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26 of the 76 seats in theUnited States Senate (with special elections) 39 seats needed for a majority | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Results of the elections: Democratic gain Democratic hold Republican gain Republican hold Legislature failed to elect | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The1878–79 United States Senate elections were held on various dates in various states. As theseU.S. Senate elections were prior to the ratification of theSeventeenth Amendment in 1913, senators were chosen bystate legislatures. Senators were elected over a wide range of time throughout 1878 and 1879, and a seat may have been filled months late or remained vacant due tolegislative deadlock.[1] In these elections, terms were up for the senators inClass 3.
TheDemocratic Party recaptured control of the Senate for the first time since before theCivil War.
Senate party division,46th Congress (1879–1881)
| D8 | D7 | D6 | D5 | D4 | D3 | D2 | D1 | ||
| D9 | D10 | D11 | D12 | D13 | D14 | D15 | D16 | D17 | D18 |
| D28 | D27 | D26 | D25 | D24 | D23 | D22 | D21 | D20 | D19 |
| D29 Ran | D30 Ran | D31 Ran | D32 Ran | D33 Unknown | D34 Unknown | D35 Retired | D36 Retired | AM1 | I1 |
| Plurality → | R38 Retired | ||||||||
| R29 Unknown | R30 Unknown | R31 Retired | R32 Retired | R33 Retired | R34 Retired | R35 Retired | R36 Retired | R37 Retired | |
| R28 Ran | R27 Ran | R26 Ran | R25 Ran | R24 Ran | R23 Ran | R22 Ran | R21 | R20 | R19 |
| R9 | R10 | R11 | R12 | R13 | R14 | R15 | R16 | R17 | R18 |
| R8 | R7 | R6 | R5 | R4 | R3 | R2 | R1 | ||
| D8 | D7 | D6 | D5 | D4 | D3 | D2 | D1 | ||
| D9 | D10 | D11 | D12 | D13 | D14 | D15 | D16 | D17 | D18 |
| D28 | D27 | D26 | D25 | D24 | D23 | D22 | D21 | D20 | D19 |
| D29 Re-elected | D30 Re-elected | D31 Hold | D32 Hold | D33 Hold | D34 Hold | D35 Hold | D36 Gain | D37 Gain | D38 Gain |
| Majority → | D39 Gain | ||||||||
| R29 Hold | R30 Hold | R31 Gain | V1 R loss | AM1 | I1 | D42 Gain | D41 Gain | D40 Gain | |
| R28 Hold | R27 Re-elected | R26 Re-elected | R25 Re-elected | R24 Re-elected | R23 Re-elected | R22 Re-elected | R21 | R20 | R19 |
| R9 | R10 | R11 | R12 | R13 | R14 | R15 | R16 | R17 | R18 |
| R8 | R7 | R6 | R5 | R4 | R3 | R2 | R1 | ||
| Key |
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In these elections, the winners were seated in 1879 before March 4; ordered by election date.
| State | Incumbent | Results | Candidates | ||
|---|---|---|---|---|---|
| Senator | Party | Electoral history | |||
| Missouri (Class 3) | David H. Armstrong | Democratic | 1877(appointed) | Interim appointee retired when successor elected. New senatorelected January 27, 1879. Democratic hold. Winner did not run for the next term; see below. |
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| Indiana (Class 3) | Daniel W. Voorhees | Democratic | 1877(appointed) | Interim appointeeelected January 31, 1879. Winner was also elected to the next term; see below. |
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| Michigan (Class 1) | Isaac P. Christiancy | Republican | 1874 | Incumbent resigned February 10, 1879, due to ill health. New senatorelected February 22, 1879. Republican hold. |
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In these regular elections, the winners were elected for the term beginning March 4, 1885; ordered by state.
All of the elections involved the Class 3 seats.
| State | Incumbent | Results | Candidates | ||
|---|---|---|---|---|---|
| Senator | Party | Electoral history | |||
| Alabama | George E. Spencer | Republican | 1868(special) 1872 | Incumbent retired. New senatorelected in August 1878. Democratic gain. |
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| Arkansas | Stephen W. Dorsey | Republican | 1872–73 | Incumbent retired. New senatorelected in 1878. Democratic gain. |
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| California | Aaron A. Sargent | Republican | 1872–73 | Incumbent retired. New senatorelected in 1878. Democratic gain. |
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| Colorado | Jerome B. Chaffee | Republican | 1876 | Incumbent retired. New senatorelected in 1879. Republican hold. |
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| Connecticut | William Barnum | Democratic | 1876(special) | Incumbent retired or lost re-election. New senatorelected in 1879. Republican gain. |
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| Florida | Simon B. Conover | Republican | 1872–73 | Incumbent retired. New senatorelected January 21, 1879.[3] Democratic gain. |
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| Georgia | John B. Gordon | Democratic | 1873 | Incumbentre-elected in 1879. |
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| Illinois | Richard J. Oglesby | Republican | 1873 | Incumbent retired. New senator elected Jan 22, 1879. Republican hold. |
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| Indiana | Daniel W. Voorhees | Democratic | 1877(appointed) 1879(special) | Incumbentre-elected in 1879. |
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| Iowa | William B. Allison | Republican | 1872 | Incumbentre-elected January 23, 1878.[5] |
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| Kansas | John J. Ingalls | Republican | 1873 | Incumbentre-elected in 1879. |
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| Kentucky | Thomas C. McCreery | Democratic | 1871 | Incumbent retired. New senatorelected January 17, 1878. Democratic hold. |
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| Louisiana | James B. Eustis | Democratic | 1876(special) | Incumbent lost re-election. New senatorelected in 1879. Democratic hold. |
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| Maryland | George R. Dennis | Democratic | 1872–73 | Incumbent retired. New senatorelected January 19, 1878. Democratic hold. |
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| Missouri | James Shields | Democratic | 1849(Ill.) 1849(Ill.–election voided) 1849(Ill.–special) 1855(Ill.–lost) 1858(Minn.) 1859(Minn.–lost) 1879(Mo.–special) | Incumbent retired. New senatorelected in 1879. Democratic hold. |
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| Nevada | John P. Jones | Republican | 1873 | Incumbentre-elected in 1879. |
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| New Hampshire | Bainbridge Wadleigh | Republican | 1872 | Incumbent retired or lost re-election. Legislature failed to elect. Republican loss. | [data missing] |
| New York | Roscoe Conkling | Republican | 1867 1873 | Incumbentre-elected January 22, 1879. |
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| North Carolina | Augustus Merrimon | Democratic | 1872 | Incumbent lost re-election. New senatorelected in 1879. Democratic hold. |
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| Ohio | Stanley Matthews | Republican | 1877(special) | Incumbent retired. New senator elected in 1878 or 1879. Democratic gain. |
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| Oregon | John H. Mitchell | Republican | 1872 | Incumbent retired. New senator elected in 1878 or 1879. Democratic gain. |
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| Pennsylvania | J. Donald Cameron | Republican | 1877(special) | Incumbentre-elected January 20, 1879. |
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| South Carolina | John J. Patterson | Republican | 1872–73 | Incumbent retired or lost re-election. New senatorelected in 1878. Democratic gain. |
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| Vermont | Justin S. Morrill | Republican | 1866 1872 | Incumbentre-elected in 1878. |
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| Wisconsin | Timothy O. Howe | Republican | 1861 1866 1872 | Incumbent lost re-nomination. New senatorelected January 22, 1879.[7][8] Republican hold. |
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In this election, the winner was elected in 1879 after March 4.
| State | Incumbent | Results | Candidates | ||
|---|---|---|---|---|---|
| Senator | Party | Electoral history | |||
| New Hampshire (Class 3) | Charles H. Bell | Republican | 1879(appointed) | Legislature had failed to elect; see above. Interim appointee retired when successor elected. New senatorelected June 17, 1879. Republican hold. |
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80 members of theMaryland General Assembly | ||||||||||||||||
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James Black Groome was elected by a margin of 60.22%, or 56 votes, for the Class 3 seat.[9]

In New York, the election was held on January 21, 1879, by theNew York State Legislature. RepublicanRoscoe Conkling had been re-elected in January 1873 to this seat, and his term would expire on March 3, 1879. At theState election in November 1877, 19 Republicans and 13 Democrats were elected for a two-year term (1878–1879) in the State Senate. At theState election in November 1878, 97 Republicans, 28 Democrats and 3 Greenbackers were elected for the session of 1879 to the Assembly, and RepublicanThomas Murphy was elected to fill the vacancy in the State Senate caused by the death of DemocratJohn Morrissey. The102nd New York State Legislature met from January 7 to May 22, 1879, atAlbany, New York.
The caucus ofRepublican State legislators met on January 20, Temporary President of the State SenateWilliam H. Robertson presided. Present were all Republican legislators except State SenatorLouis S. Goebel[10] (6th D.) and AssemblymanJames W. Wadsworth. They re-nominated the incumbent U.S. Senator Conkling unanimously. The caucus of theDemocratic State legislators met also on January 20. State SenatorThomas C. E. Ecclesine (8th D.) offered to adopt a prostest against the senatorial election proceedings, claiming that the senatorial and assembly districts were incorrectly apportioned and thus the State Legislature did not represent the wish of the people of the State. The protest was substituted by a resolution to appoint a committee which would elaborate an address on the apportionment at a later date. Ecclesine then marched out, and the remaining legislators nominated Lieutenant GovernorWilliam Dorsheimer for the U.S. Senate.
| Candidate | First ballot | Second ballot |
|---|---|---|
| William Dorsheimer | 11 | 18 |
| James F. Starbuck | 8 | 8 |
| DeWitt C. West[11] | 8 | 6 |
| Elijah Ward | 2 |
The two Greenback assemblymen John Banfield (Chemung Co.) and George E. Williams (Oswego Co.) voted for 87-year-oldPeter Cooper, aNew York City inventor, industrialist and philanthropist who hadrun for U.S. president in 1876 on the Greenback ticket.
Roscoe Conkling was the choice of both the Assembly and the State Senate, and was declared elected.
| Republican | Democrat | Greenback | ||||
|---|---|---|---|---|---|---|
| State Senate (32 members) | Roscoe Conkling | 20 | William Dorsheimer | 12 | ||
| State Assembly (128 members) | Roscoe Conkling | 95 | William Dorsheimer | 23 | Peter Cooper | 2 |
Note: The votes were cast on January 21, but both Houses met in a joint session on January 22 to compare nominations, and declare the result.

In Pennsylvania, the election was held January 20, 1879.J. Donald Cameron was re-elected by thePennsylvania General Assembly to theUnited States Senate.[12]
After Sen.Simon Cameron resigned from office, his son J. Donald Cameron was elected by the General Assembly, consisting of theHouse of Representatives and theSenate, in1877 to serve the remainder of the unexpired term, which was to expire on March 4, 1879. The Pennsylvania General Assembly convened on January 20, 1879, to elect a Senator to serve the term beginning on March 4, 1879. The results of the vote of both houses combined are as follows:
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Republican | J. Donald Cameron (Inc.) | 135 | 53.78 | |
| Democratic | Hiester Clymer | 92 | 36.65 | |
| Greenback | Daniel Agnew | 16 | 6.37 | |
| Republican | Edward McPherson | 3 | 1.20 | |
| Republican | Russell Thayer | 1 | 0.40 | |
| Republican | Galusha A. Grow | 1 | 0.40 | |
| N/A | Not voting | 3 | 1.20 | |
| Totals | 251 | 100.00% | ||