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Table 1 Years covered, total number of members (nodes), number of Democrats (excluding leaders), number of Republicans (excluding leaders), number of Democrat leaders, number of Republican leaders, and number of roll call votes for each House

From: Semi-supervised graph labelling reveals increasing partisanship in the United States Congress

Congress

Years

Members

  

Leaders

 

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

  1. Houses where the number of Democrats is shown in bold had a Democrat majority, and Houses where the number of Republicans is shown in bold had a Republican majority