Political Divisions of Congress

Figures reflect party divisions immediately following elections.

Congress	Period	House					Senate
Congress	Period	Federalist	Dem-Rep¹	Other	Vacant	Total	Federalist	Dem-Rep¹	Other	Vacant	Total
1st	1789-91	38	26²			64	17	9²			26
2nd	1791-93	37	33			70	16	13			29
3rd	1793-95	48	57			105	17	13			30
4th	1795-97	54	52			106	19	13			32
5th	1797-99	58	48			106	20	12			32
6th	1799-01	64	42			106	19	13			32
7th	1801-03	36	69			105	14	18			32
8th	1803-05	39	102			141	9	25			34
9th	1805-07	25	116			141	7	27			34
10th	1807-09	24	118			142	6	28			34
11th	1809-11	48	94			142	6	28			34
12th	1811-13	36	108			144	6	30			36
13th	1813-15	68	112			180	9	27			36
14th	1815-17	65	117			182	11	25			36
15th	1817-19	42	141			183	10	34			44
16th	1819-21	27	156			183	7	35			42
17th	1821-23	25	158			183	4	44			48
18th	1823-25	26	187			213	4	44			48
Congress	Period	House					Senate
Congress	Period	Dem	Nat-Rep³	Other	Vacant	Total	Dem	Nat-Rep³	Other	Vacant	Total
19th	1825-27	97⁴	105⁴			202	20⁴	26⁴			46
20th	1827-29	119⁴	94⁴			213	28⁴	20⁴			48
21st	1829-31	139	74			213	26	22			48
22nd	1831-33	141	58			199	25	21	2		48
23rd	1833-35	147	53⁵	60		260	20		8		48
Congress	Period	House					Senate
Congress	Period	Dem	Whig	Other	Vacant	Total	Dem	Whig	Other	Vacant	Total
24th	1835-37	145	98			243	27	25			52
25th	1837-39	108	107	24		239	30	18	4		52
26th	1839-41	124	118			242	28	22			50
27th	1841-43	102	133	6		241	22	28	2		52
28th	1843-45	142	79	1		222	25	28	1		54
29th	1845-47	143	77	6		226	31	25			56
30th	1847-49	108	115	4		227	36	21	1		58
31st	1849-51	112	109	9		230	35	25	2		62
32nd	1851-53	140	88	5		233	35	24	3		62
33rd	1853-55	159	71	4		234	38	22	2		62
Congress	Period	House					Senate
Congress	Period	Dem	Rep	Other	Vacant	Total	Dem	Rep	Other	Vacant	Total
34th	1855-57	83	108	43		234	42	15	5		62
35th	1857-59	131	92	14		237	39	20	5		64
36th	1859-61	101	113	23		237	38	26	2		66
37th	1861-63	42	106	28	2	178	11	31	7	1	50
38th	1863-65	80	103			183	11	39			50
39th	1865-67	46	145⁶			191	10	42			52
40th	1867-69	49	143		1	193	11	42			53
41st	1869-71	73	170			243	11	61		2	74
42nd	1871-73	104	139			243	17	57			74
43rd	1873-75	88	203		2	293	19	54		1	74
44th	1875-77	181	107	3	2	293	29	46		1	76
45th	1877-79	156	137			293	36	39	1		76
46th	1879-81	150	128	14	1	293	43	33			76
47th	1881-83	130	152	11		293	37	37	2		76
48th	1883-85	200	119	6		325	36	40			76
49th	1885-87	182	140	2	1	325	34	41		1	76
50th	1887-89	170	151	4		325	37	39			76
51st	1889-91	156	173	1		330	37	47			84
52nd	1891-93	231	88	14		333	39	47	2		88
53rd	1893-95	220	126	10		356	44	38	3	3	88
54th	1895-97	104	246	7		357	39	44	5		88
55th	1897-99	134	206	16	1	357	34	46	10		90
56th	1899-01	163	185	9		357	26	53	11		90
57th	1901-03	153	198	5	1	357	29	56	3	2	90
58th	1903-05	178	207		1	386	32	58			90
59th	1905-07	136	250			386	32	58			90
60th	1907-09	164	222			386	29	61		2	92
61st	1909-11	172	219			391	32	59		1	92
62nd	1911-13	228	162	1		391	42	49		1	92
63rd	1913-15	290	127	18		435	51	44	1		96
64th	1915-17	231	193	8	3	435	56	39	1		96
65th	1917-19	210	216	9		435	53	42	1		96
66th	1919-21	191	237	7		435	47	48	1		96
67th	1921-23	132	300	1	2	435	37	59			96
68th	1923-25	207	225	3		435	43	51	2		96
69th	1925-27	183	247	5		435	40	54	1	1	96
70th	1927-29	195	237	3		435	47	48	1		96
71st	1929-31	163	267	1	4	435	39	56	1		96
72nd	1931-33	216	218	1		435	47	48	1		96
73rd	1933-35	313	117	5		435	59	36	1		96
74th	1935-37	322	103	10		435	69	25	2		96
75th	1937-39	333	89	13		435	75	17	4		96
76th	1939-41	262	169	4		435	69	23	4		96
77th	1941-43	267	162	6		435	66	28	2		96
78th	1943-45	222	209	4		435	57	38	1		96
79th	1945-47	243	190	2		435	57	38	1		96
80th	1947-49	188	246	1		435	45	51			96
81st	1949-51	263	171	1		435	54	42			96
82nd	1951-53	234	199	2		435	48	47	1		96
83rd	1953-55	213	221	1		435	46	48	2		96
84th	1955-57	232	203			435	48	47	1		96
85th	1957-59	234	201			435	49	47			96
86th	1959-61	283	153			436	64	34			98
87th	1961-63	262	175			437	64	36			100
88th	1963-65	258	176		1	435	67	33			100
89th	1965-67	295	140			435	68	32			100
90th	1967-69	248	187			435	64	36			100
91st	1969-71	243	192			435	58	42			100
92nd	1971-73	255	180			435	54	44	2		100
93rd	1973-75	242	192	1		435	56	42	2		100
94th	1975-77	291	144	1		436	61	37	2		100
95th	1977-79	292	143			435	61	38	1		100
96th	1979-81	277	158			435	58	41	1		100
97th	1981-83	242	192	1		435	46	53	1		100
98th	1983-85	269	166			435	46	54			100
99th	1985-87	253	182			435	47	53			100
100th	1987-89	258	177			435	55	45			100
101st	1989-91	260	175			435	55	45			100
102nd	1991-93	267	167	1		435	56	44			100
103rd	1993-95	258	176	1		435	57	43			100
104th	1995-97	204	230	1		435	48	52			100
105th	1997-99	207	226	1	1	435	45	55			100
106th	1999-01	211	223	1		435	45	55			100

1. Democratic-Republicans. 2. Until 1791 the opposition party were simply known as “anti-Federalists”. 3. National Republicans. 4. Before 1829 the National Republicans were “pro-administration” and the Democrats were “anti-administration”. 5. Result is for the Anti-Mason Party. 6. In 1864 Republicans ran on a “National Union” ticket.

Political Divisions of Congress

Political Divisions of Congress

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