1920 United States Senate elections

1920 United States Senate elections

← 1918 November 2, 1920 1922 →
1921 (NM) →
34 of the 96 seats in the United States Senate 49 seats needed for a majority
Majority party Minority party   Leader Henry Cabot Lodge[a] Oscar Underwood Party Republican Democratic Leader since March 4, 1919 April 27, 1920 Leader's seat Massachusetts Alabama Seats before 49 47 Seats after 59 37 Seat change 10 10 Seats up 15 19 Races won 25 9
Results of the elections:      Democratic hold      Republican gain      Republican hold      No election
Majority Leader before election Henry Cabot Lodge[a] Republican Elected Majority Leader Henry Cabot Lodge[a] Republican

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 when 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.^[1] This is 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 2024, 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.

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

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

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

		D1	D2	D3	D4	D5	D6	D7	D8
D18	D17	D16	D15	D14	D13	D12	D11	D10	D9
D19	D20	D21	D22	D23	D24	D25	D26	D27	D28
D38 Ky. Ran	D37 Idaho Ran	D36 Ga. Ran	D35 Fla. Ran	D34 Colo. Retired	D33 Calif. Ran	D32 Ark. Ran	D31 Ariz. Ran	D30 Ala. (sp) Retired	D29 Ala. (reg) Ran
D39 La. Retired	D40 Md. Ran	D41 Nev. Ran	D42 N.C. Ran	D43 Okla. Ran	D44 Ore. Ran	D45 S.C. Ran	D46 S.D. Ran	D47 Va. (sp) Ran	R49 Wisc. Ran
Majority →
R39 Kan. Ran	R40 Mo. Ran	R41 N.H. Ran	R42 N.Y. Ran	R43 N.D. Ran	R44 Ohio Retired	R45 Pa. Ran	R46 Utah Ran	R47 Vt. Ran	R8 Wash. Ran
R38 Iowa Ran	R37 Ind. Retired	R36 Ill. Ran	R35 Conn. Ran	R34	R33	R32	R31	R30	R29
R19	R20	R21	R22	R23	R24	R25	R26	R27	R28
R18	R17	R16	R15	R14	R13	R12	R11	R10	R9
		R1	R2	R3	R4	R5	R6	R7	R8

		D1	D2	D3	D4	D5	D6	D7	D8
D18	D17	D16	D15	D14	D13	D12	D11	D10	D9
D19	D20	D21	D22	D23	D24	D25	D26	D27	D28
R59 S.D. Gain	D37 Va. (sp) Elected[b]	D36 S.C. Re-elected	D35 N.C. Re-elected	D34 La. Hold	D33 Ga. Hold	D32 Fla. Re-elected	D31 Ark. Hold	D30 Ala. (sp) Hold	D29 Ala. (reg) Re-elected
R58 Ore. Gain	R57 Okla. Gain	R56 Nev. Gain	R55 Md. Gain	R54 Ky. Gain	R53 Idaho Gain	R52 Colo. Gain	R51 Calif. Gain	R50 Ariz. Gain	R49 Wisc. Re-elected
Majority →
R39 Kan. Re-elected	R40 Mo. Re-elected	R41 N.H. Re-elected	R42 N.Y. Re-elected	R43 N.D. Hold	R44 Ohio Hold	R45 Pa. Re-elected	R46 Utah Re-elected	R47 Vt. Re-elected	R48 Wash. Re-elected
R38 Iowa Re-elected	R37 Ind. Re-elected	R36 Ill. Hold	R35 Conn. Re-elected	R34	R33	R32	R31	R30	R29
R19	R20	R21	R22	R23	R24	R25	R26	R27	R28
R18	R17	R16	R15	R14	R13	R12	R11	R10	R9
		R1	R2	R3	R4	R5	R6	R7	R8

Key	D# Democratic R# Republican

In these special elections, the winner was seated during 1920 or before March 4, 1921; ordered by election date.

State	Incumbent			Results	Candidates
	Senator	Party	Electoral history
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%

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			Results	Candidates
	Senator	Party	Electoral history
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%[2]
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%

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%.

1920 United States Senate election in Alabama

← 1914 November 2, 1920 1926 →

Nominee Oscar Underwood L. H. Reynolds Party Democratic Republican Popular vote 154,664 77,337 Percentage 66.10% 33.05%

County Results Underwood:      50–60%      60–70%      70–80%      80–90%      >90% Reynolds:      50–60%      60–70%

U.S. senator before election Oscar Underwood Democratic Elected U.S. senator Oscar Underwood Democratic

Alabama election^[3]

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			77,327	33.05%
Turnout			233,985
	Democratic hold

1920 United States Senate special election in Alabama

← 1918 November 2, 1920 1924 →

Nominee J. Thomas Heflin C. P. Lunsford Party Democratic Republican Popular vote 160,680 68,460 Percentage 69.27% 29.51%

County Results Heflin:      50–60%      60–70%      70–80%      80–90%      >90% Lunsford:      50–60%      60–70%

U.S. senator before election B. B. Comer Democratic Elected U.S. senator J. Thomas Heflin Democratic

Alabama special election^[3]

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			92,220	39.76%
Turnout			231,960
	Democratic hold

1920 United States Senate election in Arizona

← 1914 November 2, 1920 1926 →

Nominee Ralph H. Cameron Marcus A. Smith Party Republican Democratic Popular vote 35,893 29,169 Percentage 55.17% 44.83%

County results Cameron:      50–60%      60–70% Smith:      50–60%      60–70%

U.S. senator before election Marcus A. Smith Democratic Elected U.S. Senator Ralph H. Cameron Republican

Arizona election^[3]

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

1920 United States Senate election in Arkansas

← 1914 November 2, 1920 1926 →

Nominee Thaddeus H. Caraway Charles F. Cole Party Democratic Republican Popular vote 126,477 65,381 Percentage 65.92% 34.08%

County results Caraway:      50–60%      60–70%      70–80%      80–90% Cole:      50–60%      60–70%

U.S. senator before election William F. Kirby Democratic Elected U.S. Senator Thaddeus H. Caraway Democratic

Arkansas election^[3]

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

1920 United States Senate election in California

← 1914 November 2, 1920 1926 →

Nominee Samuel M. Shortridge James Duval Phelan James S. Edwards Party Republican Democratic Prohibition Popular vote 447,835 371,580 57,768 Percentage 49.01% 40.67% 6.32%

County results Shortridge:      40–50%      50–60%      60–70%      80–90% Phelan:      40–50%      50–60%      60–70%

U.S. senator before election James Duval Phelan Democratic Elected U.S. Senator Samuel Morgan Shortridge Republican

California election^[3]

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			76,255	8.34%
Turnout			913,728
	Republican gain from Democratic

1920 United States Senate election in Colorado

← 1914 November 2, 1920 1924 (special) →

Nominee Samuel D. Nicholson Tully Scott Party Republican Democratic Popular vote 157,577 112,890 Percentage 54.52% 39.31%

Results by county Nicholson:      40–50%      50–60%      60–70%      70–80% Scott:      40–50%

U.S. senator before election Charles S. Thomas Democratic Elected U.S. Senator Samuel D. Nicholson Republican

Colorado election^[3]

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			43,687	15.21%
Turnout			287,173
	Republican hold

1920 United States Senate election in Connecticut

← 1914 November 2, 1920 1926 →

Nominee Frank B. Brandegee Augustine Lonergan Party Republican Democratic Popular vote 216,792 131,824 Percentage 59.36% 36.10%

County results Municipality results Brandegee:      40-50%      50-60%      60-70%      70-80%      80-90%      90-100% Lonergan:      40–50%      50–60%      60-70%

U.S. senator before election Frank B. Brandegee Republican Elected U.S. Senator Frank B. Brandegee Republican

Connecticut election^[3]

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			84,968	23.26%
Turnout			365,188
	Republican hold

1920 United States Senate election in Florida

← 1914 November 2, 1920 1926 →

Nominee Duncan U. Fletcher John Moses Cheney Party Democratic Republican Popular vote 98,957 37,065 Percentage 69.50% 26.03%

County results Fletcher:      50-60%      60-70%      70-80%      80-90%      90-100%

U.S. senator before election Duncan U. Fletcher Democratic Elected U.S. Senator Duncan U. Fletcher Democratic

Florida election^[3]

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			61,892	43.47%
Turnout			142,394
	Democratic hold

1920 United States Senate election in Georgia

← 1914 November 2, 1920 1926 →

Nominee Thomas E. Watson Harry S. Edwards Party Democratic Independent Popular vote 124,630 6,700 Percentage 94.50% 5.10%

U.S. senator before election M. Hoke Smith Democratic Elected U.S. Senator Thomas E. Watson Democratic

Georgia election^[3]

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

1920 United States Senate election in Idaho

← 1914 November 2, 1920 1926 →

Nominee Frank R. Gooding John F. Nugent Party Republican Democratic Popular vote 75,985 64,513 Percentage 54.08% 45.92%

County results Gooding:      50-60%      60-70% Nugent:      50-60%      60-70%

U.S. senator before election John F. Nugent Democratic Elected U.S. Senator Frank R. Gooding Republican

Idaho election^[3]

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

1920 United States Senate election in Illinois

← 1914 November 2, 1920 1926 →

Nominee William B. McKinley Peter A. Waller Party Republican Democratic Popular vote 1,381,384 554,372 Percentage 66.83% 26.82%

Results by county McKinley:      40–50%      50–60%      60–70%      70–80%      80–90% Waller:      40–50%      50–60%

U.S. senator before election Lawrence Yates Sherman Republican Elected U.S. senator William B. McKinley Republican

Illinois election^[3]

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			827,012	40.01%
Turnout			2,067,045
	Republican hold

1920 United States Senate election in Indiana

← 1916 (special) November 2, 1920 1926 →

Nominee James E. Watson Thomas Taggart Party Republican Democratic Popular vote 681,851 514,191 Percentage 54.57% 41.15%

County results Watson:      40–50%      50–60%      60–70%      70–80% Taggart:      40–50%      50–60%      60–70%

U.S. senator before election James E. Watson Republican Elected U.S. Senator James E. Watson Republican

Indiana election^[3]

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			167,660	13.42%
Turnout			1,249,564
	Republican hold

1920 United States Senate election in Iowa

← 1914 November 2, 1920 1926 →

Nominee Albert B. Cummins Claude R. Porter Party Republican Democratic Popular vote 528,499 322,015 Percentage 61.42% 37.42%

County results Cummins:      50–60%      60–70%      70–80% Porter:      50–60%

U.S. senator before election Albert B. Cummins Republican Elected U.S. Senator Albert B. Cummins Republican

Iowa election^[3]

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			206,484	24.00%
Turnout			860,467
	Republican hold

1920 United States Senate election in Kansas

← 1914 November 2, 1920 1926 →

Nominee Charles Curtis George H. Hodges Party Republican Democratic Popular vote 327,072 170,443 Percentage 64.01% 33.36%

County results Curtis:      40–50%      50–60%      60–70%      70–80%

U.S. senator before election Charles Curtis Republican Elected U.S. Senator Charles Curtis Republican

Kansas election^[3]

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			156,629	30.65%
Turnout			510,932
	Republican hold

1920 United States Senate election in Kentucky

← 1914 November 2, 1920 1926 →

Nominee Richard P. Ernst J. C. W. Beckham Party Republican Democratic Popular vote 454,226 449,244 Percentage 50.28% 49.72%

County results Ernst:      50–60%      60–70%      70–80%      80–90%      >90% Beckham:      50–60%      60–70%      70–80%      80–90%

U.S. senator before election J. C. W. Beckham Democratic Elected U.S. Senator Richard P. Ernst Republican

Kentucky election^[3]

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

1920 United States Senate Election in Louisiana Democratic primary

← 1914 September 14, 1920 1926 →

Nominee Edwin Broussard Jared Sanders Donelson Caffery III Party Democratic Democratic Democratic Popular vote 49,718 43,425 15,563 Percentage 45.74% 39.95% 14.32%

U.S. senator before election Edward J. Gay Democratic Elected U.S. Senator Edwin S. Broussard Democratic

1920 United States Senate Democratic primary^[4]

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			108,706	100.00%

Louisiana election^[3]

Party		Candidate	Votes	%
	Democratic	Edwin S. Broussard	94,944	100.00%
	Democratic hold

1920 United States Senate election in Maryland

← 1914 November 2, 1920 1926 →

Nominee Ovington Weller John Walter Smith George Iverson Jr. Party Republican Democratic Independent Popular vote 184,999 169,200 21,345 Percentage 47.29% 43.25% 5.46%

County results Weller:      40–50%      50–60%      60–70% Smith:      40–50%      50–60%      60–70%

U.S. senator before election John Walter Smith Democratic Elected U.S. Senator Ovington Weller Republican

Maryland election^[3]

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			15,799	4.04%
Turnout			391,210
	Republican gain from Democratic

1920 United States Senate election in Missouri

← 1918 (special) November 2, 1920 1926 (special) →

Nominee Selden P. Spencer Breckinridge Long Party Republican Democratic Popular vote 711,161 589,498 Percentage 53.65% 44.47%

County results Spencer:      40–50%      50–60%      60–70%      70–80%      80–90% Long:      40–50%      50–60%      60–70%      70–80%      80–90%

U.S. senator before election Selden P. Spencer Republican Elected U.S. senator Selden P. Spencer Republican

Missouri election^[3]

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			121,663	9.18%
Turnout			1,325,494
	Republican hold

1920 United States Senate election in Nevada

← 1914 November 2, 1920 1926 →

Nominee Tasker Oddie Charles Henderson Anne Henrietta Martin Party Republican Democratic Independent Popular vote 11,550 10,402 4,981 Percentage 42.11% 37.93% 18.16%

County results Oddie:      30–40%      40–50%      50–60%      60–70% Henderson:      30–40%      40–50%      50–60%

U.S. senator before election Charles Henderson Democratic Elected U.S. Senator Tasker Oddie Republican

Nevada election^[3]

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			1148	5.18%
Turnout			27,427
	Republican gain from Democratic

1920 United States Senate election in New Hampshire

← 1918 (special) November 2, 1920 1926 →

Nominee George H. Moses Raymond Bartlett Stevens Party Republican Democratic Popular vote 90,173 65,038 Percentage 57.72% 41.63%

County results Moses:      50–60%      60–70%

U.S. senator before election George H. Moses Republican Elected U.S. Senator George H. Moses Republican

New Hampshire election^[3]

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			25135	16.09%
Turnout			156,215
	Republican hold

1920 United States Senate election in New York

← 1914 November 2, 1920 1926 →

Nominee James W. Wadsworth Harry C. Walker Party Republican Democratic Popular vote 1,434,393 901,310 Percentage 52.37% 32.90%   Nominee Jacob Panken Ella A. Boole Party Socialist Prohibition Popular vote 208,155 159,623 Percentage 7.60% 5.83%

County Results Wadsworth:      30–40%      40–50%      50–60%      60–70%

Senator before election James W. Wadsworth Republican Elected Senator James W. Wadsworth Republican

New York election^[3]

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			533,083	19.46%
Turnout			2,739,237
	Republican hold

1920 United States Senate election in North Carolina

← 1914 November 2, 1920 1926 →

Nominee Lee Slater Overman A. E. Holton Party Democratic Republican Popular vote 310,504 229,343 Percentage 57.52% 42.48%

County Results Overman:      50–60%      60–70%      70–80%      80–90%      90–100% Holton:      50–60%      60–70%      70–80%      80–90%

U.S. senator before election Lee Slater Overman Democratic Elected U.S. Senator Lee Slater Overman Democratic

North Carolina election^[3]

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

1920 United States Senate election in North Dakota

← 1914 November 2, 1920 1926 →

Nominee Edwin F. Ladd H. H. Perry Party Republican Democratic Popular vote 130,614 88,495 Percentage 59.61% 40.39%

County Results Ladd:      50–60%      60–70%      70–80%      80–90% Perry:      50–60%

U.S. senator before election Gerald Nye Republican Elected U.S. Senator Edwin F. Ladd Republican

North Dakota election^[3]

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

1920 United States Senate election in Ohio

← 1914 November 2, 1920 1926 →

Nominee Frank B. Willis William Alexander Julian Party Republican Democratic Popular vote 1,134,953 782,650 Percentage 59.10% 40.76%

County Results Willis:      50–60%      60–70%      70–80% Julian:      50–60%      60–70%

U.S. senator before election Warren G. Harding Republican Elected U.S. Senator Frank B. Willis Republican

Ohio election^[3]

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			352,303	18.34%
Turnout			1,920,250
	Republican hold

1920 United States Senate election in Oklahoma

← 1914 November 2, 1920 1926 →

Nominee John W. Harreld Scott Ferris Party Republican Democratic Popular vote 247,719 217,783 Percentage 50.64% 44.52%

County results Harreld:      40–50%      50–60%      60–70% Ferris:      50–60%      60–70%      70–80%      80–90%

U.S. senator before election Thomas Gore Democratic Elected U.S. Senator John W. Harreld Republican

Oklahoma election^[3]

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			29,936	6.12%
Turnout			489,166
	Republican gain from Democratic

1920 United States Senate election in Oregon

← 1914 November 2, 1920 1926 →

Nominee Robert N. Stanfield George Earle Chamberlain Party Republican Democratic Popular vote 116,696 100,133 Percentage 50.73% 43.53%

County Results Stanfield:      40–50%      50–60%      60–70% Chamberlain:      40–50%      50–60%

U.S. senator before election George Earle Chamberlain Democratic Elected U.S. Senator Robert N. Stanfield Republican

Oregon election^[3]

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			16,563	7.20%
Turnout			230,016
	Republican gain from Democratic

1920 United States Senate election in Pennsylvania

← 1914 November 2, 1920 1922 (special) →

Nominee Boies Penrose John A. Farrell Leah C. Marion Party Republican Democratic Prohibition Popular vote 1,067,989 484,362 132,610 Percentage 59.94% 27.18% 7.44%

County results Penrose:      40–50%      50–60%      60–70%      70–80% Farrell:      40–50%      50–60%

U.S. senator before election Boies Penrose Republican Elected U.S. Senator Boies Penrose Republican

General election results^[3]

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			583,627	32.76%
Turnout			1,781,843
	Republican hold

1920 South Carolina Democratic Senate primary runoff

← 1914 September 14, 1920 1926 →

Nominee Ellison D. Smith George Warren Party Democratic Democratic Popular vote 65,880 42,735 Percentage 60.7% 39.3%

First round results by county Runoff results by county Smith:      30–40%      40–50%      50–60%      60–70%      70–80%      80–90% Warren:      30–40%      40–50%      50-60%      60–70%      70–80%      80–90%

U.S. senator before election Ellison D. Smith Democratic Elected U.S. Senator Ellison D. Smith Democratic

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		Candidate	Votes	%
	Democratic	Ellison D. Smith (Incumbent)	64,388	100.00%
	Independent	George Warren	1	0.00%
Majority			64387	100.00%
Turnout			64389
	Democratic hold

1920 United States Senate election in South Dakota

← 1914 November 2, 1920 1926 →

Nominee Peter Norbeck Tom Ayres Party Republican Nonpartisan League Popular vote 92,267 44,309 Percentage 50.10% 24.06%   Nominee U. S. G. Cherry R. O. Richards Party Democratic Independent Popular vote 36,833 10,032 Percentage 20.00% 5.45%

County results Norbeck:      30–40%      40–50%      50–60%      60–70% Ayres:      30-40%      40–50%      50–60% Richards:      30–40% No Vote:

U.S. senator before election Edwin S. Johnson Democratic Elected U.S. Senator Peter Norbeck Republican

South Dakota election^[3]

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			47,958	26.04%
Turnout			184,179
	Republican hold

1920 United States Senate election in Utah

← 1914 November 2, 1920 1926 →

Nominee Reed Smoot Milton H. Welling Party Republican Democratic Popular vote 82,566 56,280 Percentage 56.57% 38.56%

County results Smoot:      40–50%      50–60%      60–70%      70–80%

U.S. senator before election Reed Smoot Republican Elected U.S. Senator Reed Smoot Republican

Utah election^[3]

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			26,286	18.01%
Turnout			145,958
	Republican hold

1920 United States Senate election in Vermont

← 1914 November 2, 1920 1923 →

Nominee William P. Dillingham Howard Shaw Party Republican Democratic Popular vote 69,650 19,580 Percentage 78.1% 21.9%

U.S. senator before election William P. Dillingham Republican Elected U.S. Senator William P. Dillingham Republican

1920 United States Senate election in Vermont^[3]

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			50,070	56.09%
Total votes			89,271
	Republican hold

1920 United States Senate special election in Virginia

← 1918 November 2, 1920 1924 →

Nominee Carter Glass J. R. Pollard Party Democratic Republican Popular vote 184,646 17,576 Percentage 91.3% 8.7%

U.S. senator before election Carter Glass Democratic Elected U.S. Senator Carter Glass Democratic

Virginia special election^[3]

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

1920 United States Senate election in Washington

← 1914 November 2, 1920 1926 →

Nominee Wesley L. Jones Clemens J. France George F. Cotterill Party Republican Farmer–Labor Democratic Popular vote 164,130 99,309 68,488 Percentage 56.40% 25.80% 17.80%

Results by county Jones:      30–40%      40–50%      50–60%      60–70%

U.S. senator before election Wesley Livsey Jones Republican Elected U.S. Senator Wesley Livsey Jones Republican

Washington election^[3]

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			117,760	30.60%
Turnout			384,866
	Republican hold

1920 United States Senate election in Wisconsin

← 1918 (special) November 2, 1920 1926 →

Nominee Irvine Lenroot James Thompson [no] Party Republican Independent Republican Popular vote 281,576 235,029 Percentage 41.58% 34.71%   Nominee Paul S. Reinsch Frank J. Weber Party Democratic Socialist Popular vote 89,265 66,172 Percentage 13.18% 9.77%

County results Lenroot:      30–40%      40–50%      50–60%      60–70%      70–80% Thompson:      30–40%      40–50%      50–60%      60–70% Weber:      20–30%

U.S. senator before election Irvine Lenroot Republican Elected U.S. Senator Irvine Lenroot Republican

Wisconsin election^[3]

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			46,547	6.87%
Turnout			677,152
	Republican hold

• 1920 United States elections
  • 1920 United States presidential election
  • 1920 United States gubernatorial elections
  • 1920 United States House of Representatives elections
• 66th United States Congress
• 67th United States Congress

• Byrd, Robert C. (October 1, 1993). Wolff, Wendy (ed.). The Senate, 1789–1989: Historical Statistics, 1789–1992. United States Senate Historical Office (volume 4 Bicentennial ed.). Washington, D.C.: U.S. Government Printing Office. ISBN 9780160632563 – via Google Books.