# 1920 United States Senate elections

The 1920 United States Senate elections were elections for the United States Senate that coincided with the presidential election of Warren G. Harding. The 32 seats of Class 3 were contested in regular elections, and special elections were held to fill vacancies. Democrat Woodrow Wilson's unpopularity allowed Republicans to win races across the country, winning ten seats from the Democrats and providing them with an overwhelming 59-to-37 majority. The Republican landslide was so vast that Democrats lost over half of the contested seats this year and failed to win a single race outside the South. In fact, this is the most recent occasion where every race decided by under 10 points all voted for the same party, showcasing the sheer strength of Republicans' performance in this election.
Since the passage of the Seventeenth Amendment, these elections were the closest in which the winning party in almost every Senate election mirrored the winning party for their state in the presidential election, with Kentucky being the only Senate race not to mirror their presidential result. No other Senate election cycle in a presidential year would come close to repeating this feat until 2016, in which the result of every Senate race mirrored the corresponding state's result in the presidential election. Coincidentally, that election cycle involved the same class of Senate seats, Class 3. This is also one of only five occasions where 10 or more Senate seats changed party in an election, with the other occasions being in 1932, 1946, 1958, and 1980.
As of 2025, the 59 seats held after this election cycle remains the highest number of seats that the Republican Party has held as the result of an election cycle. This number rose to 60, the highest number of seats the Republicans have ever held, after Democrat senator Josiah O. Wolcott of Delaware accepted an offer from Republican governor William D. Denney to become Chancellor of the Delaware Court of Chancery, allowing Denney to name Republican T. Coleman du Pont to replace Wolcott, a seat du Pont held until the next election, in which both a special election was held for the remainder of the term and a regular election was held as the seat was normally up then, both of which du Pont lost narrowly to Democrat Thomas F. Bayard Jr. In addition, the 22-seat majority is the largest majority that the Republicans have achieved in any election since.

## Gains, losses, and holds
### Retirements

Two Republicans and three Democrats retired instead of seeking re-election. One Democrat retired instead of seeking election to finish the unexpired term.
| State | Senator | Replaced by |
| Alabama (special) | B. B. Comer | J. Thomas Heflin |
| Colorado | Charles S. Thomas | Samuel D. Nicholson |
| Illinois | Lawrence Y. Sherman | William B. McKinley |
| Louisiana | Edward J. Gay | Edwin S. Broussard |
| Ohio | Warren G. Harding | Frank B. Willis |
| South Dakota | Edwin S. Johnson | Peter Norbeck |

### Defeats

Ten Democrats and one Republican sought re-election but lost in the primary or general election.
| State | Senator | Replaced by |
| Arizona | Marcus A. Smith | Ralph H. Cameron |
| Arkansas | William F. Kirby | Thaddeus H. Caraway |
| California | James D. Phelan | Samuel M. Shortridge |
| Georgia | Hoke Smith | Thomas E. Watson |
| Idaho | John F. Nugent | Frank R. Gooding |
| Kentucky | J. C. W. Beckham | Richard P. Ernst |
| Maryland | John W. Smith | Ovington Weller |
| Nevada | Charles Henderson | Tasker Oddie |
| North Dakota | Asle Gronna | Edwin F. Ladd |
| Oklahoma | Thomas Gore | John W. Harreld |
| Oregon | George E. Chamberlain | Robert N. Stanfield |

### Post election changes

| State | Senator | Replaced by |
| Delaware | Josiah O. Wolcott | T. Coleman du Pont |
| New Mexico | Albert B. Fall | Holm O. Bursum |
| Georgia | Thomas E. Watson | Rebecca L. Felton |
| Pennsylvania (class 1) | Philander C. Knox | William E. Crow |
| Pennsylvania (class 1) | William E. Crow | David A. Reed |
| Pennsylvania (class 3) | Boies Penrose | George Wharton Pepper |
| Iowa | William S. Kenyon | Charles A. Rawson |
| Michigan | Truman H. Newberry | James J. Couzens |

## Change in composition
### Before the elections

| | | D$_1$ | D$_2$ | D$_3$ | D$_4$ | D$_5$ | D$_6$ | D$_7$ | D$_8$ |
| D$_{18}$ | D$_{17}$ | D$_{16}$ | D$_{15}$ | D$_{14}$ | D$_{13}$ | D$_{12}$ | D$_{11}$ | D$_{10}$ | D$_9$ |
| D$_{19}$ | D$_{20}$ | D$_{21}$ | D$_{22}$ | D$_{23}$ | D$_{24}$ | D$_{25}$ | D$_{26}$ | D$_{27}$ | D$_{28}$ |
| D$_{38}$ Ky. Ran | D$_{37}$ Idaho Ran | D$_{36}$ Ga. Ran | D$_{35}$ Fla. Ran | D$_{34}$ Colo. Retired | D$_{33}$ Calif. Ran | D$_{32}$ Ark. Ran | D$_{31}$ Ariz. Ran | D$_{30}$ Ala. (sp) Retired | D$_{29}$ Ala. (reg) Ran |
| D$_{39}$ La. Retired | D$_{40}$ Md. Ran | D$_{41}$ Nev. Ran | D$_{42}$ N.C. Ran | D$_{43}$ Okla. Ran | D$_{44}$ Ore. Ran | D$_{45}$ S.C. Ran | D$_{46}$ S.D. Ran | D$_{47}$ Va. (sp) Ran | R$_{49}$ Wisc. Ran |
| R$_{49}$ Wisc. Ran |||||||||
| R$_{39}$ Kan. Ran | R$_{40}$ Mo. Ran | R$_{41}$ N.H. Ran | R$_{42}$ N.Y. Ran | R$_{43}$ N.D. Ran | R$_{44}$ Ohio Retired | R$_{45}$ Pa. Ran | R$_{46}$ Utah Ran | R$_{47}$ Vt. Ran | R$_8$ Wash. Ran |
| R$_{38}$ Iowa Ran | R$_{37}$ Ind. Retired | R$_{36}$ Ill. Ran | R$_{35}$ Conn. Ran | R$_{34}$ | R$_{33}$ | R$_{32}$ | R$_{31}$ | R$_{30}$ | R$_{29}$ |
| R$_{19}$ | R$_{20}$ | R$_{21}$ | R$_{22}$ | R$_{23}$ | R$_{24}$ | R$_{25}$ | R$_{26}$ | R$_{27}$ | R$_{28}$ |
| R$_{18}$ | R$_{17}$ | R$_{16}$ | R$_{15}$ | R$_{14}$ | R$_{13}$ | R$_{12}$ | R$_{11}$ | R$_{10}$ | R$_9$ |
| | | R$_1$ | R$_2$ | R$_3$ | R$_4$ | R$_5$ | R$_6$ | R$_7$ | R$_8$ |

### Elections result

| | | D$_1$ | D$_2$ | D$_3$ | D$_4$ | D$_5$ | D$_6$ | D$_7$ | D$_8$ |
| D$_{18}$ | D$_{17}$ | D$_{16}$ | D$_{15}$ | D$_{14}$ | D$_{13}$ | D$_{12}$ | D$_{11}$ | D$_{10}$ | D$_9$ |
| D$_{19}$ | D$_{20}$ | D$_{21}$ | D$_{22}$ | D$_{23}$ | D$_{24}$ | D$_{25}$ | D$_{26}$ | D$_{27}$ | D$_{28}$ |
| R$_{59}$ S.D. Gain | D$_{37}$ Va. (sp) Elected | D$_{36}$ S.C. Re-elected | D$_{35}$ N.C. Re-elected | D$_{34}$ La. Hold | D$_{33}$ Ga. Hold | D$_{32}$ Fla. Re-elected | D$_{31}$ Ark. Hold | D$_{30}$ Ala. (sp) Hold | D$_{29}$ Ala. (reg) Re-elected |
| R$_{58}$ Ore. Gain | R$_{57}$ Okla. Gain | R$_{56}$ Nev. Gain | R$_{55}$ Md. Gain | R$_{54}$ Ky. Gain | R$_{53}$ Idaho Gain | R$_{52}$ Colo. Gain | R$_{51}$ Calif. Gain | R$_{50}$ Ariz. Gain | R$_{49}$ Wisc. Re-elected |
| R$_{49}$ Wisc. Re-elected |||||||||
| R$_{39}$ Kan. Re-elected | R$_{40}$ Mo. Re-elected | R$_{41}$ N.H. Re-elected | R$_{42}$ N.Y. Re-elected | R$_{43}$ N.D. Hold | R$_{44}$ Ohio Hold | R$_{45}$ Pa. Re-elected | R$_{46}$ Utah Re-elected | R$_{47}$ Vt. Re-elected | R$_{48}$ Wash. Re-elected |
| R$_{38}$ Iowa Re-elected | R$_{37}$ Ind. Re-elected | R$_{36}$ Ill. Hold | R$_{35}$ Conn. Re-elected | R$_{34}$ | R$_{33}$ | R$_{32}$ | R$_{31}$ | R$_{30}$ | R$_{29}$ |
| R$_{19}$ | R$_{20}$ | R$_{21}$ | R$_{22}$ | R$_{23}$ | R$_{24}$ | R$_{25}$ | R$_{26}$ | R$_{27}$ | R$_{28}$ |
| R$_{18}$ | R$_{17}$ | R$_{16}$ | R$_{15}$ | R$_{14}$ | R$_{13}$ | R$_{12}$ | R$_{11}$ | R$_{10}$ | R$_9$ |
| | | R$_1$ | R$_2$ | R$_3$ | R$_4$ | R$_5$ | R$_6$ | R$_7$ | R$_8$ |
| Key | D$_#$ Democratic R$_#$ Republican |

## Race summary
### Special elections during the 66th Congress

In these special elections, the winner was seated during 1920 or before March 4, 1921; ordered by election date.
| State | Incumbent | Incumbent | Incumbent | Results | Candidates |
| State | Senator | Party | Electoral history | Results | Candidates |
| Alabama (Class 2) | B. B. Comer | Democratic | 1920 (appointed) | Interim appointee retired. New senator elected November 2, 1920. Democratic hold. | ▌Y J. Thomas Heflin (Democratic) 69.3% ▌C. P. Lunsford (Republican) 29.5% ▌W. H. Chichester (Socialist) 1.2% |
| Virginia (Class 2) | Carter Glass | Democratic | 1920 (appointed) | Interim appointee elected November 2, 1920. | ▌Y Carter Glass (Democratic) 91.3% ▌J. R. Pollard (Republican) 8.7% |

### Elections leading to the 67th Congress

In these general elections, the winners were elected for the term beginning March 4, 1921; ordered by state.
All of the elections involved the Class 3 seats.
| State | Incumbent | Incumbent | Incumbent | Results | Candidates |
| State | Senator | Party | Electoral history | Results | Candidates |
| Alabama | Oscar Underwood | Democratic | 1914 | Incumbent re-elected. | ▌Y Oscar Underwood (Democratic) 66.1% ▌L. H. Reynolds (Republican) 33.1% ▌A. M. Forsman (Socialist) 0.8% |
| Arizona | Marcus A. Smith | Democratic | 1912 (new state) 1914 | Incumbent lost re-election. Republican gain. | ▌Y Ralph H. Cameron (Republican) 55.2% ▌Marcus A. Smith (Democratic) 44.8% |
| Arkansas | William F. Kirby | Democratic | 1916 (special) | Incumbent lost renomination. Democratic hold. | ▌Y Thaddeus H. Caraway (Democratic) 65.9% ▌Charles F. Cole (Republican) 34.1% |
| California | James D. Phelan | Democratic | 1914 | Incumbent lost re-election. Republican gain. | ▌Y Samuel M. Shortridge (Republican) 49.0% ▌James D. Phelan (Democratic) 40.7% ▌James S. Edwards (Prohibition) 6.3% ▌Elvina S. Beals (Socialist) 4.0% |
| Colorado | Charles S. Thomas | Democratic | 1913 (special) 1914 | Incumbent lost re-election as a Nationalist. Republican gain. | ▌Y Samuel D. Nicholson (Republican) 54.5% ▌Tully Scot (Democratic) 39.3% ▌G. F. Stevens (Farmer–Labor) 3.1% ▌Charles S. Thomas (National) 3.0% |
| Connecticut | Frank B. Brandegee | Republican | 1905 (special) 1909 1914 | Incumbent re-elected. | ▌Y Frank B. Brandegee (Republican) 59.3% ▌Augustine Lonergan (Democratic) 36.1% ▌Martin F. Plunkett (Socialist) 2.8% Others ▌Emil L. G. Hohenthal (Prohibition) 0.8% ▌Josephine B. Bennett (Farmer–Labor) 0.6% ▌Charles J. Backofen (Socialist Labor) 0.4% |
| Florida | Duncan U. Fletcher | Democratic | 1909 (appointed) 1909 (special) 1914 | Incumbent re-elected. | ▌Y Duncan U. Fletcher (Democratic) 69.5% ▌John Moses Cheney (Republican) 26.0% ▌M. J. Martin (Socialist) 2.5% ▌G. A. Klock (White Republican) 2.0% |
| Georgia | Hoke Smith | Democratic | 1911 (special) 1914 | Incumbent lost renomination. Democratic hold. | ▌Y Thomas E. Watson (Democratic) 94.9% ▌Harvey S. Edwards (Independent) 5.1% |
| Idaho | John F. Nugent | Democratic | 1918 (appointed) 1918 (special) | Incumbent lost re-election. Republican gain. Incumbent resigned January 14, 1921 to give successor preferential seniority. Winner appointed January 15, 1921. | ▌Y Frank R. Gooding (Republican) 54.1% ▌John F. Nugent (Democratic) 45.9% |
| Illinois | Lawrence Y. Sherman | Republican | 1913 (special) 1914 | Incumbent retired. Republican hold. | ▌Y William B. McKinley (Republican) 66.8% ▌Peter A. Waller (Democratic) 26.8% ▌Gustave T. Fraenckel (Socialist) 3.2% Others ▌John Fitzpatrick (Farmer–Labor) 2.4% ▌Frank B. Vennum (Prohibition) 0.5% ▌Joseph B. Moody (Socialist Labor) 0.15% |
| Indiana | James E. Watson | Republican | 1916 (special) | Incumbent re-elected. | ▌Y James E. Watson (Republican) 54.6% ▌Thomas Taggart (Democratic) 41.1% Others ▌Francis M. Wampler (Socialist) 1.9% ▌Francis J. Dillon (Farmer–Labor) 1.3% ▌Oulla Bayhinger (Prohibition) 1.1% |
| Iowa | Albert B. Cummins | Republican | 1908 (special) 1914 | Incumbent re-elected. | ▌Y Albert B. Cummins (Republican) 61.4% ▌Claude R. Porter (Democratic) 37.4% Others ▌H. W. Cowles (Farmer–Labor) 1.0% ▌Arthur S. Dowler (Socialist Labor) 0.1% |
| Kansas | Charles Curtis | Republican | 1907 (special) 1907 1913 (lost) 1914 | Incumbent re-elected. | ▌Y Charles Curtis (Republican) 64.0% ▌George H. Hodges (Democratic) 33.4% ▌Dan Beedy (Socialist) 2.6% |
| Kentucky | J. C. W. Beckham | Democratic | 1914 | Incumbent lost re-election. Republican gain. | ▌Y Richard P. Ernst (Republican) 50.3% ▌J. C. W. Beckham (Democratic) 49.7% |
| Louisiana | Edward J. Gay | Democratic | 1918 (special) | Incumbent retired. Democratic hold. | ▌Y Edwin S. Broussard (Democratic) Unopposed |
| Maryland | John W. Smith | Democratic | 1908 (special) 1908 1914 | Incumbent lost re-election. Republican gain. | ▌Y Ovington Weller (Republican) 47.3% ▌John W. Smith (Democratic) 43.3% ▌G. D. Iverson Jr. (Independent) 5.4% Others ▌William A. Toole (Socialist) 1.7% ▌William A. Hawkins (Independent) 1.7% ▌Frank N. H. Lang (Labor) 0.6% |
| Missouri | Selden P. Spencer | Republican | 1918 (special) | Incumbent re-elected. | ▌Y Selden P. Spencer (Republican) 53.7% ▌Breckinridge Long (Democratic) 44.5% |
| Nevada | Charles Henderson | Democratic | 1918 (appointed) 1918 (special) | Incumbent lost re-election. Republican gain. | ▌Y Tasker Oddie (Republican) 42.1% ▌Charles Henderson (Democratic) 37.9% ▌Anne Martin (Independent) 18.2% |
| New Hampshire | George H. Moses | Republican | 1918 (special) | Incumbent re-elected. | ▌Y George H. Moses (Republican) 57.7% ▌Raymond B. Stevens (Democratic) 41.6% ▌William H. Wilkins (Socialist) 0.6% |
| New York | James W. Wadsworth Jr. | Republican | 1914 | Incumbent re-elected. | ▌Y James W. Wadsworth Jr. (Republican) 52.4% ▌Harry C. Walker (Democratic) 32.9% ▌Ella A. Boole (Prohibition) 7.8% ▌Jacob Panken (Socialist) 5.8% |
| North Carolina | Lee S. Overman | Democratic | 1903 1909 1914 | Incumbent re-elected. | ▌Y Lee S. Overman (Democratic) 57.5% ▌A. E. Holton (Republican) 42.5% |
| North Dakota | Asle Gronna | Republican | 1911 (special) 1914 | Incumbent lost renomination. Republican hold. | ▌Y Edwin F. Ladd (Republican) 59.8% ▌Hector H. Perry (Democratic) 40.2% |
| Ohio | Warren G. Harding | Republican | 1914 | Incumbent retired to run for U.S. President. Republican hold. Incumbent resigned January 13, 1921, having won the Presidency. Winner appointed January 14, 1921. | ▌Y Frank B. Willis (Republican) 59.1% ▌William Alexander Julian (Democratic) 40.8% |
| Oklahoma | Thomas Gore | Democratic | 1907 (new state) 1909 1914 | Incumbent lost renomination. Republican gain. | ▌Y John W. Harreld (Republican) 50.6% ▌Scott Ferris (Democratic) 44.5% ▌A. A. Bagwell (Socialist) 4.8% |
| Oregon | George E. Chamberlain | Democratic | 1909 1914 | Incumbent lost re-election. Republican gain. | ▌Y Robert N. Stanfield (Republican) 50.7% ▌George E. Chamberlain (Democratic) 43.5% |
| Pennsylvania | Boies Penrose | Republican | 1897 1903 1909 1914 | Incumbent re-elected. | ▌Y Boies Penrose (Republican) 59.9% ▌John A. Farrell (Democratic) 27.2% ▌Leah C. Marion (Prohibition) 7.4% |
| South Carolina | Ellison D. Smith | Democratic | 1909 1914 | Incumbent re-elected. | ▌Y Ellison D. Smith (Democratic) Unopposed |
| South Dakota | Edwin S. Johnson | Democratic | 1914 | Incumbent retired. Republican gain. | ▌Y Peter Norbeck (Republican) 50.1% ▌Tom Ayres (Independent) 24.1% ▌U. S. G. Cherry (Democratic) 20.0% ▌Richard Olsen Richards (Independent) 5.5% |
| Utah | Reed Smoot | Republican | 1903 1909 1914 | Incumbent re-elected. | ▌Y Reed Smoot (Republican) 56.6% ▌Milton H. Welling (Democratic) 38.5% ▌J. Alex Beven (Socialist Farmer Labor) 4.9% |
| Vermont | William P. Dillingham | Republican | 1900 (special) 1902 1908 1914 | Incumbent re-elected. | ▌Y William P. Dillingham (Republican) 78.0% ▌Howard E. Shaw (Democratic) 21.9% |
| Washington | Wesley L. Jones | Republican | 1909 1914 | Incumbent re-elected. | ▌Y Wesley L. Jones (Republican) 56.4% ▌C. L. France (Farmer–Labor) 25.4% ▌George F. Cotterill (Democratic) 17.8% |
| Wisconsin | Irvine Lenroot | Republican | 1918 (special) | Incumbent re-elected. | ▌Y Irvine Lenroot (Republican) 41.6% ▌James Thompson (Independent) 34.7% ▌Paul S. Reinsch (Democratic) 13.2% ▌Frank J. Weber (Socialist) 9.8% ▌Clyde D. Mead (Prohibition) 0.8% |

## Closest races

Nine races had a margin of victory under 10%:
| State | Party of winner | Margin |
| Kentucky | Republican (flip) | 0.6% |
| Maryland | Republican (flip) | 4.0% |
| Nevada | Republican (flip) | 4.2% |
| Oklahoma | Republican (flip) | 6.1% |
| Wisconsin | Republican | 6.9% |
| Oregon | Republican (flip) | 7.2% |
| Idaho | Republican (flip) | 8.2% |
| California | Republican (flip) | 8.3% |
| Missouri | Republican | 9.2% |
The tipping point state is Colorado with a margin of 15.2%.

## Alabama
### Alabama (regular)

Alabama election :
| Party | Party | Candidate | Votes | % |
| | Democratic | Oscar Underwood (Incumbent) | 154,664 | 66.10% |
| | Republican | L. H. Reynolds | 77,337 | 33.05% |
| | Socialist | A. M. Forsman | 1,984 | 0.85% |
| Majority | Majority | Majority | 77,327 | 33.05% |
| Turnout | Turnout | Turnout | 233,985 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

### Alabama (special)

Alabama special election :
| Party | Party | Candidate | Votes | % |
| | Democratic | J. Thomas Heflin | 160,680 | 69.27% |
| | Republican | C. P. Lunsford | 68,460 | 29.51% |
| | Socialist | W. H. Chichester | 2,820 | 1.22% |
| Majority | Majority | Majority | 92,220 | 39.76% |
| Turnout | Turnout | Turnout | 231,960 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Arizona

Arizona election :
| Party | Party | Candidate | Votes | % |
| | Republican | Ralph H. Cameron | 35,893 | 55.17% |
| | Democratic | Marcus A. Smith (Incumbent) | 29,169 | 44.83% |
| Majority | Majority | Majority | 6,724 | 10.34% |
| Turnout | Turnout | Turnout | 65,062 | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

## Arkansas

Arkansas election :
| Party | Party | Candidate | Votes | % |
| | Democratic | Thaddeus H. Caraway | 126,477 | 65.92% |
| | Republican | Charles F. Cole | 65,381 | 34.08% |
| Majority | Majority | Majority | 61,096 | 31.84% |
| Turnout | Turnout | Turnout | 191,858 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## California

California election :
| Party | Party | Candidate | Votes | % |
| | Republican | Samuel M. Shortridge | 447,835 | 49.01% |
| | Democratic | James D. Phelan (Incumbent) | 371,580 | 40.67% |
| | Prohibition | James S. Edwards | 57,768 | 6.32% |
| | Socialist | Elvina S. Beals | 36,545 | 4.00% |
| Majority | Majority | Majority | 76,255 | 8.34% |
| Turnout | Turnout | Turnout | 913,728 | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

## Colorado

Colorado election :
| Party | Party | Candidate | Votes | % |
| | Republican | Samuel D. Nicholson | 156,577 | 54.52% |
| | Democratic | Tully Scott | 112,890 | 39.31% |
| | Farmer–Labor | G. F. Stevens | 9,041 | 3.15% |
| | National | Charles S. Thomas (incumbent) | 8,665 | 3.02% |
| Majority | Majority | Majority | 43,687 | 15.21% |
| Turnout | Turnout | Turnout | 287,173 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Connecticut

Connecticut election :
| Party | Party | Candidate | Votes | % |
| | Republican | Frank B. Brandegee (Incumbent) | 216,792 | 59.36% |
| | Democratic | Augustine Lonergan | 131,824 | 36.10% |
| | Socialist | Martin F. Plunkett | 10,118 | 2.77% |
| | Prohibition | Emil L. G. Hohenthal | 2,892 | 0.79% |
| | Farmer–Labor | Josephine B. Bennett | 2,076 | 0.57% |
| | Socialist Labor | Charles J. Backofen | 1,486 | 0.41% |
| Majority | Majority | Majority | 84,968 | 23.26% |
| Turnout | Turnout | Turnout | 365,188 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Florida

Florida election :
| Party | Party | Candidate | Votes | % |
| | Democratic | Duncan U. Fletcher (Incumbent) | 98,957 | 69.50% |
| | Republican | John Moses Cheney | 37,065 | 26.03% |
| | Socialist | M. J. Martin | 3,525 | 2.48% |
| | White Republican | G. A. Klock | 2,847 | 2.00% |
| Majority | Majority | Majority | 61,892 | 43.47% |
| Turnout | Turnout | Turnout | 142,394 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Georgia

Georgia election :
| Party | Party | Candidate | Votes | % |
| | Democratic | Thomas E. Watson | 124,630 | 94.90% |
| | Pro-League Independent | Harry S. Edwards | 6,700 | 5.10% |
| Majority | Majority | Majority | 117930 | 89.80% |
| Turnout | Turnout | Turnout | 131330 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Idaho

Idaho election :
| Party | Party | Candidate | Votes | % |
| | Republican | Frank R. Gooding | 75,985 | 54.08% |
| | Democratic | John F. Nugent (Incumbent) | 64,513 | 45.92% |
| Majority | Majority | Majority | 11,472 | 8.16% |
| Turnout | Turnout | Turnout | 140,498 | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

## Illinois

Illinois election :
| Party | Party | Candidate | Votes | % |
| | Republican | William B. McKinley | 1,381,384 | 66.83% |
| | Democratic | Peter A. Waller | 554,372 | 26.82% |
| | Socialist | Gustave T. Fraenckel | 66,463 | 3.22% |
| | Farmer–Labor | John Fitzpatrick | 50,749 | 2.46% |
| | Prohibition | Frank B. Vennum | 10,186 | 0.49% |
| | Socialist Labor | Joseph B. Moody | 3,107 | 0.15% |
| | Single Tax | George Dodd Carrington Jr. | 784 | 0.04% |
| Majority | Majority | Majority | 827,012 | 40.01% |
| Turnout | Turnout | Turnout | 2,067,045 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Indiana

Indiana election :
| Party | Party | Candidate | Votes | % |
| | Republican | James Eli Watson (Incumbent) | 681,851 | 54.57% |
| | Democratic | Thomas Taggart | 514,191 | 41.15% |
| | Socialist | Francis M. Wampler | 23,395 | 1.87% |
| | Farmer–Labor | Francis J. Dillon | 16,804 | 1.34% |
| | Prohibition | Culla Bayhinger | 13,323 | 1.07% |
| Majority | Majority | Majority | 167,660 | 13.42% |
| Turnout | Turnout | Turnout | 1,249,564 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Iowa

Iowa election :
| Party | Party | Candidate | Votes | % |
| | Republican | Albert B. Cummins (Incumbent) | 528,499 | 61.42% |
| | Democratic | Claude R. Porter | 322,015 | 37.42% |
| | Farmer–Labor | H. W. Cowles | 9,020 | 1.05% |
| | Socialist Labor | Arthur S. Dowler | 933 | 0.11% |
| Majority | Majority | Majority | 206,484 | 24.00% |
| Turnout | Turnout | Turnout | 860,467 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Kansas

Kansas election :
| Party | Party | Candidate | Votes | % |
| | Republican | Charles Curtis (Incumbent) | 327,072 | 64.01% |
| | Democratic | George H. Hodges | 170,443 | 33.36% |
| | Socialist | Dan Beedy | 13,417 | 2.63% |
| Majority | Majority | Majority | 156,629 | 30.65% |
| Turnout | Turnout | Turnout | 510,932 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Kentucky

Kentucky election :
| Party | Party | Candidate | Votes | % |
| | Republican | Richard P. Ernst | 454,226 | 50.28% |
| | Democratic | J. C. W. Beckham (Incumbent) | 449,244 | 49.72% |
| Majority | Majority | Majority | 4,982 | 0.56% |
| Turnout | Turnout | Turnout | 903,470 | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

## Louisiana

1920 United States Senate Democratic primary :
| Party | Party | Candidate | Votes | % |
| | Democratic | Edwin S. Broussard | 49,718 | 45.74% |
| | Democratic | Jared Y. Sanders Sr. | 43,425 | 39.95% |
| | Democratic | Donelson Caffery III | 15,563 | 14.32% |
| Total votes | Total votes | Total votes | 108,706 | 100.00% |
Louisiana election :
| Party | Party | Candidate | Votes | % |
| | Democratic | Edwin S. Broussard | 94,944 | 100.00% |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Maryland

Maryland election :
| Party | Party | Candidate | Votes | % |
| | Republican | Ovington Weller | 184,999 | 47.29% |
| | Democratic | John Walter Smith (Incumbent) | 169,200 | 43.25% |
| | Independent | G. D. Iverson Jr. | 21,345 | 5.46% |
| | Socialist | William A. Toole | 6,559 | 1.68% |
| | Independent | William A. Hawkins | 6,538 | 1.67% |
| | Labor | Frank N. H. Lang | 2,569 | 0.66% |
| Majority | Majority | Majority | 15,799 | 4.04% |
| Turnout | Turnout | Turnout | 391,210 | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

## Missouri

Missouri election :
| Party | Party | Candidate | Votes | % |
| | Republican | Selden P. Spencer (Incumbent) | 711,161 | 53.65% |
| | Democratic | Breckinridge Long | 589,498 | 44.47% |
| | Socialist | Elias F. Hodges | 20,002 | 1.51% |
| | Farmer–Worker | W. J. Mallett | 3,158 | 0.24% |
| | Socialist Labor | Andrew Trudell | 1,675 | 0.13% |
| Majority | Majority | Majority | 121,663 | 9.18% |
| Turnout | Turnout | Turnout | 1,325,494 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Nevada

Nevada election :
| Party | Party | Candidate | Votes | % |
| | Republican | Tasker Oddie | 11,550 | 42.11% |
| | Democratic | Charles B. Henderson (Incumbent) | 10,402 | 37.93% |
| | Independent | Anne Henrietta Martin | 4,981 | 18.16% |
| | Socialist | James Jepson | 494 | 1.80% |
| Majority | Majority | Majority | 1148 | 5.18% |
| Turnout | Turnout | Turnout | 27,427 | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

## New Hampshire

New Hampshire election :
| Party | Party | Candidate | Votes | % |
| | Republican | George H. Moses (Incumbent) | 90,173 | 57.72% |
| | Democratic | Raymond Bartlett Stevens | 65,038 | 41.63% |
| | Socialist | William H. Wilkins | 1,004 | 0.64% |
| Majority | Majority | Majority | 25135 | 16.09% |
| Turnout | Turnout | Turnout | 156,215 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## New York

New York election :
| Party | Party | Candidate | Votes | % |
| | Republican | James Wolcott Wadsworth Jr. (Incumbent) | 1,434,393 | 52.36% |
| | Democratic | Harry C. Walker | 901,310 | 32.90% |
| | Socialist | Jacob Panken | 208,155 | 7.60% |
| | Prohibition | Ella A. Boole | 159,623 | 5.83% |
| | Farmer–Labor | Rose Schneiderman | 27,934 | 1.02% |
| | Socialist Labor | Harry Carlson | 7,822 | 0.29% |
| Majority | Majority | Majority | 533,083 | 19.46% |
| Turnout | Turnout | Turnout | 2,739,237 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## North Carolina

North Carolina election :
| Party | Party | Candidate | Votes | % |
| | Democratic | Lee Slater Overman (Incumbent) | 310,504 | 57.52% |
| | Republican | A. E. Holton | 229,343 | 42.48% |
| Majority | Majority | Majority | 81,161 | 15.04% |
| Turnout | Turnout | Turnout | 539,847 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## North Dakota

North Dakota election :
| Party | Party | Candidate | Votes | % |
| | Republican | Edwin F. Ladd | 130,614 | 59.61% |
| | Democratic | H. H. Perry | 88,495 | 40.39% |
| Majority | Majority | Majority | 42,109 | 19.22% |
| Turnout | Turnout | Turnout | 219,109 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Ohio

Ohio election :
| Party | Party | Candidate | Votes | % |
| | Republican | Frank B. Willis | 1,134,953 | 59.10% |
| | Democratic | William Alexander Julian | 782,650 | 40.76% |
| | Independent | Henry B. Strong | 2,647 | 0.14% |
| Majority | Majority | Majority | 352,303 | 18.34% |
| Turnout | Turnout | Turnout | 1,920,250 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Oklahoma

Oklahoma election :
| Party | Party | Candidate | Votes | % |
| | Republican | John W. Harreld | 247,719 | 50.64% |
| | Democratic | Scott Ferris | 217,783 | 44.52% |
| | Socialist | A. A. Bagwell | 23,664 | 4.84% |
| Majority | Majority | Majority | 29,936 | 6.12% |
| Turnout | Turnout | Turnout | 489,166 | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

## Oregon

Oregon election :
| Party | Party | Candidate | Votes | % |
| | Republican | Robert N. Stanfield | 116,696 | 50.73% |
| | Democratic | George Earle Chamberlain (Incumbent) | 100,133 | 43.53% |
| | Socialist | Albert Slaughter | 6,949 | 3.02% |
| | Independent | Thomas A. Hayes | 4,456 | 1.94% |
| | Industrial Labor | C. H. Svenson | 1,782 | 0.77% |
| Majority | Majority | Majority | 16,563 | 7.20% |
| Turnout | Turnout | Turnout | 230,016 | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |

## Pennsylvania

General election results :
| Party | Party | Candidate | Votes | % |
| | Republican | Boies Penrose (Incumbent) | 1,067,989 | 59.94% |
| | Democratic | John A. Farrell | 484,362 | 27.18% |
| | Prohibition | Leah Cobb Marion | 132,610 | 7.44% |
| | Socialist | Birch Wilson | 67,316 | 3.78% |
| | Labor | Robert J. Wheeler | 27,401 | 1.54% |
| | Single Tax | Joseph E. Jennings | 2,110 | 0.12% |
| | None | Scattering | 55 | 0.00% |
| Majority | Majority | Majority | 583,627 | 32.76% |
| Turnout | Turnout | Turnout | 1,781,843 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## South Carolina

Democratic Primary Runoff :
| Candidate | Votes | % | ±% |
| Ellison D. Smith | 65,880 | 60.7 | +12.0 |
| George Warren | 42,735 | 39.3 | +8.5 |
South Carolina U.S. Senate Election, 1920 :
| Party | Party | Candidate | Votes | % |
| | Democratic | Ellison D. Smith (Incumbent) | 64,388 | 100.00% |
| | Independent | George Warren | 1 | 0.00% |
| Majority | Majority | Majority | 64387 | 100.00% |
| Turnout | Turnout | Turnout | 64389 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## South Dakota

South Dakota election :
| Party | Party | Candidate | Votes | % |
| | Republican | Peter Norbeck | 92,267 | 50.10% |
| | Independent | Tom Ayres | 44,309 | 24.06% |
| | Democratic | U. S. G. Cherry | 36,833 | 20.00% |
| | Independent | Richard Olsen Richards | 10,032 | 5.45% |
| | Independent | L. J. Manbeck | 738 | 0.40% |
| Majority | Majority | Majority | 47,958 | 26.04% |
| Turnout | Turnout | Turnout | 184,179 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Utah

Utah election :
| Party | Party | Candidate | Votes | % |
| | Republican | Reed Smoot (Incumbent) | 82,566 | 56.57% |
| | Democratic | Milton H. Welling | 56,280 | 38.56% |
| | Socialist | J. Alex Beven | 7,112 | 4.87% |
| Majority | Majority | Majority | 26,286 | 18.01% |
| Turnout | Turnout | Turnout | 145,958 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Vermont

1920 United States Senate election in Vermont :
| Party | Party | Candidate | Votes | % |
| | Republican | William P. Dillingham (Incumbent) | 69,650 | 78.02% |
| | Democratic | Howard E. Shaw | 19,580 | 21.93% |
| | None | Scattering | 41 | 0.05% |
| Majority | Majority | Majority | 50,070 | 56.09% |
| Total votes | Total votes | Total votes | 89,271 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Virginia (special)

Virginia special election :
| Party | Party | Candidate | Votes | % |
| | Democratic | Carter Glass (Incumbent) | 184,646 | 91.31% |
| | Republican | J. R. Pollard | 17,576 | 8.69% |
| Majority | Majority | Majority | 167070 | 82.62% |
| Total votes | Total votes | Total votes | 202,222 | |
| | Democratic hold | Democratic hold | Democratic hold | Democratic hold |

## Washington

Washington election :
| Party | Party | Candidate | Votes | % |
| | Republican | Wesley Livsey Jones (Incumbent) | 217,069 | 56.40% |
| | Farmer–Labor | Clemens J. France | 99,309 | 25.80% |
| | Democratic | George F. Cotterill | 68,488 | 17.80% |
| Majority | Majority | Majority | 117,760 | 30.60% |
| Turnout | Turnout | Turnout | 384,866 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |

## Wisconsin

Wisconsin election :
| Party | Party | Candidate | Votes | % |
| | Republican | Irvine Lenroot (Incumbent) | 281,576 | 41.58% |
| | Independent | James Thompson | 235,029 | 34.71% |
| | Democratic | Paul Samuel Reinsch | 89,265 | 13.18% |
| | Socialist | Frank J. Weber | 66,172 | 9.77% |
| | Prohibition | Clyde D. Mead | 5,107 | 0.75% |
| | None | Scattering | 3 | 0.00% |
| Majority | Majority | Majority | 46,547 | 6.87% |
| Turnout | Turnout | Turnout | 677,152 | |
| | Republican hold | Republican hold | Republican hold | Republican hold |