Welcome, visitor! Log in
 

How many Republicans and Democrats serve in state legislatures?

The partisan balance in the state legislatures tends to follow national partisan trends. Here are some data from February 2011.

ENPP is "effective number of political parties," measured using Laakso and Taagepera's (1979) formula If a legislature is evenly divided between Republicans and Democrats, ENPP is 2. As the balance shifts toward one party, ENPP moves toward 1. For purposes of calculating this number, I treat "other" as if it were a single party, which will tend to depress the estimate slightly (especially in Nebraska).

Click a column name to sort by that variable. Click a state or chamber name to see a list of legislators from that state/chamber.

State Chamber Size Democrats Republicans Other ENPP Graph
National average Lower 5391 2457 (46%) 2896 (54%) 38 (1%) 2.01
Upper 1961 879 (45%) 1026 (52%) 56 (3%) 2.10
AlabamaLower 104 39 (38%) 65 (63%) 0 (0%) 1.88
Upper 35 12 (34%) 22 (63%) 1 (3%) 1.95
AlaskaLower 40 16 (40%) 24 (60%) 0 (0%) 1.92
Upper 20 10 (50%) 10 (50%) 0 (0%) 2.00
ArizonaLower 60 20 (33%) 40 (67%) 0 (0%) 1.80
Upper 30 9 (30%) 21 (70%) 0 (0%) 1.72
ArkansasLower 98 54 (55%) 44 (45%) 0 (0%) 1.98
Upper 35 20 (57%) 15 (43%) 0 (0%) 1.96
CaliforniaLower 79 52 (66%) 27 (34%) 0 (0%) 1.82
Upper 40 25 (63%) 15 (38%) 0 (0%) 1.88
ColoradoLower 65 32 (49%) 33 (51%) 0 (0%) 2.00
Upper 35 20 (57%) 15 (43%) 0 (0%) 1.96
ConnecticutLower 145 95 (66%) 50 (34%) 0 (0%) 1.82
Upper 33 20 (61%) 13 (39%) 0 (0%) 1.91
DelawareLower 41 26 (63%) 15 (37%) 0 (0%) 1.87
Upper 21 14 (67%) 7 (33%) 0 (0%) 1.80
FloridaLower 120 39 (33%) 81 (68%) 0 (0%) 1.78
Upper 39 11 (28%) 28 (72%) 0 (0%) 1.68
GeorgiaLower 179 63 (35%) 115 (64%) 1 (1%) 1.86
Upper 56 20 (36%) 36 (64%) 0 (0%) 1.85
HawaiiLower 51 43 (84%) 8 (16%) 0 (0%) 1.36
Upper 25 24 (96%) 1 (4%) 0 (0%) 1.08
State Chamber Size Democrats Republicans Other ENPP Graph
IdahoLower 70 13 (19%) 57 (81%) 0 (0%) 1.43
Upper 35 7 (20%) 28 (80%) 0 (0%) 1.47
IllinoisLower 118 64 (54%) 54 (46%) 0 (0%) 1.99
Upper 58 34 (59%) 24 (41%) 0 (0%) 1.94
IndianaLower 100 40 (40%) 60 (60%) 0 (0%) 1.92
Upper 50 13 (26%) 37 (74%) 0 (0%) 1.63
IowaLower 100 39 (39%) 60 (60%) 1 (1%) 1.95
Upper 50 26 (52%) 23 (46%) 1 (2%) 2.07
KansasLower 125 33 (26%) 92 (74%) 0 (0%) 1.64
Upper 40 8 (20%) 32 (80%) 0 (0%) 1.47
KentuckyLower 100 58 (58%) 42 (42%) 0 (0%) 1.95
Upper 38 15 (39%) 22 (58%) 1 (3%) 2.03
LouisianaLower 104 48 (46%) 52 (50%) 4 (4%) 2.15
Upper 38 19 (50%) 19 (50%) 0 (0%) 2.00
MaineLower 152 72 (47%) 77 (51%) 3 (2%) 2.08
Upper 35 14 (40%) 20 (57%) 1 (3%) 2.05
MarylandLower 141 98 (70%) 43 (30%) 0 (0%) 1.74
Upper 47 35 (74%) 12 (26%) 0 (0%) 1.61
MassachusettsLower 159 128 (81%) 31 (19%) 0 (0%) 1.46
Upper 40 36 (90%) 4 (10%) 0 (0%) 1.22
MichiganLower 110 47 (43%) 63 (57%) 0 (0%) 1.96
Upper 38 12 (32%) 26 (68%) 0 (0%) 1.76
State Chamber Size Democrats Republicans Other ENPP Graph
MinnesotaLower 133 61 (46%) 72 (54%) 0 (0%) 1.99
Upper 67 30 (45%) 37 (55%) 0 (0%) 1.98
MississippiLower 122 72 (59%) 50 (41%) 0 (0%) 1.94
Upper 51 25 (49%) 26 (51%) 0 (0%) 2.00
MissouriLower 163 57 (35%) 106 (65%) 0 (0%) 1.83
Upper 33 7 (21%) 26 (79%) 0 (0%) 1.50
MontanaLower 100 32 (32%) 68 (68%) 0 (0%) 1.77
Upper 50 22 (44%) 28 (56%) 0 (0%) 1.97
NebraskaUpper 49 0 (0%) 0 (0%) 49 (100%) 1.00
Nebraska has a nonpartisan unicameral legislature.
NevadaLower 42 26 (62%) 16 (38%) 0 (0%) 1.89
Upper 21 11 (52%) 10 (48%) 0 (0%) 2.00
New HampshireLower 399 100 (25%) 296 (74%) 3 (1%) 1.63
Upper 24 5 (21%) 19 (79%) 0 (0%) 1.49
New JerseyLower 80 47 (59%) 33 (41%) 0 (0%) 1.94
Upper 40 24 (60%) 16 (40%) 0 (0%) 1.92
New MexicoLower 70 37 (53%) 33 (47%) 0 (0%) 1.99
Upper 42 27 (64%) 15 (36%) 0 (0%) 1.85
New YorkLower 149 98 (66%) 45 (30%) 6 (4%) 1.90
Upper 62 30 (48%) 32 (52%) 0 (0%) 2.00
North CarolinaLower 120 52 (43%) 67 (56%) 1 (1%) 2.00
Upper 50 19 (38%) 31 (62%) 0 (0%) 1.89
North DakotaLower 94 25 (27%) 69 (73%) 0 (0%) 1.64
Upper 47 12 (26%) 35 (74%) 0 (0%) 1.61
State Chamber Size Democrats Republicans Other ENPP Graph
OhioLower 99 40 (40%) 59 (60%) 0 (0%) 1.93
Upper 33 10 (30%) 23 (70%) 0 (0%) 1.73
OklahomaLower 101 31 (31%) 70 (69%) 0 (0%) 1.74
Upper 48 16 (33%) 30 (63%) 2 (4%) 1.99
OregonLower 60 30 (50%) 30 (50%) 0 (0%) 2.00
Upper 30 16 (53%) 14 (47%) 0 (0%) 1.99
PennsylvaniaLower 203 91 (45%) 112 (55%) 0 (0%) 1.98
Upper 49 19 (39%) 30 (61%) 0 (0%) 1.90
Rhode IslandLower 75 65 (87%) 10 (13%) 0 (0%) 1.30
Upper 38 29 (76%) 8 (21%) 1 (3%) 1.59
South CarolinaLower 123 47 (38%) 76 (62%) 0 (0%) 1.89
Upper 45 19 (42%) 26 (58%) 0 (0%) 1.95
South DakotaLower 70 19 (27%) 50 (71%) 1 (1%) 1.71
Upper 35 5 (14%) 30 (86%) 0 (0%) 1.32
TennesseeLower 99 34 (34%) 65 (66%) 0 (0%) 1.82
Upper 33 13 (39%) 20 (61%) 0 (0%) 1.91
TexasLower 150 49 (33%) 101 (67%) 0 (0%) 1.79
Upper 31 12 (39%) 19 (61%) 0 (0%) 1.90
UtahLower 75 17 (23%) 58 (77%) 0 (0%) 1.54
Upper 29 7 (24%) 22 (76%) 0 (0%) 1.58
VermontLower 150 99 (66%) 35 (23%) 16 (11%) 1.99
Upper 30 22 (73%) 8 (27%) 0 (0%) 1.64
State Chamber Size Democrats Republicans Other ENPP Graph
VirginiaLower 99 39 (39%) 58 (59%) 2 (2%) 2.00
Upper 40 22 (55%) 18 (45%) 0 (0%) 1.98
WashingtonLower 98 56 (57%) 42 (43%) 0 (0%) 1.96
Upper 49 27 (55%) 22 (45%) 0 (0%) 1.98
West VirginiaLower 100 65 (65%) 35 (35%) 0 (0%) 1.83
Upper 34 28 (82%) 6 (18%) 0 (0%) 1.41
WisconsinLower 96 39 (41%) 57 (59%) 0 (0%) 1.93
Upper 33 14 (42%) 19 (58%) 0 (0%) 1.96
WyomingLower 60 10 (17%) 50 (83%) 0 (0%) 1.38
Upper 30 4 (13%) 26 (87%) 0 (0%) 1.30