9% |
| New York 41 | J. Francis Harter | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Alfred F. Beiter (Democratic) 52.3% ▌J. Francis Harter (Republican) 47.7% |
| New York 42 | Pius Schwert | Democratic | 1938 | Incumbent re-elected. | ▌Y Pius Schwert (Democratic) 58.8% ▌Edward F. Moss (Republican) 41.0% ▌Mattie Green (Communist) 0.2% |
| New York 43 | Daniel A. Reed | Republican | 1918 | Incumbent re-elected. | ▌Y Daniel A. Reed (Republican) 62.2% ▌Milton A. Bissell (Democratic) 37.8% |
| New York at-large | Caroline O'Day | Democratic | 1934 | Incumbent re-elected. | ▌Y Caroline O'Day (Democratic) 26.6% ▌Matthew J. Merritt (Democratic) 26.4% ▌Mary H. Donlon (Republican) 23.5% ▌Messmore Kendall (Republican) 23.4% ▌Helen G. H. Estelle (Prohibition) 0.05% ▌Neil Dow Cranmer (Prohibition) 0.04% |
| New York at-large | Matthew J. Merritt | Democratic | 1934 | Incumbent re-elected. | ▌Y Caroline O'Day (Democratic) 26.6% ▌Matthew J. Merritt (Democratic) 26.4% ▌Mary H. Donlon (Republican) 23.5% ▌Messmore Kendall (Republican) 23.4% ▌Helen G. H. Estelle (Prohibition) 0.05% ▌Neil Dow Cranmer (Prohibition) 0.04% |

## North Carolina

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| North Carolina 1 | Lindsay C. Warren | Democratic | 1924 | Incumbent resigned to become Comptroller General. Democratic hold. | ▌Y Herbert Covington Bonner (Democratic) 92.8% ▌John A. Wilkinson (Republican) 7.2% |
| North Carolina 2 | John H. Kerr | Democratic | 1923 | Incumbent re-elected. | ▌Y John H. Kerr (Democratic) Uncontested |
| North Carolina 3 | Graham Arthur Barden | Democratic | 1934 | Incumbent re-elected. | ▌Y Graham Arthur Barden (Democratic) 75.0% ▌Julian T. Gaskill (Republican) 25.0% |
| North Carolina 4 | Harold D. Cooley | Democratic | 1934 | Incumbent re-elected. | ▌Y Harold D. Cooley (Democratic) 79.4% ▌Ezra Parker (Republican) 20.6% |
| North Carolina 5 | Alonzo Dillard Folger | Democratic | 1938 | Incumbent re-elected. | ▌Y Alonzo Dillard Folger (Democratic) 77.2% ▌Ottis James Reynolds (Republican) 22.8% |
| North Carolina 6 | Carl T. Durham | Democratic | 1938 | Incumbent re-elected. | ▌Y Carl T. Durham (Democratic) 78.5% ▌Gilliam Grissom (Independent) 21.5% |
| North Carolina 7 | J. Bayard Clark | Democratic | 1928 | Incumbent re-elected. | ▌Y J. Bayard Clark (Democratic) 85.3% ▌Fred R. Keith (Republican) 14.7% |
| North Carolina 8 | William O. Burgin | Democratic | 1938 | Incumbent re-elected. | ▌Y William O. Burgin (Democratic) 67.2% ▌F. D. B. Harding (Republican) 32.8% |
| North Carolina 9 | Robert L. Doughton | Democratic | 1910 | Incumbent re-elected. | ▌Y Robert L. Doughton (Democratic) 68.3% ▌Monroe Adams (Republican) 31.7% |
| North Carolina 10 | Alfred L. Bulwinkle | Democratic | 1930 | Incumbent re-elected. | ▌Y Alfred L. Bulwinkle (Democratic) 69.8% ▌Ernest M. Morgan (Republican) 30.2% |
| North Carolina 11 | Zebulon Weaver | Democratic | 1930 | Incumbent re-elected. | ▌Y Zebulon Weaver (Democratic) 69.0% ▌Robert Frank Jarrett (Republican) 31.0% |

## North Dakota

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| North Dakota at-large | Usher L. Burdick | Republican-NPL | 1934 | Incumbent re-elected. | ▌Y Usher L. Burdick (Republican-NPL) 34.4% ▌Y Charles R. Robertson (Republican) 25.8% ▌R. J. Downey (Democratic) 14.8% ▌Adolph Michelson (Democratic) 14.6% ▌Thomas Hall (Independent) 5.4% ▌John Omland (Independent) 4.8% |
| North Dakota at-large | William Lemke | Republican-NPL | 1932 | Incumbent retired to run for U.S. senator. Republican hold. | ▌Y Usher L. Burdick (Republican-NPL) 34.4% ▌Y Charles R. Robertson (Republican) 25.8% ▌R. J. Downey (Democratic) 14.8% ▌Adolph Michelson (Democratic) 14.6% ▌Thomas Hall (Independent) 5.4% ▌John Omland (Independent) 4.8% |

## Ohio

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Ohio 1 | Charles H. Elston | Republican | 1938 | Incumbent re-elected. | ▌Y Charles H. Elston (Republican) 58.0% ▌Joseph A. Dixon (Democratic) 42.0% |
| Ohio 2 | William E. Hess | Republican | 1938 | Incumbent re-elected. | ▌Y William E. Hess (Republican) 56.3% ▌James E. O'Connell (Democratic) 43.7% |
| Ohio 3 | Harry N. Routzohn | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Greg J. Holbrock (Democratic) 52.6% ▌Harry N. Routzohn (Republican) 47.4% |
| Ohio 4 | Robert Franklin Jones | Republican | 1938 | Incumbent re-elected. | ▌Y Robert Franklin Jones (Republican) 57.8% ▌Clarence C. Miller (Democratic) 42.2% |
| Ohio 5 | Cliff Clevenger | Republican | 1938 | Incumbent re-elected. | ▌Y Cliff Clevenger (Republican) 60.7% ▌C. H. Armbruater (Democratic) 39.3% |
| Ohio 6 | James G. Polk | Democratic | 1930 | Incumbent retired. Democratic hold. | ▌Y Jacob E. Davis (Democratic) 52.2% ▌Chester P. Fitch (Republican) 47.8% |
| Ohio 7 | Clarence J. Brown | Republican | 1938 | Incumbent re-elected. | ▌Y Clarence J. Brown (Republican) 58.3% ▌J. Fuller Trump (Democratic) 41.7% |
| Ohio 8 | Frederick C. Smith | Republican | 1938 | Incumbent re-elected. | ▌Y Frederick C. Smith (Republican) 52.5% ▌Kenneth M. Petri (Democratic) 47.5% |
| Ohio 9 | John F. Hunter | Democratic | 1936 | Incumbent re-elected. | ▌Y John F. Hunter (Democratic) 54.7% ▌Wilbur M. White (Republican) 45.3% |
| Ohio 10 | Thomas A. Jenkins | Republican | 1924 | Incumbent re-elected. | ▌Y Thomas A. Jenkins (Republican) 58.9% ▌John P. Kelso (Democratic) 41.1% |
| Ohio 11 | Harold K. Claypool | Democratic | 1936 | Incumbent re-elected. | ▌Y Harold K. Claypool (Democratic) 53.8% ▌Ray W. Davis (Republican) 46.2% |
| Ohio 12 | John M. Vorys | Republican | 1938 | Incumbent re-elected. | ▌Y John M. Vorys (Republican) 51.3% ▌Arthur P. Lamneck (Democratic) 48.7% |
| Ohio 13 | Dudley A. White | Republican | 1936 | Incumbent retired to run for U.S. senator. Republican hold. | ▌Y Albert David Baumhart Jr. (Republican) 60.8% ▌Werner S. Haslinger (Democratic) 39.2% |
| Ohio 14 | Dow W. Harter | Democratic | 1932 | Incumbent re-elected. | ▌Y Dow W. Harter (Democratic) 52.3% ▌Walter B. Wanamaker (Republican) 46.6% ▌Cornelius Kohlmyer (Independent) 1.1% |
| Ohio 15 | Robert T. Secrest | Democratic | 1932 | Incumbent re-elected. | ▌Y Robert T. Secrest (Democratic) 58.8% ▌Clair A. Young (Republican) 41.2% |
| Ohio 16 | James Seccombe | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y William R. Thom (Democratic) 56.3% ▌James Seccombe (Republican) 43.7% |
| Ohio 17 | J. Harry McGregor | Republican | 1940 | Incumbent re-elected. | ▌Y J. Harry McGregor (Republican) 55.1% ▌Ralph C. Lutz (Democratic) 44.9% |
| Ohio 18 | Earl R. Lewis | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Lawrence E. Imhoff (Democratic) 54.5% ▌Earl R. Lewis (Republican) 45.5% |
| Ohio 19 | Michael J. Kirwan | Democratic | 1936 | Incumbent re-elected. | ▌Y Michael J. Kirwan (Democratic) 61.9% ▌Charles H. Anderson (Republican) 38.1% |
| Ohio 20 | Martin L. Sweeney | Democratic | 1931 | Incumbent re-elected. | ▌Y Martin L. Sweeney (Democratic) 67.7% ▌George Pillersdorf (Republican) 32.3% |
| Ohio 21 | Robert Crosser | Democratic | 1922 | Incumbent re-elected. | ▌Y Robert Crosser (Democratic) 77.1% ▌J. E. Chizek (Republican) 22.9% |
| Ohio 22 | Frances P. Bolton | Republican | 1940 | Incumbent re-elected. | ▌Y Frances P. Bolton (Republican) 56.7% ▌Anthony A. Fleger (Democratic) 43.3% |
| Ohio at-large | George H. Bender | Republican | 1938 | Incumbent re-elected. | ▌Y George H. Bender (Republican) 26.3% ▌Y Stephen M. Young (Democratic) 25.7% ▌L. L. Marshall (Republican) 24.0% ▌Francis W. Durbin (Democratic) 24.0% |
| Ohio at-large | L. L. Marshall | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y George H. Bender (Republican) 26.3% ▌Y Stephen M. Young (Democratic) 25.7% ▌L. L. Marshall (Republican) 24.0% ▌Francis W. Durbin (Democratic) 24.0% |

## Oklahoma

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Oklahoma 1 | Wesley E. Disney | Democratic | 1930 | Incumbent re-elected. | ▌Y Wesley E. Disney (Democratic) 62.2% ▌W. R. Boyd (Republican) 37.4% ▌Martha A. Morrison (Prohibition) 0.3% ▌Bill Edwards (Independent) 0.1% |
| Oklahoma 2 | John Conover Nichols | Democratic | 1934 | Incumbent re-elected. | ▌Y John Conover Nichols (Democratic) 62.2% ▌E. O. Clark (Republican) 37.8% |
| Oklahoma 3 | Wilburn Cartwright | Democratic | 1926 | Incumbent re-elected. | ▌Y Wilburn Cartwright (Democratic) 79.0% ▌Frank D. McSherry (Republican) 21.0% |
| Oklahoma 4 | Lyle Boren | Democratic | 1936 | Incumbent re-elected. | ▌Y Lyle Boren (Democratic) 71.1% ▌Clyde T. Patrick (Republican) 28.9% |
| Oklahoma 5 | Mike Monroney | Democratic | 1938 | Incumbent re-elected. | ▌Y Mike Monroney (Democratic) 72.4% ▌U. S. Stone (Republican) 27.1% ▌Lizzie Varvil (Prohibition) 0.4% ▌John Franing (Independent) 0.1% |
| Oklahoma 6 | Jed Johnson | Democratic | 1926 | Incumbent re-elected. | ▌Y Jed Johnson (Democratic) 70.1% ▌Walter Hubbell (Republican) 29.9% |
| Oklahoma 7 | Sam C. Massingale | Democratic | 1934 | Incumbent re-elected. | ▌Y Sam C. Massingale (Democratic) 70.0% ▌Place Montgomery (Republican) 28.5% ▌T. H. McLemore (Independent) 1.5% |
| Oklahoma 8 | Phil Ferguson | Democratic | 1934 | Incumbent lost re-election. Republican gain. | ▌Y Ross Rizley (Republican) 53.8% ▌Phil Ferguson (Democratic) 45.7% ▌Ralph E. Butterfield (Prohibition) 0.4% |
| Oklahoma at-large | Will Rogers | Democratic | 1932 | Incumbent re-elected. | ▌Y Will Rogers (Democratic) 65.7% ▌John W. Harreld (Republican) 33.6% ▌E. W. Fickinger (Prohibition) 0.4% ▌Robert Wood (Independent) 0.2% |

## Oregon

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Oregon 1 | James W. Mott | Republican | 1932 | Incumbent re-elected. | ▌Y James W. Mott (Republican) 68.3% ▌Charles A. Robertson (Democratic) 30.0% ▌Upton A. Upton (Socialist Labor) 1.7% |
| Oregon 2 | Walter M. Pierce | Democratic | 1932 | Incumbent re-elected. | ▌Y Walter M. Pierce (Democratic) 56.2% ▌Rex Ellis (Republican) 42.1% ▌Pauline Sears (Socialist Labor) 1.7% |
| Oregon 3 | Homer D. Angell | Republican | 1938 | Incumbent re-elected. | ▌Y Homer D. Angell (Republican) 49.9% ▌Nan Wood Honeyman (Democratic) 47.9% ▌H. H. Stallard (Independent) 1.6% ▌Lester E. Harnden (Socialist Labor) 0.7% |

## Pennsylvania

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Pennsylvania 1 | Leon Sacks | Democratic | 1936 | Incumbent re-elected. | ▌Y Leon Sacks (Democratic) 61.6% ▌Emanuel W. Beloff (Republican) 38.0% ▌Frank Mozer (Communist) 0.2% ▌George Silver (Socialist) 0.2% |
| Pennsylvania 2 | James P. McGranery | Democratic | 1936 | Incumbent re-elected. | ▌Y James P. McGranery (Democratic) 60.9% ▌Augustus Trask Ashton (Republican) 38.3% ▌Ella Bloor Omholt (Communist) 0.4% ▌Hyman Siegel (Socialist) 0.2% ▌B. A. Jackson (No Wage Tax) 0.1% ▌L. McCabe Johnson (Prohibition) 0.07% |
| Pennsylvania 3 | Michael J. Bradley | Democratic | 1936 | Incumbent re-elected. | ▌Y Michael J. Bradley (Democratic) 63.1% ▌Frank J. Kownacki (Republican) 36.5% ▌Joseph Backer (Socialist) 0.2% ▌Thomas Nabried (Communist) 0.2% |
| Pennsylvania 4 | John E. Sheridan | Democratic | 1939 (special) | Incumbent re-elected. | ▌Y John E. Sheridan (Democratic) 63.0% ▌Benjamin M. Golder (Republican) 36.0% ▌Norris G. Wood (Communist) 0.3% ▌William E. Martin (Socialist) 0.3% ▌Harry L. Neal (State Rights) 0.2% ▌John Cunningham (American Way) 0.06% |
| Pennsylvania 5 | Fred C. Gartner | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Francis R. Smith (Democratic) 55.8% ▌Fred C. Gartner (Republican) 43.7% ▌Bernard Samoff (Socialist) 0.3% ▌Harry Casey (Communist) 0.1% ▌Oscar W. Wall (Prohibition) 0.08% |
| Pennsylvania 6 | Francis J. Myers | Democratic | 1938 | Incumbent re-elected. | ▌Y Francis J. Myers (Democratic) 61.1% ▌Frank Truscott (Republican) 38.0% ▌Harold B. Hatfield (No Wage Tax) 0.5% ▌Joseph Dougher (Communist) 0.2% ▌Edward Gallob (Socialist) 0.1% |
| Pennsylvania 7 | George P. Darrow | Republican | 1938 | Incumbent retired. Republican hold. | ▌Y Hugh Scott (Republican) 50.9% ▌Gilbert Cassidy (Democratic) 48.8% ▌William O'Reilly (Socialist) 0.3% |
| Pennsylvania 8 | James Wolfenden | Republican | 1928 | Incumbent re-elected. | ▌Y James Wolfenden (Republican) 57.6% ▌E. Adele Scott Saul (Democratic) 42.2% ▌Charles Palmer (Prohibition) 0.2% |
| Pennsylvania 9 | Charles L. Gerlach | Republican | 1938 | Incumbent re-elected. | ▌Y Charles L. Gerlach (Republican) 52.4% ▌Henry V. Scheirer (Democratic) 47.4% ▌Byron Mayberry (Prohibition) 0.2% |
| Pennsylvania 10 | J. Roland Kinzer | Republican | 1930 | Incumbent re-elected. | ▌Y J. Roland Kinzer (Republican) 57.7% ▌George M. May (Democratic) 42.2% ▌John Granville Eddy (Communist) 0.08% |
| Pennsylvania 11 | Patrick J. Boland | Democratic | 1930 | Incumbent re-elected. | ▌Y Patrick J. Boland (Democratic) 52.6% ▌Joseph F. Gunster (Republican) 47.4% |
| Pennsylvania 12 | J. Harold Flannery | Democratic | 1936 | Incumbent re-elected. | ▌Y J. Harold Flannery (Democratic) 57.8% ▌J. Henry Pool (Republican) 42.2% |
| Pennsylvania 13 | Ivor D. Fenton | Republican | 1938 | Incumbent re-elected. | ▌Y Ivor D. Fenton (Republican) 50.5% ▌James H. Gildea (Democratic) 48.9% ▌Robert J. Lesser (Independent) 0.6% |
| Pennsylvania 14 | Guy L. Moser | Democratic | 1936 | Incumbent re-elected. | ▌Y Guy L. Moser (Democratic) 56.0% ▌John C. Evans (Republican) 37.0% ▌Raymond S. Hofses (Socialist) 5.8% ▌Harry A. Obold (Independent) 0.8% ▌William N. Stottlemyer (Prohibition) 0.2% ▌Ben Rubin (Communist) 0.1% |
| Pennsylvania 15 | Albert G. Rutherford | Republican | 1936 | Incumbent re-elected. | ▌Y Albert G. Rutherford (Republican) 60.4% ▌F. R. Clark (Democratic) 39.2% ▌Fred P. Millington (Prohibition) 0.4% |
| Pennsylvania 16 | Robert F. Rich | Republican | 1930 | Incumbent re-elected. | ▌Y Robert F. Rich (Republican) 60.5% ▌Hugh Gilmore (Democratic) 39.5% |
| Pennsylvania 17 | J. William Ditter | Republican | 1932 | Incumbent re-elected. | ▌Y J. William Ditter (Republican) 62.2% ▌Victor Eppstein (Democratic) 37.8% |
| Pennsylvania 18 | Richard M. Simpson | Republican | 1937 (special) | Incumbent re-elected. | ▌Y Richard M. Simpson (Republican) 57.6% ▌John M. Keichline (Democratic) 42.4% |
| Pennsylvania 19 | John C. Kunkel | Republican | 1938 | Incumbent re-elected. | ▌Y John C. Kunkel (Republican) 54.4% ▌John A. Smith (Democratic) 45.6% |
| Pennsylvania 20 | Benjamin Jarrett | Republican | 1936 | Incumbent re-elected. | ▌Y Benjamin Jarrett (Republican) 58.2% ▌John R. Boland Jr. (Democratic) 40.8% ▌Robert G. Burnham (Prohibition) 1.0% |
| Pennsylvania 21 | Francis E. Walter | Democratic | 1932 | Incumbent re-elected. | ▌Y Francis E. Walter (Democratic) 56.2% ▌T. Fred Woodley (Republican) 43.7% ▌Walter M. Trumbull (Communist) 0.1% |
| Pennsylvania 22 | Chester H. Gross | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Harry L. Haines (Democratic) 54.8% ▌Chester H. Gross (Republican) 44.6% ▌Raymond N. Fehl (Republican) 0.5% |
| Pennsylvania 23 | James E. Van Zandt | Republican | 1938 | Incumbent re-elected. | ▌Y James E. Van Zandt (Republican) 56.3% ▌William M. Aukerman (Democratic) 43.7% |
| Pennsylvania 24 | J. Buell Snyder | Democratic | 1932 | Incumbent re-elected. | ▌Y J. Buell Snyder (Democratic) 56.6% ▌J. Clarke Glassburn (Republican) 43.2% ▌Minnie B. Shaulis (Prohibition) 0.2% |
| Pennsylvania 25 | Charles I. Faddis | Democratic | 1932 | Incumbent re-elected. | ▌Y Charles I. Faddis (Democratic) 61.0% ▌Lucius McK. Crumrine (Republican) 39.0% |
| Pennsylvania 26 | Louis E. Graham | Republican | 1938 | Incumbent re-elected. | ▌Y Louis E. Graham (Republican) 50.9% ▌Peter P. Reising (Democratic) 49.1% |
| Pennsylvania 27 | Harve Tibbott | Republican | 1938 | Incumbent re-elected. | ▌Y Harve Tibbott (Republican) 51.6% ▌Joseph Anthony Gray (Democratic) 47.8% ▌James O. Archer (Prohibition) 0.5% |
| Pennsylvania 28 | Robert G. Allen | Democratic | 1936 | Incumbent retired. Democratic hold. | ▌Y Augustine B. Kelley (Democratic) 55.4% ▌James M. Underwood (Republican) 42.0% ▌A. F. Daughenbaugh (Prog. Labor) 2.1% ▌S. W. Bierer (Prohibition) 0.5% |
| Pennsylvania 29 | Robert L. Rodgers | Republican | 1938 | Incumbent re-elected. | ▌Y Robert L. Rodgers (Republican) 54.2% ▌James F. Lavery (Democratic) 45.4% ▌Ira M. Ramsey (Prohibition) 0.4% |
| Pennsylvania 30 | Robert J. Corbett | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Thomas E. Scanlon (Democratic) 50.1% ▌Robert J. Corbett (Republican) 49.9% |
| Pennsylvania 31 | John McDowell | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Samuel A. Weiss (Democratic) 55.7% ▌John McDowell (Republican) 43.5% ▌M. J. Dibble (Prohibition) 0.3% ▌George Bush (Prog. Labor) 0.3% ▌Ben Findley (Communist) 0.2% |
| Pennsylvania 32 | Herman P. Eberharter | Democratic | 1936 | Incumbent re-elected. | ▌Y Herman P. Eberharter (Democratic) 68.6% ▌Samuel M. Jackson (Republican) 31.1% ▌H. Joseph Filner (Communist) 0.2% |
| Pennsylvania 33 | Joseph A. McArdle | Democratic | 1938 | Incumbent re-elected. | ▌Y Joseph A. McArdle (Democratic) 55.0% ▌James I. Marsh (Republican) 44.9% ▌Charles A. Brown (Prohibition) 0.1% |
| Pennsylvania 34 | Matthew A. Dunn | Democratic | 1932 | Incumbent retired. Democratic hold. | ▌Y James A. Wright (Democratic) 53.8% ▌Robert B. McKinley (Republican) 46.2% |

## Rhode Island

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Rhode Island 1 | Charles Risk | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Aime Forand (Democratic) 57.5% ▌Charles Risk (Republican) 42.5% |
| Rhode Island 2 | Harry Sandager | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y John E. Fogarty (Democratic) 53.8% ▌Harry Sandager (Republican) 46.2% |

## South Carolina

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| South Carolina 1 | Clara G. McMillan | Democratic | 1939 (special) | Incumbent retired. Democratic hold. | ▌Y L. Mendel Rivers (Democratic) 98.4% ▌Mrs. J. E. Messervy (Republican) 1.6% |
| South Carolina 2 | Hampton P. Fulmer | Democratic | 1920 | Incumbent re-elected. | ▌Y Hampton P. Fulmer (Democratic) 98.6% ▌M. B. Cross (Republican) 1.4% |
| South Carolina 3 | Butler B. Hare | Democratic | 1938 | Incumbent re-elected. | ▌Y Butler B. Hare (Democratic) 99.3% ▌A. F. Ernest (Republican) 0.7% |
| South Carolina 4 | Joseph R. Bryson | Democratic | 1938 | Incumbent re-elected. | ▌Y Joseph R. Bryson (Democratic) 97.3% ▌James D. McCullough (Republican) 2.7% |
| South Carolina 5 | James P. Richards | Democratic | 1932 | Incumbent re-elected. | ▌Y James P. Richards (Democratic) 99.2% ▌C. F. Pendleton (Republican) 0.8% ▌J. Bates Gerald (Independent) 0.03% |
| South Carolina 6 | John L. McMillan | Democratic | 1938 | Incumbent re-elected. | ▌Y John L. McMillan (Democratic) 99.0% ▌C. B. Ruffin (Republican) 1.0% |

## South Dakota

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| South Dakota 1 | Karl Mundt | Republican | 1938 | Incumbent re-elected. | ▌Y Karl Mundt (Republican) 59.6% ▌Oscar Fosheim (Democratic) 40.4% |
| South Dakota 2 | Francis Case | Republican | 1936 | Incumbent re-elected. | ▌Y Francis Case (Republican) 66.1% ▌Arthur W. Watwood (Democratic) 33.9% |

## Tennessee

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Tennessee 1 | B. Carroll Reece | Republican | 1932 | Incumbent re-elected. | ▌Y B. Carroll Reece (Republican) 68.7% ▌Robert E. Walker (Democratic) 31.3% |
| Tennessee 2 | John Jennings | Republican | 1939 (special) | Incumbent re-elected. | ▌Y John Jennings (Republican) 56.6% ▌Clay James (Democratic) 43.4% |
| Tennessee 3 | Estes Kefauver | Democratic | 1939 (special) | Incumbent re-elected. | ▌Y Estes Kefauver (Democratic) 68.7% ▌Jerome Taylor (Republican) 31.3% |
| Tennessee 4 | Albert Gore Sr. | Democratic | 1938 | Incumbent re-elected. | ▌Y Albert Gore Sr. (Democratic) 88.9% ▌H. E. McLean (Republican) 11.1% |
| Tennessee 5 | Joseph W. Byrns Jr. | Democratic | 1938 | Incumbent lost re-election. Independent gain. Winner subsequently joined Democratic caucus. | ▌Y Percy Priest (Independent) 50.2% ▌Joseph W. Byrns Jr. (Democratic) 42.8% ▌Julian H. Campbell (Republican) 7.1% |
| Tennessee 6 | W. Wirt Courtney | Democratic | 1939 (special) | Incumbent re-elected. | ▌Y W. Wirt Courtney (Democratic) Uncontested |
| Tennessee 7 | Herron C. Pearson | Democratic | 1934 | Incumbent re-elected. | ▌Y Herron C. Pearson (Democratic) Uncontested |
| Tennessee 8 | Jere Cooper | Democratic | 1928 | Incumbent re-elected. | ▌Y Jere Cooper (Democratic) 92.1% ▌Julian Palmer (Independent) 7.9% |
| Tennessee 9 | Clifford Davis | Democratic | 1940 | Incumbent re-elected. | ▌Y Clifford Davis (Democratic) 96.0% ▌Theo Wynn Larwill (Independent) 4.0% |

## Texas

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Texas 1 | Wright Patman | Democratic | 1928 | Incumbent re-elected. | ▌Y Wright Patman (Democratic) Uncontested |
| Texas 2 | Martin Dies Jr. | Democratic | 1930 | Incumbent re-elected. | ▌Y Martin Dies Jr. (Democratic) Uncontested |
| Texas 3 | Lindley Beckworth | Democratic | 1938 | Incumbent re-elected. | ▌Y Lindley Beckworth (Democratic) Uncontested |
| Texas 4 | Sam Rayburn | Democratic | 1912 | Incumbent re-elected. | ▌Y Sam Rayburn (Democratic) Uncontested |
| Texas 5 | Hatton W. Sumners | Democratic | 1914 | Incumbent re-elected. | ▌Y Hatton W. Sumners (Democratic) 87.5% ▌Floyd B. Royer (Republican) 12.5% |
| Texas 6 | Luther A. Johnson | Democratic | 1922 | Incumbent re-elected. | ▌Y Luther A. Johnson (Democratic) Uncontested |
| Texas 7 | Nat Patton | Democratic | 1934 | Incumbent re-elected. | ▌Y Nat Patton (Democratic) 98.2% ▌Dudley Lawson (Republican) 1.8% |
| Texas 8 | Albert Thomas | Democratic | 1936 | Incumbent re-elected. | ▌Y Albert Thomas (Democratic) 94.8% ▌M. U. S. Kjorlang (Republican) 5.2% |
| Texas 9 | Joseph J. Mansfield | Democratic | 1916 | Incumbent re-elected. | ▌Y Joseph J. Mansfield (Democratic) Uncontested |
| Texas 10 | Lyndon B. Johnson | Democratic | 1937 (special) | Incumbent re-elected. | ▌Y Lyndon B. Johnson (Democratic) Uncontested |
| Texas 11 | William R. Poage | Democratic | 1936 | Incumbent re-elected. | ▌Y William R. Poage (Democratic) Uncontested |
| Texas 12 | Fritz G. Lanham | Democratic | 1919 | Incumbent re-elected. | ▌Y Fritz G. Lanham (Democratic) Uncontested |
| Texas 13 | Ed Gossett | Democratic | 1938 | Incumbent re-elected. | ▌Y Ed Gossett (Democratic) 96.4% ▌Louis N. Gould (Republican) 3.6% |
| Texas 14 | Richard M. Kleberg | Democratic | 1931 | Incumbent re-elected. | ▌Y Richard M. Kleberg (Democratic) Uncontested |
| Texas 15 | Milton H. West | Democratic | 1933 (special) | Incumbent re-elected. | ▌Y Milton H. West (Democratic) 92.4% ▌J. A. Simpson (Republican) 7.6% |
| Texas 16 | R. Ewing Thomason | Democratic | 1930 | Incumbent re-elected. | ▌Y R. Ewing Thomason (Democratic) Uncontested |
| Texas 17 | Clyde L. Garrett | Democratic | 1936 | Incumbent lost renomination. Democratic hold. | ▌Y Sam M. Russell (Democratic) Uncontested |
| Texas 18 | John Marvin Jones | Democratic | 1916 | Incumbent retired to become a U.S. Court of Claims judge. Democratic hold. | ▌Y Eugene Worley (Democratic) 96.5% ▌John W. Beveridge (Republican) 3.5% |
| 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) 83.4% ▌Harry Hotchkin (Republican) 16.5% ▌Emma Tenayuca (Communist) 0.1% |
| Texas 21 | Charles L. South | Democratic | 1934 | Incumbent re-elected. | ▌Y Charles L. South (Democratic) 92.8% ▌Ray Ridenhour (Republican) 7.2% |

## Utah

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Utah 1 | Abe Murdock | Democratic | 1932 | Incumbent retired to run for U.S. senator. Democratic hold. | ▌Y Walter K. Granger (Democratic) 57.1% ▌LeRoy B. Young (Republican) 42.9% |
| Utah 2 | J. W. Robinson | Democratic | 1932 | Incumbent re-elected. | ▌Y J. W. Robinson (Democratic) 63.3% ▌A. Sherman Christenson (Republican) 36.7% |

## Vermont

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Vermont at-large | Charles Albert Plumley | Republican | 1934 | Incumbent re-elected. | ▌Y Charles Albert Plumley (Republican) 63.8% ▌Michael J. Rock (Democratic) 36.2% |

## Virginia

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Virginia 1 | S. Otis Bland | Democratic | 1918 | Incumbent re-elected. | ▌Y S. Otis Bland (Democratic) Uncontested |
| Virginia 2 | Colgate Darden | Democratic | 1938 | Incumbent re-elected. | ▌Y Colgate Darden (Democratic) Uncontested |
| Virginia 3 | Dave E. Satterfield Jr. | Democratic | 1937 (special) | Incumbent re-elected. | ▌Y Dave E. Satterfield Jr. (Democratic) 96.9% ▌Winston Dawson (Independent) 3.1% |
| Virginia 4 | Patrick H. Drewry | Democratic | 1920 | Incumbent re-elected. | ▌Y Patrick H. Drewry (Democratic) 96.0% ▌Cyrus Hotchkiss (Socialist) 4.0% |
| Virginia 5 | Thomas G. Burch | Democratic | 1930 | Incumbent re-elected. | ▌Y Thomas G. Burch (Democratic) Uncontested |
| Virginia 6 | Clifton A. Woodrum | Democratic | 1922 | Incumbent re-elected. | ▌Y Clifton A. Woodrum (Democratic) 68.1% ▌Fred W. McWane (Republican) 31.4% ▌Lawrence S. Wilkes (Socialist) 0.4% |
| Virginia 7 | A. Willis Robertson | Democratic | 1932 | Incumbent re-elected. | ▌Y A. Willis Robertson (Democratic) 65.1% ▌Jacob A. Garber (Republican) 34.7% ▌Lester Ruffner (Communist) 0.2% |
| Virginia 8 | Howard W. Smith | Democratic | 1930 | Incumbent re-elected. | ▌Y Howard W. Smith (Democratic) 79.0% ▌Henry B. Goodloe (Republican) 21.0% |
| Virginia 9 | John W. Flannagan Jr. | Democratic | 1930 | Incumbent re-elected. | ▌Y John W. Flannagan Jr. (Democratic) 57.3% ▌Fred C. Parks (Republican) 42.7% |

## Washington

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Washington 1 | Warren Magnuson | Democratic | 1936 | Incumbent re-elected. | ▌Y Warren Magnuson (Democratic) 61.6% ▌Fred J. Wettrick (Republican) 38.4% |
| Washington 2 | Monrad Wallgren | Democratic | 1932 | Incumbent retired to run for U.S. senator. Democratic hold. | ▌Y Henry M. Jackson (Democratic) 57.4% ▌Payson Peterson (Republican) 42.6% |
| Washington 3 | Martin F. Smith | Democratic | 1932 | Incumbent re-elected. | ▌Y Martin F. Smith (Democratic) 55.3% ▌Russell V. Mack (Republican) 44.5% ▌Henry P. Huff (Communist) 0.2% |
| Washington 4 | Knute Hill | Democratic | 1932 | Incumbent re-elected. | ▌Y Knute Hill (Democratic) 51.3% ▌Frank Miller (Republican) 48.7% |
| Washington 5 | Charles H. Leavy | Democratic | 1936 | Incumbent re-elected. | ▌Y Charles H. Leavy (Democratic) 55.5% ▌Walt Horan (Republican) 44.5% |
| Washington 6 | John M. Coffee | Democratic | 1936 | Incumbent re-elected. | ▌Y John M. Coffee (Democratic) 62.8% ▌Paul A. Preus (Republican) 37.2% |

## West Virginia

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| West Virginia 1 | A. C. Schiffler | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Robert L. Ramsay (Democratic) 53.2% ▌A. C. Schiffler (Republican) 46.8% |
| West Virginia 2 | Jennings Randolph | Democratic | 1932 | Incumbent re-elected. | ▌Y Jennings Randolph (Democratic) 57.5% ▌H. Sharp Summers (Republican) 42.5% |
| West Virginia 3 | Andrew Edmiston Jr. | Democratic | 1933 (special) | Incumbent re-elected. | ▌Y Andrew Edmiston Jr. (Democratic) 56.6% ▌H. Roy Waugh (Republican) 43.4% |
| West Virginia 4 | George William Johnson | Democratic | 1932 | Incumbent re-elected. | ▌Y George William Johnson (Democratic) 52.7% ▌Harry O. Hiteshew (Republican) 47.3% |
| West Virginia 5 | John Kee | Democratic | 1932 | Incumbent re-elected. | ▌Y John Kee (Democratic) 62.9% ▌Hartley Sanders (Republican) 37.1% |
| West Virginia 6 | Joe L. Smith | Democratic | 1928 | Incumbent re-elected. | ▌Y Joe L. Smith (Democratic) 61.7% ▌R. E. O'Connor (Republican) 38.3% |

## Wisconsin

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Wisconsin 1 | Stephen Bolles | Republican | 1938 | Incumbent re-elected. | ▌Y Stephen Bolles (Republican) 55.8% ▌Stanley W. Slagg (Progressive) 22.8% ▌Jacob M. Weisman (Democratic) 21.4% |
| Wisconsin 2 | Charles Hawks Jr. | Republican | 1938 | Incumbent lost re-election. Progressive gain. | ▌Y Harry Sauthoff (Progressive) 44.2% ▌Charles Hawks Jr. (Republican) 42.5% ▌Thomas R. Brooks (Democratic) 13.3% |
| Wisconsin 3 | Harry W. Griswold | Republican | 1938 | Incumbent died July 4, 1939. Republican hold. | ▌Y William H. Stevenson (Republican) 46.0% ▌Gardner R. Withrow (Progressive) 44.0% ▌George T. Doherty (Democratic) 10.0% |
| Wisconsin 4 | John C. Schafer | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y Thad F. Wasielewski (Democratic) 35.6% ▌Leonard C. Fons (Progressive) 32.8% ▌John C. Schafer (Republican) 31.5% |
| Wisconsin 5 | Lewis D. Thill | Republican | 1938 | Incumbent re-elected. | ▌Y Lewis D. Thill (Republican) 44.4% ▌James M. Pasch (Progressive) 32.8% ▌Francis T. Murphy (Democratic) 22.8% |
| Wisconsin 6 | Frank B. Keefe | Republican | 1938 | Incumbent re-elected. | ▌Y Frank B. Keefe (Republican) 57.4% ▌Jacob A. Fessler (Democratic) 25.9% ▌Walter D. Corrigan Sr. (Progressive) 16.7% |
| Wisconsin 7 | Reid F. Murray | Republican | 1938 | Incumbent re-elected. | ▌Y Reid F. Murray (Republican) 51.6% ▌Gerald J. Boileau (Progressive) 35.7% ▌Wallace A. Bloedorn (Democratic) 12.7% |
| Wisconsin 8 | Joshua L. Johns | Republican | 1938 | Incumbent re-elected. | ▌Y Joshua L. Johns (Republican) 55.8% ▌Michael F. Kresky (Progressive) 44.2% |
| Wisconsin 9 | Merlin Hull | Progressive | 1934 | Incumbent re-elected. | ▌Y Merlin Hull (Progressive) 52.8% ▌John R. Nygaard (Republican) 41.4% ▌James E. Hughes (Democratic) 5.9% |
| Wisconsin 10 | Bernard J. Gehrmann | Progressive | 1934 | Incumbent re-elected. | ▌Y Bernard J. Gehrmann (Progressive) 48.0% ▌Peter Van Nostrand (Republican) 35.7% ▌John G. Green (Democratic) 16.3% |

## Wyoming

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Wyoming at-large | Frank O. Horton | Republican | 1938 | Incumbent lost re-election. Democratic gain. | ▌Y John J. McIntyre (Democratic) 53.4% ▌Frank O. Horton (Republican) 46.5% ▌Lee R. White (Progressive) 0.1% |

## Non-voting delegates

After two cycles of electing its delegate in September, Alaska Territory returned to a November election.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Delegate | Party | First elected | Results | Candidates |
| Alaska Territory at-large | Anthony Dimond | Democratic | 1932 | Incumbent re-elected. | ▌Y Anthony Dimond (Democratic) 77.2% ▌Cash Cole (Republican) 22.8% |