List of United States Senate elections

Key:
A# or
AJ#		 Adams or Anti-Jacksonian
AA# Anti-Administration
D# Democratic
DR# Democratic-Republican
DRa# Democratic-Republican (Adams-Clay)
DRc# Democratic-Republican (Crawford)
DRj# Democratic-Republican (Jackson)
F# Federalist
Fa# Federalist (Adams-Clay)
FL# Farmer-Labor
FS# Free Soil
I# Independent
ID# Independent Democratic
J# Jacksonian
KN# Know Nothing
N# Nullfier
P# Pro-Administration
Pg# Progressive
RA# Readjuster
R# Republican
U# Unionist
UU# Unconditional Unionist
V# Vacant

United States Senate elections, 1788 and 1789

Note: There were no political parties in this Congress. Members are informally grouped into factions of similar interest, based on an analysis of their voting record.[1]

V1
AA1 AA2 AA3 AA4 AA5 AA6 AA7 P13 P12 P11
Majority →
P1 P2 P3 P4 P5 P6 P7 P8 P9 P10
V2

United States Senate elections, 1790 and 1791

Note: There were no political parties in this Congress. Members are informally grouped into factions of similar interest, based on an analysis of their voting record.[1]

AA7 AA8 AA9
AA6 AA5 AA4 AA3 AA2 AA1 V1 P16 P15 P14
Majority →
P4 P5 P6 P7 P8 P9 P10 P11 P12 P13
P3 P2 P1

United States Senate elections, 1792 and 1793

Note: There were no political parties in this Congress. Members are informally grouped into factions of similar interest, based on an analysis of their voting record.[1]

AA4 AA3 AA2 AA1 V1
AA5 AA6
Gain		 AA7
Gain		 AA8 AA9 AA10 AA11 P18 P17 P16
Majority →
P6 P7 P8 P9 P10 P11 P12 P13 P14 P15
P5 P4 P3 P2 P1

United States Senate elections, 1794 and 1795

AA5 AA4 AA3 AA2 AA1
AA6 AA7
Hold		 AA8
Hold		 DR1
Gain		 DR2
Gain		 F9
Gain		 F8
Gain		 F7
Gain		 F6
Gain		 F5
Gain
Majority →
P6 P7 P8 P9 P10 P11
Hold		 F1
Gain		 F2
Gain		 F3
Gain		 F4
Gain
P5 P4 P3 P2 P1

United States Senate elections, 1796 and 1797

DR6 DR5 DR4 DR3 DR2 DR1
DR7
Re-elected		 DR8
Hold		 DR9
Hold		 DR10
Gain		 V1
Gain		 F21
Gain		 F20
Hold		 F19
Hold		 F18
Hold		 F17
Hold
Majority →
F7
Re-elected		 F8
Re-elected		 F9
Re-elected		 F10
Re-elected		 F11
Re-elected		 F12
Hold		 F13
Hold		 F14
Hold		 F15
Hold		 F16
Hold
F6 F5 F4 F3 F2 F1

United States Senate elections, 1798 and 1799

DR6
Re-elected		 DR5
Re-elected		 DR4 DR3 DR2 DR1
DR7
Hold		 DR8
Hold		 DR9
Hold		 V1
DR loss		 F22
Hold		 F21
Hold		 F20
Re-elected		 F19
Re-elected		 F18
Re-elected		 F17
Majority →
F7 F8 F9 F10 F11 F12 F13 F14 F15 F16
F6 F5 F4 F3 F2 F1

United States Senate elections, 1800 and 1801

DR6 DR5 DR4 DR3 DR2 DR1
DR7 DR8 DR9
Re-elected		 DR10
Hold		 DR11
Gain		 DR12
Gain		 DR13
Gain		 DR14
Gain		 V1
F loss		 F17
Gain
Majority →
F16
Re-elected
F7 F8 F9 F10 F11 F12 F13 F14 F15
Re-elected
F6 F5 F4 F3 F2 F1

United States Senate elections, 1802 and 1803

DR6 DR5 DR4 DR3 DR2 DR1
DR7 DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15 DR16
Re-elected
Majority → DR17
Re-elected
F7
Re-elected		 F8
Re-elected		 F9
Hold		 V1
Fed loss		 DR22
Gain		 DR21
Gain		 DR20
Gain		 DR19
Gain		 DR18
Gain
F6 F5 F4 F3 F2 F1

United States Senate elections, 1804 and 1805

DR7 DR6 DR5 DR4 DR3 DR2 DR1
DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15 DR16 DR17
Majority → DR18
DR27
Gain		 DR26
Gain		 DR25
Hold		 DR24
Hold		 DR23
Hold		 DR22
Hold		 DR21
Re-elected		 DR20
Re-elected		 DR19
Re-elected
F7
Re-elected		 F6
Re-elected		 F5 F4 F3 F2 F1

United States Senate elections, 1806 and 1807

DR7 DR6 DR5 DR4 DR3 DR2 DR1
DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15 DR16 DR17
Majority → DR18
DR27
Hold		 DR26
Hold		 DR25
Hold		 DR24
Re-elected		 DR23
Re-elected		 DR22
Re-elected		 DR21
Re-elected		 DR20
Re-elected		 DR19
Re-elected
DR28
Gain		 F6
Re-elected		 F5 F4 F3 F2 F1

United States Senate elections, 1808 and 1809

DR7 DR6 DR5 DR4 DR3 DR2 DR1
DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15 DR16 DR17
Majority → DR18
DR27
Hold		 DR26
Hold		 DR25
Hold		 DR24
Re-elected		 DR23
Re-elected		 DR22
Re-elected		 DR21
Re-elected		 DR20
Re-elected		 DR19
F7
Gain		 F6
Hold		 F5
Re-elected		 F4
Re-elected		 F3 F2 F1

United States Senate elections, 1810 and 1811

DR7 DR6 DR5 DR4 DR3 DR2 DR1
DR8 DR9 DR10 DR11 DR12 DR13 DR14 DR15 DR16 DR17
Majority → DR18
Re-elected
DR27
Gain		 DR26
Hold		 DR25
Hold		 DR24
Re-elected		 DR23
Re-elected		 DR22
Re-elected		 DR21
Re-elected		 DR20
Re-elected		 DR19
Re-elected
F7
Re-elected		 F6 F5 F4 F3 F2 F1

United States Senate elections, 1812 and 1813

DR8 DR7 DR6 DR5 DR4 DR3 DR2 DR1
DR9 DR10 DR11 DR12 DR13 DR14 DR15 DR16 DR17 DR18
Majority → DR19
DR28
Hold		 DR27
Hold		 DR26
Hold		 DR25
Hold		 DR24
Hold		 DR23
Hold		 DR22
Re-elected		 DR21
Re-elected		 DR20
F8
Gain		 F7
Gain		 F6
Hold		 F5
Re-elected		 F4 F3 F2 F1

United States Senate elections, 1814 and 1815

DR8 DR7 DR6 DR5 DR4 DR3 DR2 DR1
DR9 DR10 DR11 DR12 DR13 DR14 DR15 DR16 DR17 DR18
Re-elected
Majority → DR19
Hold
F9
Re-elected		 F10
Re-elected		 F11
Gain		 V1 V2 V3 DR22
Hold		 DR21
Hold		 DR20
Hold
F8
Re-elected		 F7
Re-elected		 F6 F5 F4 F3 F2 F1

United States Senate elections, 1816 and 1817

DR9 DR8 DR7 DR6 DR5 DR4 DR3 DR2 DR1
DR10 DR11 DR12 DR13 DR14 DR15
Gain		 DR16
Gain		 DR17
Re-elected		 DR18
Hold		 DR19
Hold
Majority → DR20
Hold
F10 F11
Hold		 F12
Gain		 F13
Gain		 DR25
Gain		 DR24
Gain		 DR23
Hold		 DR22
Hold		 DR21
Hold
F9 F8 F7 F6 F5 F4 F3 F2 F1

United States Senate elections, 1818 and 1819

  V1
DR9 DR8 DR7 DR6 DR5 DR4 DR3 DR2 DR1 V2
DR10 DR11 DR12 DR13 DR14 DR15 DR16 DR17
Gain		 DR18
Gain
Re-elected		 DR19
Re-elected
Majority → DR20
Re-elected
DR29
Gain		 DR28
Hold		 DR27
Hold		 DR26
Hold		 DR25
Hold		 DR24
Hold		 DR23
Hold		 DR22
Hold		 DR21
Re-elected
DR30
Gain		 V3 F9 F8 F7 F6 F5 F4 F3 F2
  F1

United States Senate elections, 1820 and 1821

DR1 DR2 DR3
DR13 DR12 DR11 DR10 DR9 DR8 DR7 DR6 DR5 DR4
DR14 DR15 DR16 DR17 DR18 DR19 DR20 DR21 DR22 DR23
Majority → DR24
DR33
Hold		 DR32
Re-elected		 DR31
Re-elected		 DR30
Re-elected		 DR29
Re-elected		 DR28
Re-elected		 DR27 DR26 DR25
DR34
Hold		 DR35
Hold		 DR36
Gain		 DR37
Gain		 DR38
Gain		 DR39
Gain		 V1 V2 V3 F4
Re-elected
F1 F2 F3

United States Senate elections, 1822 and 1823

DR1 DR2 DR3 DR4
DR14 DR13 DR12 DR11 DR10 DR9 DR8 DR7 DR6 DR5
DR15 DR16 DR17 DR18 DR119 DR20 DR21 DR22 DR23 DR24
Majority → DR25
DR34
Hold		 DR33
Hold		 DR32
Hold		 DR31
Hold		 DR30 DR29 DR28 DR27 DR26
DR35
Re-elected		 DR36
Re-elected		 DR37
Re-elected		 DR38
Re-elected		 DR39
Re-elected		 DR40
Re-elected		 DR41
Re-elected		 DR42
Re-elected		 DR43
Re-elected		 DR44
Re-elected
F1 F2 F3
Re-elected		 V1

United States Senate elections, 1824 and 1825

  J1
Gain		 AJ1
Gain		 J2
Gain		 AJ2
Gain
DRc3 DRc2 DRc1 DRa11 DRa10 DRa9 AJ3
Gain		 AJ4
Gain		 J3
Gain		 AJ5
Gain
DRc4 DRc5 DRc6 DRc7 DRc8 DRc9 J4
Gain		 J5
Gain		 J6
Gain		 V1
DR Loss
 
DRj3 DRj2 DRj1 DRc20 DRc19 DRc18 DRc17 DRc16 AJ6
Gain		 J7
Gain
DRj4 DRj5 DRj6 DRj7 DRj8 DRj9 DRj10 DRj11 J8
Gain		 V2
Fa Loss
  Fa1 Fa2 Fa3 Fa4

United States Senate elections, 1826 and 1827

A1 A2 A3 A4
A14 A13 A12 A11 A10 A9 A8 A7 A6 A5
A15
Re-elected		 A16
Re-elected		 A17
Re-elected		 A18
Re-elected		 A19
Hold		 A20
Gain		 V1
Gain		 J27
Gain		 J26
Gain		 J25
Hold
Majority → J24
Hold
J15 J16 J17 J18 J19
Re-elected		 J20
Re-elected		 J21
Re-elected		 J22
Re-elected		 J23
Hold
J14 J13 J12 J11 J10 J9 J8 J7 J6 J5
J1 J2 J3 J4

United States Senate elections, 1828 and 1829

AJ1 AJ2 AJ3 AJ4
AJ14 AJ13 AJ12 AJ11 AJ10 AJ9 AJ8 AJ7 AJ6 AJ5
AJ15 AJ16 AJ17
Re-elected		 AJ18
Re-elected		 AJ19
Re-elected		 AJ20
Gain		 AJ21
Gain		 AJ22
Gain		 J26
Gain		 J25
Gain
Majority → J24
Hold
J15 J16 J17
Re-elected		 J18
Re-elected		 J19
Re-elected		 J20
Re-elected		 J21
Re-elected		 J22
Hold		 J23
Hold
J14 J13 J12 J11 J10 J9 J8 J7 J6 J5
J1 J2 J3 J4

United States Senate elections, 1830 and 1831

AJ1 AJ2 AJ3 AJ4
AJ14 AJ13 AJ12 AJ11 AJ10 AJ9 AJ8 AJ7 AJ6 AJ5
AJ15
Re-elected		 AJ16
Re-elected		 AJ17
Re-elected		 AJ18
Hold		 AJ19
Hold		 AJ20
Hold		 V1 N1
Gain		 J26
Gain		 J25
Gain
Majority → J24
Gain
J15 J16 J17 J18 J19
Re-elected		 J20
Re-elected		 J21
Hold		 J22
Hold		 J23
Hold
J14 J13 J12 J11 J10 J9 J8 J7 J6 J5
J1 J2 J3 J4

United States Senate elections, 1832 and 1833

AJ1 AJ2 AJ3 AJ4
AJ14 AJ13 AJ12 AJ11 AJ10 AJ9 AJ8 AJ7 AJ6 AJ5
AJ15 AJ16
Re-elected		 AJ17
Re-elected		 AJ18
Re-elected		 AJ19
Hold		 AJ20
Hold		 AJ21
Gain		 AJ22
Gain		 AJ23
Gain		 N1
Plurality ↑ N2
J15 J16
Re-elected		 J17
Re-elected		 J18
Re-elected		 J19
Hold		 J20
Gain		 J21
Gain		 V1
Loss		 V2
Loss
J14 J13 J12 J11 J10 J9 J8 J7 J6 J5
J1 J2 J3 J4

United States Senate elections, 1834 and 1835

AJ1 AJ2 AJ3 AJ4
AJ14 AJ13 AJ12 AJ11 AJ10 AJ9 AJ8 AJ7 AJ6 AJ5
AJ15 AJ16 AJ17 AJ18 AJ19
Re-elected		 AJ20
Re-elected		 AJ21
Re-elected		 AJ22
Hold		 AJ23
Gain		 AJ24
Gain
Plurality →
J15
Re-elected		 J16
Re-elected		 J17
Re-elected		 J18
Re-elected		 J19
Gain		 J20
Gain		 J21
Gain		 N1 N2
Re-elected		 V1
Loss
J14
Re-elected		 J13 J12 J11 J10 J9 J8 J7 J6 J5
J1 J2 J3 J4

United States Senate elections, 1836 and 1837

AJ1 AJ2 AJ3 AJ4 AJ5 AJ6
W16
Re-elected
New party		 W15
Re-elected
New party		 W14
Re-elected
New party		 W13
Re-elected
New party		 AJ12 AJ11 AJ10 AJ9 AJ8 AJ7
W17
Hold
New party		 N1 D34
Gain		 D33
Gain		 D32
Gain		 D31
Hold
New party		 D30
Hold
New party		 D29
Re-elected
New party		 D28
Re-elected
New party		 D27
Re-elected
New party
Majority →
J17 J18 J19 J20 J21 J22 D23
Re-elected
New party		 D24
Re-elected
New party		 D25
Re-elected
New party		 D26
Re-elected
New party
J16 J15 J14 J13 J12 J11 J10 J9 J8 J7
J1 J2 J3 J4 J5 J6

United States Senate elections, 1838 and 1839

D1 D2 D3 D4 D5 D6
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7
D17 D18 D19 D20 D21 D22 D23 D24 D25 D26
Re-elected
Majority → D27
Re-elected
W17
Hold		 W18
Gain		 W19
Gain		 W20
Gain		 V4
D Loss		 V3
D Loss		 V2
D Loss		 V1
D Loss		 D28
Hold
W16
Hold		 W15
Re-elected		 W14
Re-elected		 W13
Re-elected		 W12
Re-elected		 W11
Re-elected		 W10 W9 W8 W7
W1 W2 W3 W4 W5 W6

United States Senate elections, 1840 and 1841

D1 D2 D3 D4 D5 D6
D16 D15 D14 D13 D12 D11 D10 D9 D8 D7
D17
Re-elected		 D18
Re-elected		 D19
Re-elected		 D20
Hold		 D21
Hold		 D22
Re-elected		 V3
D Loss		 V2 V1 W27
Gain
Majority →
W17
Hold		 W18
Re-elected		 W19
Hold		 W20
Hold		 W21
Re-elected		 W22
Gain		 W23
Gain		 W24
Gain		 W25
Gain		 W26
Gain
W16 W15 W14 W13 W12 W11 W10 W9 W8 W7
W1 W2 W3 W4 W5 W6

United States Senate elections, 1842 and 1843

D1 D2 D3 D4 D5 D6
D16
Re-elected		 D15
Re-elected		 D14
Re-elected		 D13
Re-elected		 D12
Re-elected		 D11
Re-elected		 D10 D9 D8 D7
D17
Re-elected		 D18
Hold		 D19
Hold		 D20
Hold		 D21
Hold		 D22
Gain		 D23
Gain		 V2 V1 W27
Hold
Majority → W26
Hold
W17 W18 W19 W20 W21 W22 W23 W24
Re-elected		 W25
Re-elected
W16 W15 W14 W13 W12 W11 W10 W9 W8 W7
W1 W2 W3 W4 W5 W6

United States Senate elections, 1844 and 1845

D1 D2 D3 D4 D5 D6 D7
D17 D16 D15 D14 D13 D12 D11 D10 D9 D8
D18 D19 D20
Re-elected		 D21
Re-elected		 D22
Re-elected		 D23
Re-elected		 D24
Gain		 D25
Gain		 D26
Gain		 D27
Gain
Majority →
W18
Re-elected		 W19
Re-elected		 W20
Hold		 W21
Hold		 W22
Hold		 W23
Gain		 W24
Gain		 V1
W Loss		 V2
New seat		 V3
New seat
W17
Re-elected		 W16 W15 W14 W13 W12 W11 W10 W9 W8
W1 W2 W3 W4 W5 W6 W7

United States Senate elections, 1846 and 1847

D1 D2 D3 D4 D5 D6 D7 D8 D9
D19 D18 D17 D16 D15 D14 D13 D12 D11 D10
D20 D21 D22 D23 D24 D25 D26
Re-elected		 D27
Re-elected		 D28
Re-elected		 D29
Re-elected
Majority → D30
Hold
V1
W Loss		 V2
New state		 V3
New state		 ID1
Gain		 D35
Gain		 D34
Gain		 D33
Gain		 D32
Hold		 D31
Hold
W19
Hold		 W18
Hold		 W17
Hold		 W16
Re-elected		 W15
Re-elected		 W14
Re-elected		 W13
Re-elected		 W12 W11 W10
W1 W2 W3 W4 W5 W6 W7 W8 W9

United States Senate elections, 1848 and 1849

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25
Re-elected		 D26
Re-elected		 D27
Re-elected		 D28
Re-elected		 D29
Re-elected		 D30
Hold
Majority → D31
Hold
W21
Gain		 W22
Gain		 W23
Gain		 W24
Gain		 W25
Gain		 ID1 FS1
Gain		 D33
Gain		 D32
Hold
W20
Hold		 W19
Re-elected		 W18
Re-elected		 W17
Re-elected		 W16 W15 W14 W13 W12 W11
W1 W2 W3 W4 W5 W6 W7 W8 W9 W10

United States Senate elections, 1850 and 1851

D1
D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
D21 D20 D19 D18 D17 D16 D15 D14 D13 D12
D22 D23
Re-elected		 D24
Re-elected		 D25
Re-elected		 D26
Re-elected		 D27
Re-elected		 D28
Re-elected		 D29
Re-elected		 D30
Hold		 D31
Hold
Majority → D32
Gain
V1
W Loss		 V2
W Loss		 FS1 FS2 V3
D Loss		 V4
D Loss		 V5
D Loss		 D34
Gain		 D33
Gain
W21
Gain		 W20
Gain		 W19
Hold		 W18
Re-elected		 W17 W16 W15 W14 W13 W12
W2 W3 W4 W5 W6 W7 W8 W9 W10 W11
W1

United States Senate elections, 1852 and 1853

D1
D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
D21 D20 D19 D18 D17 D16 D15 D14 D13 D12
D22 D23 D24 D25 D26 D27
Re-elected		 D28
Re-elected		 D29
Re-elected		 D30
Re-elected		 D31
Re-elected
Majority → D32
Hold
KN1
Gain		 FS1 FS2 V1
D Loss		 V2
D Loss		 D36
Gain		 D35
Gain		 D34
Hold		 D33
Hold
V3
W Loss		 V4
W Loss		 V5
W Loss		 W18
Gain		 W17
Hold		 W16
Hold		 W15
Re-elected		 W14 W13 W12
W2 W3 W4 W5 W6 W7 W8 W9 W10 W11
W1

United States Senate elections, 1854 and 1855

D1
D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
D21 D20 D19 D18 D17 D16 D15 D14 D13 D12
D22 D23 D24 D25 D26
Re-elected		 D27
Re-elected		 D28
Re-elected		 D29
Hold		 D30
Gain		 D31
Gain
Majority → D32
Gain
V2 V3 V4 V5
D Loss		 V6
D Loss		 V7
D Loss		 V8
D Loss		 V9
D Loss		 D33
Gain
V1
W Loss		 KN1 FS2
Gain		 FS1 R3
Gain		 R2
Gain		 R1
Gain		 W14
Hold		 W13
Re-elected		 W12
Re-elected
W2 W3 W4 W5 W6 W7 W8 W9 W10 W11
W1

United States Senate elections, 1856 and 1857

D1
D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
D21 D20 D19 D18 D17 D16 D15 D14 D13 D12
D22 D23 D24 D25 D26
Re-elected		 D27
Re-elected		 D28
Re-elected		 D29
Re-elected		 D30
Re-elected		 D31
Re-elected
Majority → D32
Hold
FS1 KN1 KN2
Gain		 V1
W Loss		 V2 V3 V4 D34
Gain		 D33
Hold
R15
Gain		 R14
Re-elected
Diff. party		 R13
Hold		 R12
Re-elected		 R11
Re-elected		 R10 R9 R8 R7 R6
W2 W3 R1
Gain		 R2
Gain		 R3
Gain		 R4
Gain		 R5
Gain		 R1 R2 R3
W1

United States Senate elections, 1858 and 1859

D3 D2 D1
D4 D5 D6 D7 D8 D9 D10 D11 D12 D13
D23 D22 D21 D20 D19 D18 D17 D16 D15 D14
D24 D25 D26
Re-elected		 D27
Re-elected		 D28
Re-elected		 D29
Re-elected		 D30
Re-elected		 D31
Re-elected		 D32
Re-elected		 D33
Hold
Majority → D34
Hold
R24
Gain		 R25
Gain		 KN1 KN2 V1
D Loss		 D38
Gain		 D37
Gain		 D36
Hold		 D35
Hold
R23
Gain		 R22
Gain		 R21
Gain		 R20
Re-elected		 R19
Re-elected		 R18
Re-elected		 R17 R16 R15 R14
R4 R5 R6 R7 R8 R9 R10 R11 R12 R13
R3 R2 R1

United States Senate elections, 1860 and 1861

V3
D Loss		 V2
D Loss		 V1
D Loss
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D23 D22 D24 D25
Re-elected		 D26
Re-elected		 D27
Hold		 D28
Hold		 D29
Hold		 D30
Gain
Plurality ↑ KN1
R21
Re-elected		 R22
Re-elected		 R23
Re-elected		 R24
Re-elected		 R25
Hold		 R26
Hold		 R27
Gain		 R28
Gain		 R29
Gain
R20
Re-elected		 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10
V4
D Loss		 V5
D Loss		 V6
D Loss

United States Senate elections, 1862 and 1863

V4 V3 V2 V1
V5 V6 V7
No race		 V8
No race		 V9
No race		 V10
No race		 D1 D2 D3 D4
U4
Hold		 U3 U2 U1 D10
Gain		 D9
Hold		 D8
Hold		 D7
Re-elected		 D6 D5
U5
Hold		 UU1
Gain		 R32
Gain		 R31
Gain		 R30
Re-elected		 R29
Re-elected		 R28
Hold		 R27
Hold		 R26
Re-elected		 R25
Re-elected
Majority →
R15 R16 R17 R18 R19 R20 R21 R22
Re-elected		 R23
Re-elected		 R24
Re-elected
R14 R13 R12 R11 R10 R9 R8 R7 R6 R5
V16 V15 V14 V13 V12 V11 R1 R2 R3 R4
V17 V18 V19 V20

United States Senate elections, 1864 and 1865

V5
Seceded		 V4
Seceded		 V3
Seceded		 V2 V1
V6
Seceded		 V7
Seceded		 V8
Seceded		 V9
Seceded		 V10
Seceded		 V11
Seceded		 D1 D2 D3 D4
UU2 UU3 UU4 U1 U2 D9
Gain		 D8
Hold		 D7
Re-elected		 D6 D5
UU1 R33
Gain		 R32
Gain		 R31
Re-elected
new party		 R30
Hold		 R29
Hold		 R28
Hold		 R27
Re-elected		 R26
Re-elected		 R25
Re-elected
Majority →
R15 R16 R17 R18 R19 R20 R21 R22 R23
Re-elected		 R24
Re-elected
R14 R13 R12 R11 R10 R9 R8 R7 R6 R5
V17 V16 V15 V14 V13 V12
U Loss		 R1 R2 R3 R4
V18 V19 V20 V21 V22

United States Senate elections, 1866 and 1867

V6
Seceded		 V5
Seceded		 V4
Seceded		 V3
Seceded		 V2 V1
V7
Seceded		 V8
Seceded		 V9
Seceded		 V10
Seceded		 D1 D2 D3 D4 D5 D6
R37
Hold		 R38
Gain		 R39
Gain		 UU1 U1 U2 D10
Gain		 D9
Gain		 D8 D7
R36
Hold		 R35
Hold		 R34
Hold		 R33
Hold		 R32
Hold		 R31
Hold		 R30
Hold		 R29
Re-elected		 R28
Re-elected		 R17
Re-elected
Majority →
R17 R18 R19 R20 R21 R22 R23 R24 R25
Re-elected		 R26
Re-elected
R16 R15 R14 R13 R12 R11 R10 R9 R8 R7
V14 V13 V12 V11 R1 R2 R3 R4 R5 R6
V15 V16 V17 V18 V19 V20

United States Senate elections, 1868 and 1869

D3 D2 D1 V4
Seceded		 V3
Seceded		 V2
Seceded		 V1
D4 D5
Hold		 D6
Hold		 D7
Gain		 D8
Gain		 D9
Gain		 R57
Gain		 R56
Gain		 R55
Gain		 R54
Hold
R44
Re-elected		 R45
Re-elected		 R46
Re-elected		 R47
Re-elected		 R48
Hold		 R49
Hold		 R50
Hold		 R51
Hold		 R52
Hold		 R53
Hold
R43
Re-elected		 R42
Re-elected		 R41
Re-elected		 R40 R39 R38 R37 R36 R35 R34
Majority →
R24 R25 R26 R27 R28 R29 R30 R31 R32 R33
R23 R22 R21 R20 R19 R18 R17 R16 R15 R14
R4 R5 R6 R7 R8 R9 R10 R11 R12 R13
R3 R2 R1 V5 V6 V7 V8

United States Senate elections, 1870 and 1871

D7 D6 D5 D4 D3 D2 D1
D8
Hold		 D9
Hold		 D10
Hold		 D11
Gain		 D12
Gain		 D13
Gain		 D14
Gain		 V1
D Loss		 V2
R Loss		 R58
Hold
R48
Re-elected		 R49
Hold		 R50
Hold		 R51
Hold		 R52
Hold		 R53
Hold		 R54
Hold		 R55
Hold		 R56
Hold		 R57
Hold
R47
Re-elected		 R46
Re-elected		 R45
Re-elected		 R44
Re-elected		 R43
Re-elected		 R42 R41 R40 R39 R38
Majority → R37
R28 R29 R30 R31 R32 R33 R34 R35 R36
R27 R26 R25 R24 R23 R22 R21 R20 R19 R18
R8 R9 R10 R11 R12 R13 R14 R15 R16 R17
R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1872 and 1873

D7 D6 D5 D4 D3 D2 D1
D8 D9 D10 D11 D12 D13 D14 D15
Hold		 D16
Hold		 D17
Hold
R48
Hold		 R49
Hold		 R50
Hold		 R51
Hold		 R52
Hold		 R53
Hold		 R54
Gain		 V1
R Loss		 D19
Gain		 D18
Gain
R47
Hold		 R46
Hold		 R45
Hold		 R44
Re-elected		 R43
Re-elected		 R42
Re-elected		 R41
Re-elected		 R40
Re-elected		 R39
Re-elected		 R38
Re-elected
Majority → R37
Re-elected
R28 R29 R30 R31 R32 R33 R34 R35 R36
R27 R26 R25 R24 R23 R22 R21 R20 R19 R18
R8 R9 R10 R11 R12 R13 R14 R15 R16 R17
R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1874 and 1875

D7 D6 D5 D4 D3 D2 D1
D8 D9 D10 D11 D12 D13 D14 D15
Re-elected		 D16
Re-elected		 D17
Hold
D27
Gain		 D26
Gain		 D25
Gain		 D24
Gain		 D23
Gain		 D22
Gain		 D21
Gain		 D20
Gain		 D19
Gain		 D18
Hold
D28
Gain		 AM1
Gain		 V1 LR2 LR1 R42
Hold		 R41
Hold		 R40
Hold		 R39
Hold		 R38
Hold
Majority → R37
Hold
R28 R29 R30 R31 R32 R33
Re-elected		 R34
Re-elected		 R35
Hold		 R36
Hold
R27 R26 R25 R24 R23 R22 R21 R20 R19 R18
R8 R9 R10 R11 R12 R13 R14 R15 R16 R17
R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1876 and 1877

D8 D7 D6 D5 D4 D3 D2 D1
D9 D10 D11 D12 D13 D14 D15 D16 D17 D18
D28
Hold		 D27
Hold		 D26
Hold		 D25
Re-elected		 D24
Re-elected		 D23
Re-elected		 D22
Re-elected		 D21 D20 D19
D29
Hold		 D30
Hold		 D31
Gain		 D32
Gain		 D33
Gain		 D34
Gain		 D35
Gain		 I1
Gain		 AM1 R39
Hold
Majority →
R29
Re-elected		 R30
Re-elected		 R31
Re-elected		 R32
Re-elected		 R33
Re-elected		 R34
Hold		 R35
Hold		 R36
Hold		 R37
Hold		 R38
Hold
R28 R27 R26 R25 R24 R23 R22 R21 R20 R19
R9 R10 R11 R12 R13 R14 R15 R16 R17 R18
R8 R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1878 and 1879

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

United States Senate elections, 1880 and 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
Re-elected		 D30
Re-elected		 D31
Re-elected		 D33
Re-elected		 D33
Hold		 D34
Hold		 D35
Hold		 D36
Gain		 D37
Gain		 I1
Plurality ↓ RA1
Gain
R29
Hold		 R30
Hold		 R31
Gain		 R32
Gain		 R33
Gain		 R34
Gain		 R35
Gain		 R36
Gain		 R37
Gain
R28
Hold		 R27
Hold		 R26
Re-elected		 R25
Re-elected		 R24
Re-elected		 R23
Re-elected		 R22 R21 R20 R19
R9 R10 R11 R12 R13 R14 R15 R16 R17 R18
R8 R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1882 and 1883

D8 D7 D6 D5 D4 D3 D2 D1
D9 D10 D11 D12 D13 D14 D15 D16 D17 D18
D28
Re-elected		 D27
Re-elected		 D26
Re-elected		 D25
Re-elected		 D24
Re-elected		 D23 D22 D21 D20 D19
D29
Re-elected		 D30
Re-elected		 D31
Re-elected		 D32
Re-elected		 D33
Re-elected		 D34
Hold		 D35
Hold		 D36
Gain		 V1
R Loss		 RA2
Gain
Majority, with Readjusters in caucus ↓ RA1
R29
Re-elected		 R30
Re-elected		 R31
Hold		 R32
Hold		 R33
Hold		 R34
Hold		 R35
Hold		 R36
Gain		 R37
Gain
R28
Re-elected		 R27
Re-elected		 R26 R25 R24 R23 R22 R21 R20 R19
R9 R10 R11 R12 R13 R14 R15 R16 R17 R18
R8 R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1884 and 1885

D8 D7 D6 D5 D4 D3 D2 D1
D9 D10 D11 D12 D13 D14 D15 D16 D17 D18
D28
Re-elected		 D27
Re-elected		 D26
Re-elected		 D25
Re-elected		 D24
Re-elected		 D23
Re-elected		 D22 D21 D20 D19
D29
Re-elected		 D30
Hold		 D31
Hold		 D32
Hold		 D33
Hold		 D34
Hold		 V1
D Loss		 V2
R Loss		 V3
R Loss		 RA1
Majority due to three vacancies ↓ RA2
R29
Re-elected		 R30
Re-elected		 R31
Re-elected		 R32
Re-elected		 R33
Re-elected		 R34
Hold		 R35
Hold		 R36
Hold		 R37
Gain
R28
Re-elected		 R27 R26 R25 R24 R23 R22 R21 R20 R19
R9 R10 R11 R12 R13 R14 R15 R16 R17 R18
R8 R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1886 and 1887

D8 D7 D6 D5 D4 D3 D2 D1
D9 D10 D11 D12 D13 D14 D15 D16 D17 D18
D28
Re-elected		 D27
Re-elected		 D26
Re-elected		 D25 D24 D23 D22 D21 D20 D19
D29
Re-elected		 D30
Hold		 D31
Hold		 D32
Hold		 D33
Gain from RA		 D34
Gain from R		 D35
Gain from R		 D36
Gain from R		 V1
D Loss		 RA2
Majority due to vacancy→ R38
Gain from D
R29
Re-elected		 R30
Re-elected		 R31
Re-elected		 R32
Re-elected		 R33
Hold		 R34
Hold		 R35
Hold		 R36
Hold		 R37
Hold
R28
Re-elected		 R27
Re-elected		 R26
Re-elected		 R25 R24 R23 R22 R21 R20 R19
R9 R10 R11 R12 R13 R14 R15 R16 R17 R18
R8 R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1888 and 1889

D8 D7 D6 D5 D4 D3 D2 D1
D9 D10 D11 D12 D13 D14 D15 D16 D17 D18
D28
Re-elected		 D27
Re-elected		 D26
Re-elected		 D25
Re-elected		 D24 D23 D22 D21 D20 D19
D29
Re-elected		 D30
Re-elected		 D31
Re-elected		 D32
Re-elected		 D33
Re-elected		 D34
Re-elected		 D35
Re-elected		 D36
Re-elected		 D37
Gain		 V1
R Loss
Majority due to vacancy → R38
Gain
R29
Re-elected		 R30
Re-elected		 R31
Re-elected		 R32
Re-elected		 R33
Re-elected		 R39
Re-elected		 R35
Hold		 R36
Hold		 R37
Hold
R28
Re-elected		 R27
Re-elected		 R26 R25 R24 R23 R22 R21 R20 R19
R9 R10 R11 R12 R13 R14 R15 R16 R17 R18
R8 R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1890 and 1891

D1 D2
D12 D11 D10 D9 D8 D7 D6 D5 D4 D3
D13 D14 D15 D16 D17 D18 D19 D20 D21 D22
D32
Re-elected		 D31
Re-elected		 D30
Re-elected		 D29
Re-elected		 D28
Re-elected		 D27
Re-elected		 D26
Re-elected		 D25 D24 D23
D33
Re-elected		 D34
Hold		 D35
Hold		 D36
Hold		 D37
Hold		 D38
Gain		 D39
Gain		 D40
Gain		 I1
Gain		 P1
Gain
Majority → R43
New seat
R33
Re-elected		 R34
Re-elected		 R35
Re-elected		 R36
Re-elected		 R37
Re-elected		 R38
Re-elected		 R39
Re-elected		 R40
Re-elected		 R41
Hold		 R42
Hold
R32
Re-elected		 R31 R30 R29 R28 R27 R26 R25 R24 R23
R13 R14 R15 R16 R17 R18 R19 R20 R21 R22
R12 R11 R10 R9 R8 R7 R6 R5 R4 R3
R1 R2

United States Senate elections, 1892 and 1893

D1 D2 D3 D4
D14 D13 D12 D11 D10 D9 D8 D7 D6 D5
D15 D16 D17 D18 D19 D20 D21 D22 D23 D24
D34
Ran		 D33
Ran		 D32
Ran		 D31
Ran		 D30
Ran		 D29 D28 D27 D26 D25
D35
Ran		 D36
Ran		 D37
Ran		 D38
Unknown		 D39
Unknown		 D30
Retired		 D41
Gain		 D42
Gain		 V1
D loss		 V2
R loss
Majority with vacancies → D43
Gain		 V3
R loss
R35
Ran		 R36
Ran		 R37
Ran		 SR1
Gain		 P1 P2 P3
Gain		 V4
R loss
R34
Ran		 R33
Ran		 R32
Ran		 R31
Ran		 R30
Ran		 R29
Ran		 R28 R27 R26 R25
R15 R16 R17 R18 R19 R20 R21 R22 R23 R24
R14 R13 R12 R11 R10 R9 R8 R7 R6 R5
R1 R2 R3 R4

United States Senate elections, 1894 and 1895

D1 D2 D3 D4
D14 D13 D12 D11 D10 D9 D8 D7 D6 D5
D15 D16 D17 D18 D19 D20 D21 D22 D23 D24
D34
Re-elected		 D33
Re-elected		 D32
Re-elected		 D31
Re-elected		 D30 D29 D28 D27 D26 D25
D35
Hold		 D36
Hold		 D37
Hold		 D38
Hold		 D39
Hold		 D40
Retired		 P4
Gain		 P3 V4
R Loss		 V1
No majority V2
R35
Hold		 R36
Hold		 R37
Gain		 R38
Gain		 R39
Gain		 SR1 P1 P2 V3
R34
Hold		 R33
Hold		 R32
Hold		 R31
Hold		 R30
Hold		 R29
Re-elected		 R28
Re-elected		 R27
Re-elected		 R26
Re-elected		 R25
Re-elected
R15 R16 R17 R18 R19 R20 R21 R22
Re-elected		 R23
Re-elected		 R24
Re-elected
R14 R13 R12 R11 R10 R9 R8 R7 R6 R5
R1 R2 R3 R4

United States Senate elections, 1896 and 1897

D1 D2 D3 D4 D5
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6
D16 D17 D18 D19 D20 D21 D22 D23 D24 D25
P3
Re-elected		 P4
Hold		 P5
Gain
from R		 D32
Gain
from R		 D31
Hold		 D30
Hold		 D29
Hold		 D28
Hold		 D27
Re-elected		 D26
Re-elected
P2 P1 S2
Re-elected		 S1 SR2
Re-elected
was R		 SR1
Gain
from R		 R46
Gain
from D		 R45
Gain
from D		 R44
Gain
from D		 V1
D Loss
Majority → V2
R36
Re-elected		 R37
Re-elected		 R38
Re-elected		 R39
Hold		 R40
Gain
from D		 R41
Gain
from D		 R42
Gain
from D		 R43
Gain
from D		 V3
R Loss
R35
Re-elected		 R34
Re-elected		 R33
Re-elected		 R32
Re-elected		 R31 R30 R29 R28 R27 R26
R16 R17 R18 R19 R20 R21 R22 R23 R24 R25
R15 R14 R13 R12 R11 R10 R9 R8 R7 R6
R1 R2 R3 R4 R5

United States Senate elections, 1898 and 1899

D1 D2 D3 D4 D5
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6
D16 D17 D18 D19 D20
Re-elected		 D21
Re-elected		 D22
Re-elected		 D23
Re-elected		 D24
Hold		 D25
Gain
from SR
R50
Gain
from D		 SR3
Re-elected		 SR2 SR1 S1 S2 P1 P2 P3 P4
R49
Gain
from D		 R48
Gain
from D		 R47
Gain
from D		 R46
Gain
from D		 R45
Gain
from D		 R44
Gain
from D		 R43
Hold		 V1
D Loss		 V2
D Loss		 V3
D Loss
Majority →
R42
Re-elected		 V6
R Loss		 V5
SR Loss		 V4
P Loss
R36
Re-elected		 R37
Re-elected		 R38
Re-elected		 R39
Re-elected		 R40
Re-elected		 R41
Re-elected
R35
Re-elected		 R34
Re-elected		 R33 R32 R31 R30 R29 R28 R27 R26
R16 R17 R18 R19 R20 R21 R22 R23 R24 R25
R15 R14 R13 R12 R11 R10 R9 R8 R7 R6
R1 R2 R3 R4 R5

United States Senate elections, 1900 and 1901

D1 D2 D3 D4 D5
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6
D16
Re-elected		 D17
Re-elected		 D18
Re-elected		 D19
Re-elected		 D20
Re-elected		 D21
Hold		 D22
Hold		 D23
Hold		 D24
Hold		 D25
Hold
SR1 S1 S2 P1 P2 P3 P4 D28
Gain from P		 D27
Gain from R		 D26
Gain from R
SR2 SR3
Gain from R		 R48
Gain from SR		 R47
Re-elected		 R46
Re-elected		 R45
Re-elected		 R44
Hold		 R43
Re-elected		 V5
D Loss		 V1
Majority → V4
R Loss		 V2
R36
Re-elected		 R37
Re-elected		 R38
Re-elected		 R39
Re-elected		 R40
Re-elected		 R41
Re-elected		 R42
Hold		 V3
R35
Re-elected		 R34 R33 R32 R31 R30 R29 R28 R27 R26
R16 R17 R18 R19 R20 R21 R22 R23 R24 R25
R15 R14 R13 R12 R11 R10 R9 R8 R7 R6
R1 R2 R3 R4 R5

United States Senate elections, 1902

[Data unknown/missing. You can help!]

United States Senate elections, 1904

[Data unknown/missing. You can help!]

United States Senate elections, 1906

[Data unknown/missing. You can help!]

United States Senate elections, 1908

[Data unknown/missing. You can help!]

United States Senate elections, 1910

[Data unknown/missing. You can help!]

United States Senate elections, 1912 and 1913

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 O* D37 √ D36 √ D35 √ D34 √ D33 √ D32 √ D31 D30 D29
D39 O D40 O D41 O D42 O D43 + D44 + (D45 +)* D46 + D47 + (D48 +)*
Majority →
R38 √ R39 O R40 O R41 O R42 O (R43 +)* R44 + D51 + D50 + D49 +
R37 √ R36 √ R35 √ R34 √ R33 √ R32 R31 R30 R29 R28
R18 + (R19)* R20 R21 R22 R23 R24 R25 R26 R27
R17 R16 R15 R14 R13 R12 R11 R10 R9 R8
P1 R1 R2 R3 R4 R5 R6 R7

United States Senate elections, 1914

[Data unknown/missing. You can help!]

United States Senate elections, 1916 and 1917

  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
Re-elected		 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39
Re-elected		 D40
Re-elected		 D41
Re-elected		 D42
Re-elected		 D43
Re-elected		 D44
Re-elected		 D45
Re-elected		 D46
Re-elected		 D47
Hold		 D48
Hold
Majority → D49
Gain
R39
Gain		 R40
Gain		 R41 R42 D54 D53
Gain		 D52
Gain		 D51
Gain		 D50
Gain
R38
Gain		 R37
Gain		 R36
Gain		 R35
Gain		 R34
Hold		 R33
Hold		 R32
Hold		 R31
Re-elected		 R30
Re-elected		 R29
Re-elected
R19 R20 R21 R22 R23 R24 R25
Re-elected		 R26
Re-elected		 R27
Re-elected		 R28
Re-elected
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
R1 R2 R3 R4 R5 R6 R7 R8

United States Senate elections, 1918

[Data unknown/missing. You can help!]

United States Senate elections, 1920

[Data unknown/missing. You can help!]

United States Senate elections, 1922

[Data unknown/missing. You can help!]

United States Senate elections, 1924

[Data unknown/missing. You can help!]

United States Senate elections, 1926

[Data unknown/missing. You can help!]

United States Senate elections, 1928

[Data unknown/missing. You can help!]

United States Senate elections, 1930

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 O D37 O D36 O D35 O D34 O D33 √ D32 √ D31 √ D30 √ D29 √
D39 + D40 + D41 + D42 + D43 + D44 + D45 + D46 + D47 + FL1
Majority (with Vice President's vote)→ R48 +
R39 √ R40 √ R41 √ R42 √ R43 √ R44 O R45 O R46 O R47 O
R38 √ R37 √ R36 √ R35 √ 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

United States Senate elections, 1932

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 √ D37 √ D36 √ D35 √ D34 √ D33 √ D32 √ D31 D30 D29
D39 √ D40 √ D41 √ D42 √ D43 √ D44 O D45 O D46 O D47 O D48 O
Majority → D49 +
D50 + D51 + D52 + D53 + D54 + D55 + D56 + D57 + D58 +
D59 + FL1 R36 √ R35 √ 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

United States Senate elections, 1934

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 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39 D40 D41 D42 D43 D44 √ D45 √ D46 √ D47 √ D48 √
Majority → D49 √
D58 O D57 O D56 √ D55 √ D54 √ D53 √ D52 √ D51 √ D50 √
D59 O D60 O D61 + D62 + D63 + D64 + D65 + D66 + D67 + D68 +
R19 √ R20 √ R21 √ R22 √ R23 √ R24 √ R25 √ P1 + FL1 √ D69 +
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
R1 R2 R3 R4 R5 R6 R7 R8

United States Senate elections, 1936

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 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39 D40 D41 D42 D43 D44 D45 D46 D47 D48 √
Majority → D49 √
D58 √ D57 √ D56 √ D55 √ D54 √ D53 √ D52 √ D51 √ D50 √
D59 √ D60 √ D61 √ D62 √ D63 √ D64 O D65 O D66 O D67 O D68 O
FL2 O I1 @ V1 + D75 + D74 + D73 + D72 + D71 + D70 + D69 +
R16 O R15 √ R14 √ R13 √ R12 √ R11 √ R10 R9 R8 R7
FL1 P1 R1 R2 R3 R4 R5 R6

United States Senate elections, 1938

  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 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39 D40 D41 D42 D43 D44 D45 D46 D47 D48
Majority → D49
Re-elected
D58
Re-elected		 D57
Hold		 D56
Re-elected		 D55
Re-elected		 D54
Re-elected		 D53
Re-elected		 D52
Hold		 D51
Re-elected		 D50
Re-elected
D59
Re-elected		 D60
Re-elected		 D61
Re-elected		 D62
Re-elected		 D63
Re-elected		 D64
Re-elected		 D65
Re-elected		 D66
Re-elected		 D67
Re-elected		 D68
Hold
R19
Gain		 R20
Gain		 R21
Gain		 R22
Gain		 P1 FL1 FL2 I1 D70
Re-elected		 D69
Re-elected
R18
Gain		 R17
Gain		 R16
Gain		 R15
Re-elected		 R14
Re-elected		 R13
Re-elected		 R12 R11 R10 R9
R1 R2 R3 R4 R5 R6 R7 R8

United States Senate elections, 1940

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 D30 D31 D32 D33 D34 D35 D36 D37 D38
D48√ D47√ D46√ D45√ D44 D43 D42 D41 D40 D39
D49√ ← Majority
D50√ D51√ D52√ D53√ D54√ D55√ D56√ D57√ D58√
R27+ R28+ D66+ D65O D64O D63O D62O D61√ D60√ D59√
R26+ R25+ R24@ R23O R22O R21O R20√ R19√ R18√ R17√
R7 R8 R9 R10 R11 R12 R13 R14 R15 R16√
R6 R5 R4 R3 R2 R1 I1 P1

United States Senate elections, 1942

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 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39 D40 D41 D42 D43√ D44√ D45√ D46√ D47√ D48√
Majority →
D58O D57O D56O D55√ D54√ D53√ D52√ D51√ D50√ D49√
R37+ R36+ R35+ R34+ R33+ R32+ R31+ R30+ R29+ R28+
R18 R19 R20√ R21√ R22√ R23√ R24√ R25√ R26√ R27O
R17 R16 R15 R14 R13 R12 R11 R10 R9 R8
P1 R1 R2 R3 R4 R5 R6 R7

United States Senate elections, 1944

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 D30 D31 D32 D33 D34 D35 D36 D37√ D38√
D48√ D47√ D46√ D45√ D44√ D43√ D42√ D41√ D40√ D39√
D49√ ← Majority
D50O D51O D52O D53O D54O D55+ D56+ D57+ R38+
R28√ R29√ R30√ R31√ R32√ R33O R34O R35+ R36+ R37+
R27√ R26√ R25√ R24 R23 R22 R21 R20 R19 R18
R8 R9 R10 R11 R12 R13 R14 R15 R16 R17
R7 R6 R5 R4 R3 R2 R1 P1

United States Senate elections, 1946

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 D30 D31 D32 D33√ D34√ D35√ D36√ D37√ D38√
R49+ R50+ R51+ D45O D44O D43O D42O D41√ D40√ D39√
← Majority
R48+ R47+ R46+ R45+ R44+ R43+ R42+ R41+ R40+ R39O
R29√ R30√ R31√ R32√ R33√ R34√ R35O R36O R37O R38O
R28√ R27 R26 R25 R24 R23 R22 R21 R20 R19
R9 R10 R11 R12 R13 R14 R15 R16 R17 R18
R8 R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1948 and 1949

  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
Re-elected		 D37
Re-elected		 D36
Re-elected		 D35
Re-elected		 D34
Re-elected		 D33
Re-elected		 D32
Re-elected		 D31 D30 D29
D39
Re-elected		 D40
Re-elected		 D41
Re-elected		 D42
Hold		 D43
Hold		 D44
Hold		 D45
Hold		 D46
Gain		 D47
Gain		 D48
Gain
Majority → D49
Gain
R39
Hold		 R40
Hold		 R41
Hold		 R42
Hold		 D54
Gain		 D53
Gain		 D52
Gain		 D51
Gain		 D50
Gain
R38
Re-elected		 R37
Re-elected		 R36
Re-elected		 R35
Re-elected		 R34
Re-elected		 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

United States Senate elections, 1950

[Data unknown/missing. You can help!]

United States Senate elections, 1952

[Data unknown/missing. You can help!]

United States Senate elections, 1954

[Data unknown/missing. You can help!]

United States Senate elections, 1956 and 1957

  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
Re-elected		 D37
Re-elected		 D36
Re-elected		 D35
Re-elected		 D34 D33 D32 D31 D30 D29
D39
Re-elected		 D40
Re-elected		 D41
Re-elected		 D42
Re-elected		 D43
Re-elected		 D44
Re-elected		 D45
Re-elected		 D46
Re-elected		 D47
Hold		 D48
Gain
Majority → D49
Gain
R39
Re-elected		 R40
Re-elected		 R41
Re-elected		 R42
Re-elected		 R43
Re-elected		 R44
Gain		 R45
Gain		 D51
Gain		 D50
Gain
R38
Re-elected		 R37
Re-elected		 R36
Re-elected		 R35
Re-elected		 R34
Re-elected		 R33
Re-elected		 R32
Re-elected		 R31
Re-elected		 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

United States Senate elections, 1958 and 1959

  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
Re-elected		 D37 D36 D35 D34 D33 D32 D31 D30 D29
D39
Re-elected		 D40
Re-elected		 D41
Re-elected		 D42
Re-elected		 D43
Re-elected		 D44
Re-elected		 D45
Re-elected		 D46
Re-elected		 D47
Re-elected		 D48
Re-elected
Majority → D49
Re-elected
D58
Gain		 D57
Gain		 D56
Gain		 D55
Gain		 D54
Gain		 D53
Gain		 D52
Gain		 D51
Gain		 D50
Gain
D59
Gain		 D60
Gain		 D61
Gain		 R35
Hold		 R34
Hold		 R33
Hold		 R32
Re-elected		 R31
Re-elected		 R30
Re-elected		 R29
Re-elected
R19 R20 R21 R22 R23 R24 R25 R26 R27 R28
Re-elected
R18 R17 R16 R15 R14 R13 R12 R11 R10 R9
R1 R2 R3 R4 R5 R6 R7 R8

United States Senate elections, 1960

D10 D9 D8 D7 D6 D5 D4 D3 D2 D1
D11 D12 D13 D14 D15 D16 D17 D18 D19 D20
D30 D29 D28 D27 D26 D25 D24 D23 D22 D21
D31 D32 D33 D34 D35 D36 D37 D38 D39 D40
D50√ D49√ D48√ D47√ D46√ D45√ D44√ D43√ D42 D41
D51√ ← Majority
D52√ D53√ D54√ D55√ D56√ D57√ D58√ D59√ D60√
R31√ R32√ R33√ R34O R35+ R36+ D64+ D63O D62O D61O
R30√ R29√ R28√ R27√ R26√ R25√ R24√ R23 R22 R21
R11 R12 R13 R14 R15 R16 R17 R18 R19 R20
R10 R9 R8 R7 R6 R5 R4 R3 R2 R1

United States Senate elections, 1962

[Data unknown/missing. You can help!]

United States Senate elections, 1964

[Data unknown/missing. You can help!]

United States Senate elections, 1966

[Data unknown/missing. You can help!]

United States Senate elections, 1968

[Data unknown/missing. You can help!]

United States Senate elections, 1970

[Data unknown/missing. You can help!]

United States Senate elections, 1972

[Data unknown/missing. You can help!]

United States Senate elections, 1974

[Data unknown/missing. You can help!]

United States Senate elections, 1976

[Data unknown/missing. You can help!]

United States Senate elections, 1978

[Data unknown/missing. You can help!]

United States Senate elections, 1980

[Data unknown/missing. You can help!]

United States Senate elections, 1982

[Data unknown/missing. You can help!]

United States Senate elections, 1984

[Data unknown/missing. You can help!]

United States Senate elections, 1986

[Data unknown/missing. You can help!]

United States Senate elections, 1988

[Data unknown/missing. You can help!]

United States Senate elections, 1990

[Data unknown/missing. You can help!]

United States Senate elections, 1992

[Data unknown/missing. You can help!]

United States Senate elections, 1994

[Data unknown/missing. You can help!]

United States Senate elections, 1996

[Data unknown/missing. You can help!]

United States Senate elections, 1998

[Data unknown/missing. You can help!]

United States Senate elections, 2000

[Data unknown/missing. You can help!]

United States Senate elections, 2002

[Data unknown/missing. You can help!]

United States Senate elections, 2004

[Data unknown/missing. You can help!]

United States Senate elections, 2006

[Data unknown/missing. You can help!]

United States Senate elections, 2008

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected		 D39
Re-elected		 D38
Re-elected		 D37 D36 D35 D34 D33 D32 D31
D41
Re-elected		 D42
Re-elected		 D43
Re-elected		 D44
Re-elected		 D45
Re-elected		 D46
Re-elected		 D47
Re-elected		 D48
Re-elected		 D49
Re-elected		 D50
Gain
Majority → D51
Gain
R41
Hold		 I2 I1 D57
Gain		 D56
Gain		 D55
Gain		 D54
Gain		 D53
Gain		 D52
Gain
R40
Hold		 R39
Re-elected		 R38
Re-elected		 R37
Re-elected		 R36
Re-elected		 R35
Re-elected		 R34
Re-elected		 R33
Re-elected		 R32
Re-elected		 R31
Re-elected
R21 R22 R23 R24 R25 R26 R27
Re-elected		 R28
Re-elected		 R29
Re-elected		 R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

United States Senate elections, 2010

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected		 D39
Re-elected		 D38 D37 D36 D35 D34 D33 D32 D31
D41
Re-elected		 D42
Re-elected		 D43
Re-elected		 D44
Re-elected		 D45
Re-elected		 D46
Re-elected		 D47
Re-elected		 D48
Re-elected		 D49
Hold		 D50
Hold
Majority →
R41
Hold		 R42
Gain		 R43
Gain		 R44
Gain		 R45
Gain		 R46
Gain		 R47
Gain		 I2 I1 D51
Hold
R40
Hold		 R39
Hold		 R38
Hold		 R37
Hold		 R36
Hold		 R35
Hold		 R34
Re-elected		 R33
Re-elected		 R32
Re-elected		 R31
Re-elected
R21 R22 R23 R24
Re-elected		 R25
Re-elected		 R26
Re-elected		 R27
Re-elected		 R28
Re-elected		 R29
Re-elected		 R30
Re-elected
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

United States Senate elections, 2012 and 2013

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected		 D39
Re-elected		 D38
Re-elected		 D37
Re-elected		 D36
Re-elected		 D35
Re-elected		 D34
Re-elected		 D33
Re-elected		 D32
Re-elected		 D31
Re-elected
D41
Re-elected		 D42
Re-elected		 D43
Re-elected		 D44
Re-elected		 D45
Re-elected		 D46
Hold		 D47
Hold		 D48
Hold		 D49
Hold		 D50
Hold
Majority →
R41
Re-elected		 R42
Re-elected		 R43
Hold		 R44
Hold		 R45
Gain		 I2
Gain		 I1
Re-elected		 D53
Gain		 D52
Gain		 D51
Gain
R40
Re-elected		 R39
Re-elected		 R38
Re-elected		 R37 R36 R35 R34 R33 R32 R31
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

United States Senate elections, 2014

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected		 D39
Re-elected		 D38
Re-elected		 D37
Re-elected		 D36
Re-elected		 D35
Re-elected		 D34
Re-elected		 D33
Re-elected		 D32 D31
D41
Re-elected		 D42
Re-elected		 D43
Re-elected		 D44
Hold		 I1 I2 R54
Gain		 R53
Gain		 R52
Gain		 R51
Gain
Majority →
R41
Re-elected		 R42
Re-elected		 R43
Hold		 R44
Hold		 R45
Hold		 R46
Gain		 R47
Gain		 R48
Gain		 R49
Gain		 R50
Gain
R40
Re-elected		 R39
Re-elected		 R38
Re-elected		 R37
Re-elected		 R36
Re-elected		 R35
Re-elected		 R34
Re-elected		 R33
Re-elected		 R32
Re-elected		 R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

United States Senate elections, 2016

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
D20 D19 D18 D17 D16 D15 D14 D13 D12 D11
D21 D22 D23 D24 D25 D26 D27 D28 D29 D30
D40
Re-elected		 D39
Re-elected		 D38
Re-elected		 D37
Re-elected		 D36
Re-elected		 D35
Re-elected		 D34 D33 D32 D31
D41
Re-elected		 D42
Hold		 D43
Hold		 D44
Hold		 D45
Gain		 D46
Gain		 I1 I2 TBD R51
Hold
Majority →
R50
Re-elected
R41
Re-elected		 R42
Re-elected		 R43
Re-elected		 R44
Re-elected		 R45
Re-elected		 R46
Re-elected		 R47
Re-elected		 R48
Re-elected		 R49
Re-elected
R40
Re-elected		 R39
Re-elected		 R38
Re-elected		 R37
Re-elected		 R36
Re-elected		 R35
Re-elected		 R34
Re-elected		 R33
Re-elected		 R32
Re-elected		 R31
Re-elected
R21 R22 R23 R24 R25 R26 R27 R28 R29 R30
R20 R19 R18 R17 R16 R15 R14 R13 R12 R11
R1 R2 R3 R4 R5 R6 R7 R8 R9 R10

See also

References

  1. 1 2 3 Martis, Kenneth C. The Historical Atlas of Political Parties in the United States Congress.
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