From: Semi-supervised graph labelling reveals increasing partisanship in the United States Congress
Congress | Years | Members | Â | Â | Leaders | Â | Votes |
---|---|---|---|---|---|---|---|
 |  | Total | Dem | Rep | Dem | Rep |  |
74 | 1935 - 37 | 429 | 322 | 104 | 2 | 1 | 194 |
75 | 1937 - 39 | 431 | 338 | 91 | 1 | 1 | 135 |
76 | 1939 - 41 | 452 | 272 | 177 | 2 | 1 | 172 |
77 | 1941 - 43 | 442 | 273 | 167 | 1 | 1 | 95 |
78 | 1943 - 45 | 445 | 226 | 217 | 1 | 1 | 94 |
79 | 1945 - 47 | 444 | 249 | 193 | 1 | 1 | 149 |
80 | 1947 - 49 | 446 | 193 | 251 | 1 | 1 | 106 |
81 | 1949 - 51 | 442 | 265 | 175 | 1 | 1 | 169 |
82 | 1951 - 53 | 445 | 238 | 205 | 1 | 1 | 122 |
83 | 1953 - 55 | 439 | 217 | 220 | 1 | 1 | 63 |
84 | 1955 - 57 | 437 | 233 | 202 | 1 | 1 | 60 |
85 | 1957 - 59 | 443 | 238 | 203 | 1 | 1 | 106 |
86 | 1959 - 61 | 441 | 284 | 155 | 1 | 1 | 104 |
87 | 1961 - 63 | 449 | 270 | 176 | 2 | 1 | 123 |
88 | 1963 - 65 | 442 | 260 | 180 | 1 | 1 | 124 |
89 | 1965 - 67 | 442 | 299 | 141 | 1 | 1 | 251 |
90 | 1967 - 69 | 437 | 247 | 188 | 1 | 1 | 211 |
91 | 1969 - 71 | 448 | 248 | 198 | 1 | 1 | 139 |
92 | 1971 - 73 | 443 | 257 | 184 | 1 | 1 | 326 |
93 | 1973 - 75 | 441 | 245 | 193 | 1 | 2 | 562 |
94 | 1975 - 77 | 441 | 293 | 146 | 1 | 1 | 709 |
95 | 1977 - 79 | 441 | 293 | 146 | 1 | 1 | 783 |
96 | 1979 - 81 | 440 | 279 | 159 | 1 | 1 | 691 |
97 | 1981 - 83 | 441 | 245 | 194 | 1 | 1 | 354 |
98 | 1983 - 85 | 439 | 271 | 166 | 1 | 1 | 471 |
99 | 1985 - 87 | 439 | 256 | 181 | 1 | 1 | 554 |
100 | 1987 - 89 | 440 | 260 | 178 | 1 | 1 | 558 |
101 | 1989 - 91 | 443 | 262 | 178 | 2 | 1 | 521 |
102 | 1991 - 93 | 440 | 269 | 169 | 1 | 1 | 560 |
103 | 1993 - 95 | 440 | 259 | 179 | 1 | 1 | 735 |
104 | 1995 - 97 | 444 | 207 | 235 | 1 | 1 | 980 |
105 | 1997 - 99 | 442 | 210 | 230 | 1 | 1 | 794 |
106 | 1999 - 01 | 438 | 212 | 224 | 1 | 1 | 699 |
107 | 2001 - 03 | 441 | 212 | 227 | 1 | 1 | 530 |
108 | 2003 - 05 | 439 | 207 | 230 | 1 | 1 | 721 |
109 | 2005 - 07 | 439 | 202 | 233 | 1 | 3 | 714 |
110 | 2007 - 09 | 448 | 241 | 205 | 1 | 1 | 1233 |
111 | 2009 - 11 | 446 | 262 | 182 | 1 | 1 | 944 |
112 | 2011 - 13 | 445 | 199 | 244 | 1 | 1 | 1236 |
113 | 2013 - 15 | 444 | 203 | 238 | 1 | 2 | 888 |
114 | 2015 - 17 | 440 | 189 | 249 | 1 | 1 | 1028 |
115 | 2017 - 19 | 450 | 199 | 249 | 1 | 1 | 865 |