1918 United States Senate elections

Arkansas election
<img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4b/Flag_of_Arkansas_%281913%E2%80%931923%29.svg/50px-Flag_of_Arkansas_%281913%E2%80%931923%29.svg.png" decoding="async" width="50" height="33" class="mw-file-element" data-file-width="450" data-file-height="300">
← 1913 1924 →
U.S. senator before election; Joseph T. Robinson; Democratic	Elected U.S. senator ; Joseph T. Robinson; Democratic

Alabama election
<img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5c/Flag_of_Alabama.svg/50px-Flag_of_Alabama.svg.png" decoding="async" width="50" height="33" class="mw-file-element" data-file-width="600" data-file-height="400">
← 1911 1920 (special) →
U.S. senator before election; John H. Bankhead; Democratic	Elected U.S. senator ; John H. Bankhead; Democratic

1918 United States Senate elections
38 of the 96 seats in the United States Senate; 49 seats needed for a majority
	Results of the elections:; Democratic gain Democratic hold; Republican gain Republican hold; No election
Majority Leader before election; Thomas S. Martin; (as Conference Chairman); Democratic	Elected Majority Leader ; Henry Cabot Lodge; (Unofficial); Republican

The 1918 United States Senate elections were held throughout 1918,^[a] the midpoint of Woodrow Wilson's second term as president. This was the first election since the enactment of the Seventeenth Amendment that all 32 Class 2 Senators were subject to direct or popular election, making them the final class under the old system of being selected by state legislatures. Special elections were also held to fill vacancies.

Republicans gained a slim 2-seat control after picking up a net 6 seats. This came after an April 1918 special election where they flipped a seat in Wisconsin.

Gains, losses, and holds

Retirements

Three Republicans and one Democrat retired instead of seeking re-election. Two Republicans retired instead of seeking election to finish the unexpired terms, one Democrat retired instead of seeking election to a full term and two Democrats retired instead of seeking election to finish the unexpired terms.

State	Senator	Replaced by
Kentucky	George B. Martin	Augustus O. Stanley
Louisiana (special)	Walter Guion	Edward J. Gay
Michigan	William Alden Smith	Truman H. Newberry
New Hampshire (special)	Irving W. Drew	George H. Moses
New Hampshire	Henry F. Hollis	Henry W. Keyes
New Jersey	David Baird	Walter E. Edge
Oregon (special)	Charles L. McNary	Frederick W. Mulkey
South Carolina (special)	Christie Benet	Nathaniel B. Dial
West Virginia	Nathan Goff Jr.	Davis Elkins

Defeats

Eight Democrats and one Republican sought re-election but lost in the primary or general election.

State	Senator	Replaced by
Colorado	John F. Shafroth	Lawrence C. Phipps
Delaware	Willard Saulsbury Jr.	L. Heisler Ball
Georgia	Thomas W. Hardwick	William J. Harris
Illinois	J. Hamilton Lewis	Medill McCormick
Kansas	William H. Thompson	Arthur Capper
Massachusetts	John W. Weeks	David I. Walsh
Mississippi	James K. Vardaman	Pat Harrison
Missouri	Xenophon P. Wilfley	Selden P. Spencer
South Carolina (special)	Christie Benet	William P. Pollock

Deaths

One Democrat died on October 21, 1917, and his seat remained vacant until an April 1918 election.

State	Senator	Replaced by
Wisconsin	Paul O. Husting	Irvine Lenroot

Post-election changes

State	Senator	Replaced by
Alabama	John H. Bankhead	Braxton B. Comer
Ohio	Warren G. Harding	Frank B. Willis
Idaho	John F. Nugent	Frank R. Gooding
Virginia	Thomas S. Martin	Carter Glass

Source: United States Senate Official Website

Change in composition

Before the elections

		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 Kan. Ran	D₃₇ Ill. Ran	D₃₆ Idaho Ran	D₃₅ Ga. Ran	D₃₄ Del. Ran	D₃₃ Colo. Ran	D₃₂ Ark. Ran	D₃₁ Ala. Ran	D₃₀	D₂₉
D₃₉ La. (reg) Ran	D₄₀ La. (sp) Ran	D₄₁ Mo. (sp) Ran	D₄₂ Mont. Ran	D₄₃ Nev. (sp) Ran	D₄₄ N.H. (reg) Retired	D₄₅ N.C. Ran	D₄₆ Okla. Ran	D₄₇ S.C. (reg) & S.C. (sp) Ran	D₄₈ Tenn. Ran
Majority →									D₄₉ Va. Ran
R₃₉ N.J. (sp) Ran N.J. (reg) Retired	R₄₀ N.M. Ran	R₄₁ Ore. (sp) Retired Ore. (reg) Ran	R₄₂ R.I. Ran	R₄₃ S.D. Ran	R₄₄ Texas Ran	R₄₅ W.Va. Retired	D₅₁ Wyo. Ran	D₅₀ Wis. Died	D₄₉ Va. Ran
R₃₈ N.H. (sp) Retired	R₃₇ Neb. Ran	R₃₆ Miss. Ran	R₃₅ Minn. Ran	R₃₄ Mich. Retired	R₃₃ Mass. Ran	R₃₂ Me. Ran	R₃₁ Ky. Retired	R₃₀ Iowa Ran	R₂₉ Idaho (reg) Ran
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

Elections results

		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 Mass. Gain	D₃₇ La. (sp) Hold	D₃₆ La. (reg) Re-elected	D₃₅ Ky. Hold	D₃₄ Idaho Elected^[c]	D₃₃ Ga. Hold	D₃₂ Ark. Re-elected	D₃₁ Ala. Re-elected	D₃₀	D₂₉
D₃₉ Miss. Hold	D₄₀ Mont. Re-elected	D₄₁ Nev. Elected^[c]	D₄₂ N.C. Re-elected	D₄₃ Okla. Re-elected	D₄₄ S.C. (reg) & S.C. (sp) Hold	D₄₅ Tenn. Re-elected	D₄₆ Texas Re-elected	D₄₇ Va. Re-elected	R₄₉ Wyo. Re-elected
Majority →									R₄₉ Wyo. Re-elected
R₃₉ Neb. Re-elected	R₄₀ N.H. (reg) Gain	R₄₁ N.H. (sp) Hold	R₄₂ N.J. (sp) Elected N.J. (reg) Hold	R₄₃ N.M. Re-elected	R₄₄ Ore. (sp) Hold Ore. (reg) Elected^[c]	R₄₅ R.I. Re-elected	R₄₆ S.D. Re-elected	R₄₇ W.Va. Hold	R₄₈ Wis. Gain
R₃₈ Mo. Gain	R₃₇ Minn. Re-elected	R₃₆ Mich. Hold	R₃₅ Me. Re-elected	R₃₄ Kan. Gain	R₃₃ Iowa Re-elected	R₃₂ Ill. Gain	R₃₁ Idaho (reg) Re-elected	R₃₀ Del. Gain	R₂₉ Colo. Gain
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

Complete list of races

Special elections during the 65th Congress

In these special elections, the winner was seated during 1918 or before March 4, 1919; ordered by election date.

State	Incumbent			Results	Candidates
State	Senator	Party	Electoral history	Results	Candidates
Wisconsin (Class 3)	Paul O. Husting	Democratic	1914	Incumbent died October 21, 1917. New senator elected April 2, 1918. Republican gain.	▌ Y Irvine Lenroot (Republican) 38.73% ▌Joseph E. Davies (Democratic) 35.12% ▌Victor L. Berger (Socialist) 26.09% ▌Anthony J. Benjamin (Prohibition) 0.06%^[1]
Idaho (Class 3)	John F. Nugent	Democratic	1918 (Appointed)	Interim appointee elected November 5, 1918.	▌ Y John F. Nugent (Democratic) 50.5% ▌Frank R. Gooding (Republican) 49.5%^[2]^: 1442
Louisiana (Class 3)	Walter Guion	Democratic	1918 (Appointed)	Interim appointee retired. New senator elected November 5, 1918. Democratic hold.	▌ Y Edward J. Gay (Democratic) Unopposed^[2]^: 1447
Missouri (Class 3)	Xenophon P. Wilfley	Democratic	1918 (Appointed)	Interim appointee lost nomination. New senator elected November 5, 1918. Republican gain.	▌ Y Selden P. Spencer (Republican) 52.39% ▌Joseph W. Folk (Democratic) 46.29% ▌Caleb Lipscomb (Socialist) 1.16% ▌William Wesley Cox (Socialist Labor) 0.16%^[3]^: 419
Nevada (Class 3)	Charles Henderson	Democratic	1918 (Appointed)	Interim appointee elected November 5, 1918.	▌ Y Charles Henderson (Democratic), 47.71% ▌Edwin E. Roberts (Republican) 31.5% ▌Anne Henrietta Martin (Independent) 18.01% ▌Martin Scanlan (Socialist) 2.78%^[3]^: 419
New Hampshire (Class 3)	Irving W. Drew	Republican	1918 (Appointed)	Interim appointee retired. New senator elected November 5, 1918. Republican hold.	▌ Y George H. Moses (Republican) 50.76% ▌John B. Jameson (Democratic) 49.24%^[2]^: 1455
New Jersey (Class 2)	David Baird	Republican	1918 (Appointed)	Interim appointee elected November 5, 1918. Interim appointee was not a candidate for the next term, see below.	▌ Y David Baird (Republican) 49.17% ▌Charles O. Hennessy (Democratic) 44.64% ▌James M. Reilly (Socialist) 3.82% ▌Grafton Day (Prohibition) 2.38%^[3]^: 419
Oregon (Class 2)	Charles L. McNary	Republican	1917 (Appointed)	Interim appointee retired. New senator elected November 5, 1918. Republican hold. Interim appointee was instead elected to the next term, see below. Mulkey took the seat but subsequently resigned so McNary could be re-appointed ahead of the term.	▌ Y Frederick W. Mulkey (Republican) 84.53% ▌Martha Bean (Socialist) 15.47%^[2]^: 1461
South Carolina (Class 2)	Christie Benet	Democratic	1918 (Appointed)	Interim appointee lost renomination. New senator elected November 5, 1918. Democratic hold. Neither the interim appointee nor the winner were elected to the next term, see below.	▌ Y William P. Pollock (Democratic) Unopposed^[3]^: 419

Elections leading to the 66th Congress

In these general elections, the winners were elected for the term beginning March 4, 1919; ordered by state.

All of the elections involved the Class 2 seats.

State	Incumbent			Results	Candidates
State	Senator	Party	Electoral history	Results	Candidates
Alabama	John H. Bankhead	Democratic	1907 (Appointed) 1907 (special) 1911 (Early)	Incumbent re-elected.	▌ Y John H. Bankhead (Democratic) Unopposed^[2]^: 1434
Arkansas	Joseph T. Robinson	Democratic	1913	Incumbent re-elected.	▌ Y Joseph T. Robinson (Democratic) Unopposed^[2]^: 1436
Colorado	John F. Shafroth	Democratic	1913	Incumbent lost re-election. New senator elected. Republican gain.	▌ Y Lawrence C. Phipps (Republican) 49.49% ▌John F. Shafroth (Democratic) 47.94% ▌P. A. Richardson (Prohibition) 2.58%^[3]^: 429
Delaware	Willard Saulsbury Jr.	Democratic	1913	Incumbent lost re-election. New senator elected. Republican gain.	▌ Y L. Heisler Ball (Republican) 51.17% ▌Willard Saulsbury Jr. (Democratic) 47.83% ▌William H. Connor (Socialist) 1%^[3]^: 429
Georgia	Thomas W. Hardwick	Democratic	1914 (special)	Incumbent lost renomination. New senator elected. Democratic hold.	▌ Y William J. Harris (Democratic) 88.34% ▌G. H. Williams (Republican) 11.66%^[2]^: 1441
Idaho	William Borah	Republican	1907 1913	Incumbent re-elected.	▌ Y William Borah (Republican) 67.21% ▌Frank L. Moore (Democratic) 32.79%^[2]^: 1442
Illinois	J. Hamilton Lewis	Democratic	1913 (Late)	Incumbent lost re-election. New senator elected. Republican gain.	▌ Y Medill McCormick (Republican) 50.5% ▌J. Hamilton Lewis (Democratic) 44.92% ▌William B. Lloyd (Socialist) 3.91% ▌John M. Francis (Socialist Labor) 0.34%^[3]^: 429
Iowa	William S. Kenyon	Republican	1911 (special) 1913	Incumbent re-elected.	▌ Y William S. Kenyon (Republican) 65.4% ▌Charles Rollin Keyes (Democratic) 34.6%^[2]^: 1444
Kansas	William H. Thompson	Democratic	1913	Incumbent lost re-election. New senator elected. Republican gain.	▌ Y Arthur Capper (Republican) 63.69% ▌William H. Thompson (Democratic) 33.73% ▌Eva Harding (Socialist) 2.58%^[3]^: 429
Kentucky	George B. Martin	Democratic	1918 (Appointed)	Incumbent retired. New senator elected. Democratic hold.	▌ Y Augustus O. Stanley (Democratic) 50.77% ▌Ben Bruner (Republican) 49.23%^[2]^: 1446
Louisiana	Joseph E. Ransdell	Democratic	1912	Incumbent re-elected.	▌ Y Joseph E. Ransdell (Democratic) Unopposed^[2]^: 1446
Maine	Bert M. Fernald	Republican	1916 (special)	Incumbent re-elected September 9, 1918.	▌ Y Bert M. Fernald (Republican) 55.4% ▌Earl Newbert (Democratic) 44.6%^[2]^: 1447
Massachusetts	John W. Weeks	Republican	1913	Incumbent lost re-election. New senator elected. Democratic gain.	▌ Y David I. Walsh (Democratic) 49.67% ▌John W. Weeks (Republican) 45.07% ▌Thomas W. Lawson (Independent) 5.26%^[3]^: 429
Michigan	William Alden Smith	Republican	1911 1913	Incumbent retired. New senator elected. Republican hold.	▌ Y Truman H. Newberry (Republican) 50.19% ▌Henry Ford (Democratic) 48.47% ▌E. O. Foss (Socialist) 1.09% ▌William Faull (Prohibition) 0.26%^[3]^: 429
Minnesota	Knute Nelson	Republican	1895 1901 1907 1913	Incumbent re-elected.	▌ Y Knute Nelson (Republican) 60.05% ▌Willis G. Calderwood (National) 39.95%^[2]^: 1450
Mississippi	James K. Vardaman	Democratic	1912	Incumbent lost renomination. New senator elected.	▌ Y Pat Harrison (Democratic) 95.04% ▌Summer W. Rose (Socialist) 4.96%^[2]^: 1451
Montana	Thomas J. Walsh	Democratic	1913	Incumbent re-elected.	▌ Y Thomas J. Walsh (Democratic) 41.07% ▌Oscar Lanstrum (Republican) 35.79% ▌Jeannette Rankin (National) 23.14%^[3]^: 429
Nebraska	George W. Norris	Republican	1913	Incumbent re-elected.	▌ Y George W. Norris (Republican) 54.52% ▌John H. Morehead (Democratic) 45.49%^[2]^: 1453
New Hampshire	Henry F. Hollis	Democratic	1913	Incumbent retired. New senator elected. Republican gain.	▌ Y Henry W. Keyes (Republican) 53.54% ▌Eugene Elliott Reed (Democratic) 46.46%^[2]^: 1455
New Jersey	David Baird	Republican	1918 (Appointed)	Interim appointee retired. New senator elected. Republican hold. Interim appointee, however, was elected to finish the current term, see above.	▌ Y Walter E. Edge (Republican) 50.34% ▌George M. La Monte (Democratic) 43.23% ▌James M. Reilly (Socialist) 4.14% ▌Grafton Day (Prohibition) 1.62% ▌William J. Wallace (Single Tax) 0.66%^[3]^: 429
New Mexico	Albert B. Fall	Republican	1912 (New state) 1912 (Invalidated) 1913	Incumbent re-elected.	▌ Y Albert B. Fall (Republican) 51.4% ▌William B. Walton (Democratic) 47.48% ▌W. P. Metcalf (Socialist) 1.12%^[3]^: 429
North Carolina	F. M. Simmons	Democratic	1901 1907 1913	Incumbent re-elected.	▌ Y F. M. Simmons (Democratic) 60.5% ▌John M. Morehead (Republican) 39.5%^[2]^: 1458
Oklahoma	Robert L. Owen	Democratic	1907 (New state) 1913	Incumbent re-elected.	▌ Y Robert L. Owen (Democratic) 55.44% ▌W. B. Johnson (Republican) 40.73% ▌C. M. Greenland (Socialist) 3.83%^[3]^: 429
Oregon	Charles L. McNary	Republican	1917 (Appointed)	Interim appointee elected to the next term but not to finish the term. Winner subsequently appointed to begin next term early when winner of the special election, see above, resigned.	▌ Y Charles L. McNary (Republican) 54.17% ▌Oswald West (Democratic) 42.3% ▌Albert Slaughter (Socialist) 3.53%^[3]^: 429
Rhode Island	LeBaron B. Colt	Republican	1913	Incumbent re-elected.	▌ Y LeBaron B. Colt (Republican) 51.76% ▌George F. O'Shaunessy (Democratic) 46.24% ▌Frederick W. Hunt (Socialist) 2%^[3]^: 429
South Carolina	Christie Benet	Democratic	1918 (Appointed)	Interim appointee retired. New senator elected. Democratic hold. Neither the interim appointee nor the winner were elected to finish the current term, see above.	▌ Y Nathaniel B. Dial (Democratic) Unopposed^[2]^: 1463
South Dakota	Thomas Sterling	Republican	1913	Incumbent re-elected.	▌ Y Thomas Sterling (Republican) 55.07% ▌W. T. Rinehart (Democratic) 38.95% ▌Orville Rafferty (Independent) 5.98%^[3]^: 429
Tennessee	John K. Shields	Democratic	1913	Incumbent re-elected.	▌ Y John K. Shields (Democratic) 62.17% ▌Henry Clay Evans (Republican) 37.83%^[2]^: 1465
Texas	Morris Sheppard	Democratic	1913 (special)	Incumbent re-elected.	▌ Y Morris Sheppard (Democratic) 86.69% ▌J. Webster Flanagan (Republican) 12.41% ▌M. A. Smith (Socialist) 0.9%^[3]^: 429
Virginia	Thomas S. Martin	Democratic	1893 (Early) 1899 (Early) 1906 1912	Incumbent re-elected.	▌ Y Thomas S. Martin (Democratic) Unopposed^[2]^: 1468
West Virginia	Nathan Goff Jr.	Republican	1913	Incumbent retired. New senator elected. Republican hold.	▌ Y Davis Elkins (Republican) 53.53% ▌Clarence W. Watson (Democratic) 45.4% ▌D. M. S. Holt (Socialist) 1.06%^[3]^: 429
Wyoming	Francis E. Warren	Republican	1890 1893 (Lost) 1895 1901 1907 1913	Incumbent re-elected.	▌ Y Francis E. Warren (Republican) 57.77% ▌John Eugene Osborne (Democratic) 42.23%^[4]

Closest races

Eighteen races had a margin of victory under 10%:

State	Party of winner	Margin
Idaho (special)	Democratic	1.0%
New Hampshire (special)	Republican	1.52%^[d]
Kentucky	Democratic	1.54%
Colorado	Republican (flip)	1.55%
Michigan	Republican	1.72%
Delaware	Republican (flip)	3.34%
Wisconsin (special)	Republican (flip)	3.61%
New Mexico	Republican	3.92%
New Jersey (special)	Republican	4.53%
Massachusetts	Democratic (flip)	4.6%
Montana	Democratic	5.28%
Rhode Island	Republican	5.52%
Illinois	Republican (flip)	5.58%
Missouri (special)	Republican (flip)	6.1%
New Hampshire	Republican (flip)	7.08%
New Jersey	Republican	7.11%
West Virginia	Republican	8.13%
Nebraska	Republican	9.03%

Alabama

Alabama election
Party		Candidate	Votes	%
	Democratic	John H. Bankhead (incumbent)	54,880	100.00
Total votes			54,880	100.00
	Democratic hold

Arkansas

Arkansas election
Party		Candidate	Votes	%
	Democratic	Joseph T. Robinson (incumbent)	78,377	100.00
Total votes			78,377	100.00
	Democratic hold

Colorado

1918 United States Senate election in Colorado

← 1913

November 5, 1918

1924 →


Nominee	Lawrence C. Phipps	John F. Shafroth
Party	Republican	Democratic
Popular vote	107,726	104,347
Percentage	49.49%	47.94%

County results
Phipps: 40–50% 50–60%
Shafroth: 40–50% 50–60% 60–70% 70–80%

U.S. senator before election

John F. Shafroth
Democratic

Elected U.S. Senator

Lawrence C. Phipps
Republican

Colorado election
Party		Candidate	Votes	%
	Republican	Lawrence C. Phipps	107,726	49.49
	Democratic	John F. Shafroth (incumbent)	104,347	47.94
	Prohibition	P. A. Richardson	5,606	2.58
Majority			3,379	1.55
Total votes			217,679	100.00
	Republican gain from Democratic

Delaware

Delaware election

← 1913

1924 →


Nominee	L. Heisler Ball	Willard Saulsbury Jr.
Party	Republican	Democratic
Popular vote	21,519	20,113
Percentage	51.17%	47.83%

U.S. senator before election

Willard Saulsbury Jr.
Democratic

Elected U.S. senator

L. Heisler Ball
Republican

Georgia

Georgia election

← 1913

1924 →


Nominee	William J. Harris	G. H. Williams
Party	Democratic	Republican
Popular vote	53,731	7,078
Percentage	88.34%	11.66%

U.S. senator before election

Thomas W. Hardwick
Democratic

Elected U.S. senator

William J. Harris
Democratic

Idaho

Idaho (regular)

Idaho election

← 1913

1924 →


Nominee	William Borah	Frank L. Moore
Party	Republican	Democratic
Popular vote	63,587	31,018
Percentage	67.21%	32.79%

County results
Borah: 50–60% 60–70% 70–80%
Moore: 50–60%

U.S. senator before election

William Borah
Republican

Elected U.S. senator

William Borah
Republican

Idaho (special)

Idaho special election

← 1914

1920 →


Nominee	John F. Nugent	Frank R. Gooding
Party	Democratic	Republican
Popular vote	48,467	47,497
Percentage	50.50%	49.50%

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

U.S. senator before election

John F. Nugent
Democratic

Elected U.S. senator

John F. Nugent
Democratic

Incumbent Democratic Senator John Frost Nugent defeated Republican nominee Frank Robert Gooding by a very narrow margin of 1.00% and by 970 votes. Upon his election, John Frost Nugent became the first Democrat ever to have been elected to the United States Senate in Idaho or from Idaho and the first non-Republican to win a United States Senate seat in Idaho or from Idaho since 1901 and the first non-Republican to win the Class 3 Senate seat in Idaho or from Idaho since 1897.

Illinois

1918 United States Senate election in Illinois

← 1913

November 5, 1918

1924 →


Nominee	Medill McCormick	J. Hamilton Lewis
Party	Republican	Democratic
Popular vote	479,967	426,943
Percentage	50.50%	44.92%

Results by county
McCormick: 40–50% 50–60% 60–70% 70–80% 80–90%
Lewis: 40–50% 50–60% 60–70%

U.S. senator before election

J. Hamilton Lewis
Democratic

Elected U.S. senator

Medill McCormick
Republican

Illinois election^[3]^: 429
Party		Candidate	Votes	%
	Republican	Medill McCormick	479,983	50.50
	Democratic	James Hamilton Lewis (incumbent)	426,943	44.92
	Socialist	William Bross Lloyd	37,167	3.91
	Socialist Labor	John M. Francis	3,268	0.34
	Prohibition	Frank B. Vennum	3,151	0.33
Majority			53,024	5.58
Turnout			950,496
	Republican gain from Democratic

Iowa

Iowa election

← 1913

1922 (special) →


Nominee	William S. Kenyon	Charles R. Keyes
Party	Republican	Democratic
Popular vote	230,264	121,830
Percentage	65.4%	34.6%

U.S. senator before election

William S. Kenyon
Republican

Elected U.S. Senator

William S. Kenyon
Republican

Kansas

Kansas election

← 1913

1924 →


Nominee	Arthur Capper	William Howard Thompson
Party	Republican	Democratic
Popular vote	281,931	149,300
Percentage	63.69%	33.73%

U.S. senator before election

William Howard Thompson
Democratic

Elected U.S. senator

Arthur Capper
Republican

Kentucky

Kentucky election

← 1913

1924 →


Nominee	Augustus O. Stanley	Ben Bruner
Party	Democratic	Republican
Popular vote	184,385	178,797
Percentage	50.77%	49.23%

County results
Stanley: 50–60% 60–70% 70–80% 80–90%
Bruner: 50–60% 60–70% 70–80% 80–90% >90%

U.S. senator before election

George Brown Martin
Democratic

Elected U.S. senator

Augustus O. Stanley
Democratic

Louisiana

Louisiana (regular)

Louisiana election

← 1912

1924 →


Nominee	Joseph E. Ransdell
Party	Democratic
Popular vote	44,224
Percentage	100%

U.S. senator before election

Joseph E. Ransdell
Democratic

Elected U.S. senator

Joseph E. Ransdell
Democratic

Louisiana (special)

Louisiana special election

← 1914

September 10, 1918

1920 →


Nominee	Edward James Gay Jr.
Party	Democratic
Popular vote	44,345
Percentage	100%

U.S. senator before election

Walter Guion
Democratic

Elected U.S. senator

Edward James Gay Jr.
Democratic

Maine

Maine election

← 1916 (special)

September 9, 1918

1924 →


Nominee	Bert Fernald	Elmer Newbert
Party	Republican	Democratic
Popular vote	67,431	54,289
Percentage	55.40%	44.60%

U.S. senator before election

Bert Fernald
Republican

Elected U.S. Senator

Bert Fernald
Republican

Massachusetts

1918 United States Senate election in Massachusetts

← 1913

November 5, 1918

1924 →


Nominee	David I. Walsh	John W. Weeks	Thomas W. Lawson
Party	Democratic	Republican	Independent
Popular vote	207,478	188,287	21,985
Percentage	49.66%	45.06%	5.26%

County results
Walsh: 40–50% 50–60% 60–70%
Weeks: 40–50% 50–60% 60–70%

Senator before election

John W. Weeks
Republican

Elected Senator

David I. Walsh
Democratic

Michigan

1918 United States Senate election in Michigan

← 1913

November 5, 1918

1924 →

Turnout

15.60%


Nominee	Truman Newberry	Henry Ford
Party	Republican	Democratic
Popular vote	220,054	212,487
Percentage	50.19%	48.47%

County Results

Newberry: 40–50% 50–60% 60–70% 70–80%

Ford: 40-50% 50–60% 60–70%

U.S. senator before election

William Alden Smith
Republican

Elected U.S. Senator

Truman Handy Newberry
Republican

1918 United States Senate election in Michigan^[3]^: 429
Party		Candidate	Votes	%
	Republican	Truman H. Newberry	220,054	50.19%
	Democratic	Henry Ford	212,487	48.47%
	Socialist	Edward O. Foss	4,763	1.09%
	Prohibition	William J. Faull	1,133	0.26%
Majority			7,567	1.72
Total votes			438,437	100.00
	Republican hold

Minnesota

Minnesota election

← 1913

1923 (special) →


Nominee	Knute Nelson	Willis Calderwood
Party	Republican	National
Popular vote	206,428	137,334
Percentage	60.05%	39.95%

County results
Nelson: 50–60% 60–70% 70-80%
Calderwood: 50-60% 60-70%

U.S. senator before election

Knute Nelson
Republican

Elected U.S. senator

Knute Nelson
Republican

Minnesota election
Party		Candidate	Votes	%
	Republican	Knute Nelson (incumbent)	206,428	60.05
	National	Willis Calderwood	137,334	39.95
Majority			69,094	20.10
Total votes			343,762	100.00
	Republican hold

Mississippi

1918 U.S. Senate Democratic primary in Mississippi

← 1912

August 20, 1918

1924 →


Nominee	Pat Harrison	James K. Vardaman	Edmond Noel
Party	Democratic	Democratic	Democratic
Popular vote	56,715	44,154	6,730
Percentage	52.71%	41.04%	6.26%

County results
Harrison:      40–50%      50–60%      60–70%      70–80%      80–90%
Vardaman:      40–50%      50–60%      60-70%      70-80%
Noel:      50-60%

U.S. senator before election

James K. Vardaman
Democratic

Elected U.S. Senator

Pat Harrison
Democratic

Missouri (special)

1918 United States Senate special election in Missouri

← 1914

1920 →


Nominee	Selden P. Spencer	Joseph W. Folk
Party	Republican	Democratic
Popular vote	302,680	267,397
Percentage	52.39%	46.29%

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

U.S. senator before election

Xenophon P. Wilfley
Democratic

Elected U.S. senator

Selden P. Spencer
Republican

Montana

Montana election

← 1913

1924 →


Nominee	Thomas J. Walsh	Oscar M. Lanstrum	Jeannette Rankin
Party	Democratic	Republican	National
Popular vote	46,160	40,229	26,013
Percentage	41.07%	35.79%	23.14%

County results

U.S. senator before election

Thomas J. Walsh
Democratic

Elected U.S. Senator

Thomas J. Walsh
Democratic

Nebraska

Nebraska election

← 1913

1924 →


Nominee	George W. Norris	John H. Morehead
Party	Republican	Democratic
Popular vote	119,486	99,696
Percentage	54.51%	45.49%

U.S. senator before election

George W. Norris
Republican

Elected U.S. senator

George W. Norris
Republican

Nevada (special)

Nevada special election

← 1914

1920 →


Nominee	Charles Henderson	Edwin E. Roberts	Anne Henrietta Martin
Party	Democratic	Republican	Independent
Popular vote	12,197	8,053	4,603
Percentage	47.71%	31.50%	18.01%

Results by county
Henderson: 30–40% 40–50% 50–60% 60–70%
Roberts: 40–50% 50–60%

U.S. senator before election

Charles Henderson
Democratic

Elected U.S. senator

Charles Henderson
Democratic

New Hampshire

New Hampshire (regular)

New Hampshire election

← 1913

1924 →


Nominee	Henry W. Keyes	Eugene Elliott Reed
Party	Republican	Democratic
Popular vote	37,783	32,783
Percentage	53.54%	46.46%

U.S. senator before election

Henry F. Hollis
Republican

Elected U.S. senator

Henry W. Keyes
Republican

New Hampshire (special)

New Hampshire special election

← 1914

1920 →


Nominee	George H. Moses	John B. Jameson
Party	Republican	Democratic
Popular vote	35,528	34,458
Percentage	50.76%	49.24%

U.S. senator before election

Irving W. Drew
Republican

Elected U.S. senator

George H. Moses
Republican

New Jersey

New Jersey (regular)

New Jersey election

← 1913

November 7, 1918

1924 →


Nominee	Walter E. Edge	George M. La Monte
Party	Republican	Democratic
Popular vote	179,022	153,743
Percentage	50.34%	43.23%

Senator before election

David Baird Sr.
Republican

Elected Senator

Walter E. Edge
Republican

New Jersey (special)

New Jersey special election

← 1913

1918 →


Nominee	David Baird Sr.	Charles O'Connor Hennessy
Party	Republican	Democratic
Popular vote	170,414	154,734
Percentage	49.17%	44.64%

U.S. senator before election

David Baird Sr.
Republican

Elected U.S. senator

David Baird Sr.
Republican

New Mexico

New Mexico election

← 1912

1924 →


Nominee	Albert B. Fall	William B. Walton
Party	Republican	Democratic
Popular vote	24,322	22,470
Percentage	51.40%	47.48%

U.S. senator before election

Albert B. Fall
Republican

Elected U.S. senator

Albert B. Fall
Republican

North Carolina

North Carolina election

← 1913

1924 →


Nominee	F. M. Simmons	John Motley Morehead II
Party	Democratic	Republican
Popular vote	143,519	93,707
Percentage	60.50%	39.50%

U.S. senator before election

F. M. Simmons
Democratic

Elected U.S. senator

F. M. Simmons
Democratic

Oklahoma

Oklahoma election

← 1913

1924 →


Nominee	Robert L. Owen	W. B. Johnson
Party	Democratic	Republican
Popular vote	105,009	77,043
Percentage	55.47%	40.69%

U.S. senator before election

Robert L. Owen
Democratic

Elected U.S. Senator

Robert L. Owen
Democratic

Oregon

Oregon (regular)

Oregon election

← 1913

1924 →


Nominee	Charles L. McNary	Oswald West
Party	Republican	Democratic
Popular vote	82,360	64,303
Percentage	54.17%	42.30%

U.S. senator before election

Frederick W. Mulkey
Republican

Elected U.S. senator

Charles L. McNary
Republican

Oregon (special)

Oregon special election

← 1913

1918 →


Nominee	Frederick W. Mulkey	Martha Bean
Party	Republican	Socialist
Popular vote	103,913	19,014
Percentage	84.53%	15.47%

U.S. senator before election

Charles L. McNary
Republican

Elected U.S. senator

Frederick W. Mulkey
Republican

Rhode Island

Rhode Island election

← 1913

1924 →


Nominee	LeBaron B. Colt	George F. O'Shaunessy
Party	Republican	Democratic
Popular vote	42,055	37,573
Percentage	51.76%	46.24%

U.S. senator before election

LeBaron B. Colt
Republican

Elected U.S. senator

LeBaron B. Colt
Republican

South Carolina

South Carolina (regular)

South Carolina election

← 1918 (special)

August 27, 1918

1924 →


Candidate	Nathaniel B. Dial	Cole L. Blease
Party	Democratic	Democratic
Popular vote	65,064	40,456
Percentage	58.70%	36.50%

U.S. senator before election

William P. Pollock
Democratic

Elected U.S. senator

Nathaniel B. Dial
Democratic

South Carolina Democratic primary^[5]
Party		Candidate	Votes	%
	Democratic	Nathaniel B. Dial	65,064	58.70
	Democratic	Cole L. Blease	40,456	36.50
	Democratic	James F. Rice	5,317	4.80
Majority			24,608	22.20
Total votes			110,837	100.00
	Democratic hold

South Carolina (special)

South Carolina election

← 1913

September 10, 1918

1918 →


Nominee	William P. Pollock	Thomas H. Peeples
Party	Democratic	Democratic
Popular vote	49,920	30,044
Percentage	62.43%	37.57%

U.S. senator before election

Christie Benet
Democratic

Elected U.S. senator

William P. Pollock
Democratic

South Carolina special Democratic primary^[5]
Party		Candidate	Votes	%
	Democratic	William P. Pollock	38,816	34.91
	Democratic	Thomas H. Peeples	37,567	33.79
	Democratic	Christie Benet (incumbent)	34,807	31.30
Total votes			111,190	100.00

South Carolina special Democratic primary runoff^[5]
Party		Candidate	Votes	%
	Democratic	William P. Pollock	49,920	62.43
	Democratic	Thomas H. Peeples	30,044	37.57
Majority			19,876	24.86
Total votes			79,964	100.00
	Democratic hold

South Dakota

South Dakota election

← 1913

1924 →


Nominee	Thomas Sterling	Orville V. Rinehart	W. T. Rafferty
Party	Republican	Democratic	Independent
Popular vote	51,198	36,210	5,560
Percentage	55.07%	38.95%	5.98%

County results
Sterling:      40–50%      50–60%      60–70%      70–80%
Rinehart:      40–50%      50–60%      60–70%      70–80%
No Vote:

U.S. senator before election

Thomas Sterling
Republican

Elected U.S. Senator

Thomas Sterling
Republican

Tennessee

1918 United States Senate election in Tennessee

← 1913

November 5, 1918

1924 →


Nominee	John K. Shields	Henry Clay Evans
Party	Democratic	Republican
Popular vote	98,605	59,989
Percentage	62.17%	37.83%

U.S. senator before election

John K. Shields
Democratic

Elected U.S. senator

John K. Shields
Democratic

General election results^[6]
Party		Candidate	Votes	%
	Democratic	John K. Shields (incumbent)	98,605	62.17%
	Republican	Henry Clay Evans	59,989	37.83%
Total votes			158,594	100.00%

Texas

1918 United States Senate election in Texas

← 1913

November 5, 1918

1924 →


Nominee	Morris Sheppard	Webster Flanagan
Party	Democratic	Republican
Popular vote	155,178	22,214
Percentage	86.69%	12.41%

County Results^[7]

Sheppard: 50–60% 60–70% 70–80% 80–90% >90%
Flanagan: 50–60% 60–70%

No vote:

U.S. senator before election

Morris Sheppard
Democratic

Elected U.S. Senator

Morris Sheppard
Democratic

Virginia

Virginia election

← 1912

1924 →


Nominee	Thomas S. Martin
Party	Democratic
Popular vote	40,403
Percentage	100%

U.S. senator before election

Thomas S. Martin
Democratic

Elected U.S. senator

Thomas S. Martin
Democratic

West Virginia

West Virginia election

← 1913

1924 →


Nominee	Davis Elkins	Clarence W. Watson
Party	Republican	Democratic
Popular vote	115,216	97,715
Percentage	53.53%	45.40%

U.S. senator before election

Nathan Goff Jr.
Republican

Elected U.S. senator

Davis Elkins
Republican

Wisconsin (special)

Wisconsin special election

← 1914

April 2, 1918

1920 →


Nominee	Irvine Lenroot	Joseph E. Davies	Victor L. Berger
Party	Republican	Democratic	Socialist
Popular vote	163,983	148,923	110,487
Percentage	38.73%	35.12%	26.09%

Results by county
Lenroot:      30–40%      40–50%      50–60%      60–70%
Davies:      30–40%      40–50%      50–60%
Berger:      30–40%      40–50%      50–60%

U.S. senator before election

Paul O. Husting
Democratic

Elected U.S. senator

Irvine Lenroot
Republican

Wisconsin election^[1]
Party		Candidate	Votes	%
	Republican	Irvine Lenroot	163,983	38.73
	Democratic	Joseph E. Davies	148,923	35.12
	Socialist	Victor L. Berger	110,487	26.09
	Prohibition	Anthony J. Benjamin	233	0.06
	Write-in	Scattering	371	0.06
Majority			15,060	3.61
Total votes			423,997	100.00
	Republican gain from Democratic

Wyoming

Wyoming election

← 1913

1924 →


Nominee	Francis E. Warren	John Eugene Osborne
Party	Republican	Democratic
Popular vote	115,216	97,715
Percentage	53.53%	45.40%

U.S. senator before election

Francis E. Warren
Republican

Elected U.S. senator

Francis E. Warren
Republican

Notes

References

[a]

[b]

[c]

[1]

[2]

[3]

[4]

[d]

[5]

[6]

[7]

1918 United States Senate elections

Gains, losses, and holds

Retirements

Defeats

Deaths

Post-election changes

Change in composition

Before the elections

Elections results

Complete list of races

Special elections during the 65th Congress

Elections leading to the 66th Congress

Closest races

Alabama

Arkansas

Colorado

Delaware

Georgia

Idaho

Idaho (regular)

Idaho (special)

Illinois

Iowa

Kansas

Kentucky

Louisiana

Louisiana (regular)

Louisiana (special)

Maine

Massachusetts

Michigan

Minnesota

Mississippi

Missouri (special)

Montana

Nebraska

Nevada (special)

New Hampshire

New Hampshire (regular)

New Hampshire (special)

New Jersey

New Jersey (regular)

New Jersey (special)

New Mexico

North Carolina

Oklahoma

Oregon

Oregon (regular)

Oregon (special)

Rhode Island

South Carolina

South Carolina (regular)

South Carolina (special)

South Dakota

Tennessee

Texas

Virginia

West Virginia

Wisconsin (special)

Wyoming

See also

Notes

References