Polical Composition of the United States Senate and House of Representatives: 1855 (34th Congress) - present

(All Figures Reflect Immediate Results of Elections)
Congress	Years	Number of Senators	Demo- crats	Repub- licans	Other	Vacant	Number of Represen-tatives	Demo- crats	Repub- licans	Other	Vacant
34th	1855-1857	62	42	15	5		234	83	108	43
35th	1857-1859	64	39	20	5		237	131	92	14
36th	1859-1861	66	38	26	2		237	101	113	23
37th	1861-1863	50	11	31	7	1	178	42	106	28	2
38th	1863-1865	51	12	39			183	80	103
39th	1865-1867	52	10	42			191	46	145
40th	1867-1869	53	11	42			193	49	143		1
41st	1869-1871	74	11	61		2	243	73	170
42nd	1871-1873	74	17	57			243	104	139
43rd	1873-1875	74	19	54		1	293	88	203		2
44th	1875-1877	76	29	46		1	293	181	107	3	2
45th	1877-1879	76	36	39	1		293	156	137
46th	1879-1881	76	43	33			293	150	128	14	1
47th	1881-1883	76	37	37	2		293	130	152	11
48th	1883-1885	76	36	40			325	200	119	6
49th	1885-1887	76	34	41		1	325	182	140	2	1
50th	1887-1889	76	37	39			325	170	151	4
51st	1889-1891	84	37	47			330	156	173	1
52nd	1891-1893	88	39	47	2		333	231	88	14
53rd	1893-1895	88	44	38	3	3	356	220	126	10
54th	1895-1897	88	39	44	5		357	104	246	7
55th	1897-1899	90	34	46	10		357	134	206	16	1
56th	1899-1901	90	26	53	11		357	163	185	9
57th	1901-1903	90	29	56	3	2	357	153	198	5	1
58th	1903-1905	90	32	58			386	178	207		1
59th	1905-1907	90	32	58			386	136	250
60th	1907-1909	92	29	61		2	386	164	222
61st	1909-1911	92	32	59		1	391	172	219
62nd	1911-1913	92	42	49		1	391	228	162	1
63rd	1913-1915	96	51	44	1		435	290	127	18
64th	1915-1917	96	56	39	1		435	231	193	8	3
65th	1917-1919	96	53	42	1		435	210	216	9
66th	1919-1921	96	47	48	1		435	191	237	7
67th	1921-1923	96	37	59			435	132	300	1	2
68th	1923-1925	96	43	51	2		435	207	225	3
69th	1925-1927	96	40	54	1	1	435	183	247	5
70th	1927-1929	96	47	48	1		435	195	237	3
71st	1929-1931	96	39	56	1		435	163	267	1	4
72nd	1931-1933	96	47	48	1		435	216	218	1
73rd	1933-1935	96	59	36	1		435	313	117	5
74th	1935-1937	96	69	25	2		435	322	103	10
75th	1937-1939	96	75	17	4		435	333	89	13
76th	1939-1941	96	69	23	4		435	262	169	4
77th	1941-1943	96	66	28	2		435	267	162	6
78th	1943-1945	96	57	38	1		435	222	209	4
79th	1945-1947	96	57	38	1		435	243	190	2
80th	1947-1949	96	45	51			435	188	246	1
81st	1949-1951	96	54	42			435	263	171	1
82nd	1951-1953	96	48	47	1		435	234	199	2
83rd	1953-1955	96	46	48	2		435	213	221	1
84th	1955-1957	96	48	47	1		435	232	203
85th	1957-1959	96	49	47			435	234	201
86th	1959-1961	98	64	34			3436	283	153
87th	1961-1963	100	64	36			4437	262	175
88th	1963-1965	100	67	33			435	258	176		1
89th	1965-1967	100	68	32			435	295	140
90th	1967-1969	100	64	36			435	248	187
91st	1969-1971	100	58	42			435	243	192
92nd	1971-1973	100	54	44	2		435	255	180
93rd	1973-1975	100	56	42	2		435	242	192	1
94th	1975-1977	100	61	37	2		435	291	144
95th	1977-1979	100	61	38	1		435	292	143
96th	1979-1981	100	58	41	1		435	277	158
97th	1981-1983	100	46	53	1		435	242	192	1
98th	1983-1985	100	46	54			435	269	166
99th	1985-1987	100	47	53			435	253	182
100th	1987-1989	100	55	45			435	258	177
101st	1989-1991	100	55	45			435	260	175
102nd	1991-1993	100	56	44			440	272	168		1
103rd	1993-1995	100	56	44			435	258	176	1
104th	1995-1997	100	46	54			440	202	235	2	1
105th	1997-1999	100	45	55			435	206	228	1
106th	1999-2001	100	45	55			435	211	222	2
107th	2001-2003	100	50	49	1		435	210	219	2	4
108th	2003-2005	100	48	51	1		435	205	229	1
109th	2005-2007	100	44	55	1		435	202	231	1	1

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Polical Composition of the United States Senate and House of Representatives: 1855 (34th Congress) - present