1918 United States Senate elections

November 5, 1918[lower-alpha 1]

38 of the 96 seats in the United States Senate
49 seats needed for a majority
  Majority party Minority party
 
Leader Henry Cabot Lodge[lower-alpha 2] Oscar Underwood
Party Republican Democratic
Leader since March 4, 1919 April 27, 1920
Leader's seat Massachusetts Alabama
Seats before 43 53
Seats after 49 47
Seat change Increase 6 Decrease 6
Seats up 17 24
Seats won 23 18

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,[lower-alpha 1] 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
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[lower-alpha 3]
D33
Ga.
Hold
D32
Ark.
Re-elected
D31
Ala.
Re-elected
D30 D29
D39
Miss.
Hold
D40
Mont.
Re-elected
D41
Nev.
Elected[lower-alpha 3]
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 →
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[lower-alpha 3]
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
Senator Party Electoral history
Wisconsin
(Class 3)
Paul O. Husting Democratic 1914 Incumbent died October 21, 1917.
New senator elected April 2, 1918.
Republican gain.
Idaho
(Class 3)
John F. Nugent Democratic 1918 (Appointed) Interim appointee elected November 5, 1918.
Louisiana
(Class 3)
Walter Guion Democratic 1918 (Appointed) Interim appointee retired.
New senator elected November 5, 1918.
Democratic hold.
Missouri
(Class 3)
Xenophon P. Wilfley Democratic 1918 (Appointed) Interim appointee lost nomination.
New senator elected November 5, 1918.
Republican gain.
Nevada
(Class 3)
Charles Henderson Democratic 1918 (Appointed) Interim appointee elected November 5, 1918.
New Hampshire
(Class 3)
Irving W. Drew Republican 1918 (Appointed) Interim appointee retired.
New senator elected November 5, 1918.
Republican hold.
  • Green tickY 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.
  • Green tickY 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.
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.

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
Senator Party Electoral history
Alabama John H. Bankhead Democratic 1907 (Appointed)
1907 (special)
1911 (Early)
Incumbent re-elected.
Arkansas Joseph T. Robinson Democratic 1913 Incumbent re-elected.
Colorado John F. Shafroth Democratic 1913 Incumbent lost re-election.
New senator elected.
Republican gain.
Delaware Willard Saulsbury Jr. Democratic 1913 Incumbent lost re-election.
New senator elected.
Republican gain.
Georgia Thomas W. Hardwick Democratic 1914 (special) Incumbent lost renomination.
New senator elected.
Democratic hold.
Idaho William Borah Republican 1907
1913
Incumbent re-elected.
  • Green tickY 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.
Iowa William S. Kenyon Republican 1911 (special)
1913
Incumbent re-elected.
Kansas William H. Thompson Democratic 1913 Incumbent lost re-election.
New senator elected.
Republican gain.
Kentucky George B. Martin Democratic 1918 (Appointed) Incumbent retired.
New senator elected.
Democratic hold.
Louisiana Joseph E. Ransdell Democratic 1912 Incumbent re-elected.
Maine Bert M. Fernald Republican 1916 (special) Incumbent re-elected September 9, 1918.
Massachusetts John W. Weeks Republican 1913 Incumbent lost re-election.
New senator elected.
Democratic gain.
Michigan William Alden Smith Republican 1911
1913
Incumbent retired.
New senator elected.
Republican hold.
  • Green tickY 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.
Mississippi James K. Vardaman Democratic 1912 Incumbent lost renomination.
New senator elected.
  • Green tickY Pat Harrison (Democratic) 95.04%
  • Summer W. Rose (Socialist) 4.96%[2]:1451
Montana Thomas J. Walsh Democratic 1913 Incumbent re-elected.
Nebraska George W. Norris Republican 1913 Incumbent re-elected.
New Hampshire Henry F. Hollis Democratic 1913 Incumbent retired.
New senator elected.
Republican gain.
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.
  • Green tickY 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.
North Carolina F. M. Simmons Democratic 1901
1907
1913
Incumbent re-elected.
Oklahoma Robert L. Owen Democratic 1907 (New state)
1913
Incumbent re-elected.
  • Green tickY 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.
Rhode Island LeBaron B. Colt Republican 1913 Incumbent re-elected.
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.
South Dakota Thomas Sterling Republican 1913 Incumbent re-elected.
  • Green tickY 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.
Texas Morris Sheppard Democratic 1913 (special) Incumbent re-elected.
  • Green tickY 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.
West Virginia Nathan Goff Jr. Republican 1913 Incumbent retired.
New senator elected.
Republican hold.
Wyoming Francis E. Warren Republican 1890
1893 (Lost)
1895
1901
1907
1913
Incumbent re-elected.

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%[lower-alpha 4]
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

 
Nominee John H. Bankhead
Party Democratic
Popular vote 54,880
Percentage 100.00%

U.S. senator before election

John H. Bankhead
Democratic

Elected U.S. senator

John H. Bankhead
Democratic

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

 
Nominee Joseph T. Robinson
Party Democratic
Popular vote 78,377
Percentage 100.00%

U.S. senator before election

Joseph T. Robinson
Democratic

Elected U.S. senator

Joseph T. Robinson
Democratic

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

Colorado

Colorado election

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

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

 
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

 
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

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

U.S. senator before election

William Borah
Republican

Elected U.S. senator

William Borah
Republican

Idaho (special)

Idaho special election

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

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

Illinois election

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

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

 
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

Dr. Eva Harding, Socialist candidate in the 1918 U.S. Senate election in Kansas.
Kansas election

 
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

 
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

 
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

September 10, 1918
 
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

September 9, 1918
 
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

Massachusetts election

 
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%

Senator before election

John W. Weeks
Republican

Elected Senator

David I. Walsh
Democratic

Michigan

Michigan election

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

U.S. senator before election

William Alden Smith
Republican

Elected U.S. Senator

Truman H. Newberry
Republican

1918 United States Senate election in Michigan[3]:429
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%
Party Candidate Votes %
Majority 7,567 1.72
Total votes 438,437 100.00
Republican hold

Minnesota

Minnesota election

 
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

Mississippi election

August 1, 1918
 
Nominee Pat Harrison James K. Vardaman Edmund Noel
Party Democratic Democratic Democratic
Popular vote 56,715 44,154 6,730
Percentage 52.71% 41.04% 6.26%

U.S. senator before election

James K. Vardaman
Democratic

Elected U.S. senator

Pat Harrison
Democratic

Missouri (special)

Missouri special election

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

U.S. senator before election

Xenophon P. Wilfley
Democratic

Elected U.S. senator

Selden P. Spencer
Republican

Montana

Montana election

 
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

 
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

 
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

 
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

 
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

November 7, 1918
 
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

 
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

 
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

 
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

 
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

 
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

 
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

 
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

August 27, 1918
 
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

September 10, 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

 
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

Tennessee election

 
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

Texas

Texas election

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

U.S. senator before election

Morris Sheppard
Democratic

Elected U.S. Senator

Morris Sheppard
Democratic

Virginia

Virginia election

 
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

 
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

April 2, 1918
 
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

 
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

See also

Notes

  1. 1 2 There was a general election September 9, 1918, in Maine, and special elections in April and November 1918.
  2. as Republican Conference Chairman
  3. 1 2 3 Appointee elected
  4. New Hampshire (special) was the "tipping-point state".

References

  1. 1 2 The Wisconsin Blue Book. 1919. Madison: Democrat Printing Co. 1919. p. 46.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Kalb, Deborah, ed. (2010). Guide to U.S. Elections. Washington, DC: CQ Press. ISBN 978-1-60426-536-1.
  3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Dubin, Michael J. (1998). United States Congressional Elections, 1788-1997: The Official Results. Jefferson: McFarland & Company. ISBN 0-7864-0283-0.
  4. 1919 Official Directory of Wyoming and Election Returns For 1918. Wyoming official directory and election returns. W. E. Chaplin, Wyoming Secretary of State. pp. 36–37. Retrieved January 23, 2018.
  5. 1 2 3 Jordan, Frank E. (1966). The Primary State: A History of the Democratic Party in South Carolina, 1876-1962. Columbia. pp. 64–66.{{cite book}}: CS1 maint: location missing publisher (link)
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