The data for the House are not as good as the data for the Senate. From PredictWise one can get a ranking of the districts, but only 20 districts have betting markets. The probabilities for the other districts are just the views of PredictWise. The 20 betting markets are from Predictit. What I have done is to take the 20 probabilites from Predictit and the remaining probabilites from PredictWise. The data that were collected on October 25, 2016, are as follows. When the probability ends in 1, this is a Predictit probability; otherwise it is a PredictWise probability. (The Predictit probabilities are in fact only two digits; the 1 is just for presentation purposes.)
Rank District Probability 1 AL - Alabama 7 1.000 2 AZ - Arizona 3 1.000 3 AZ - Arizona 7 1.000 4 CA - California 2 1.000 5 CA - California 5 1.000 6 CA - California 6 1.000 7 CA - California 9 1.000 8 CA - California 11 1.000 9 CA - California 12 1.000 10 WI - Wisconsin 4 1.000 11 WI - Wisconsin 3 1.000 12 WI - Wisconsin 2 1.000 13 CA - California 13 1.000 14 WA - Washington 10 1.000 15 WA - Washington 9 1.000 16 CA - California 14 1.000 17 WA - Washington 7 1.000 18 WA - Washington 6 1.000 19 CA - California 15 1.000 20 CA - California 16 1.000 21 CA - California 17 1.000 22 WA - Washington 2 1.000 23 WA - Washington 1 1.000 24 VT - Vermont 1 1.000 25 VA - Virginia 11 1.000 26 CA - California 18 1.000 27 CA - California 19 1.000 28 VA - Virginia 8 1.000 29 CA - California 20 1.000 30 CA - California 27 1.000 31 CA - California 28 1.000 32 CA - California 29 1.000 33 VA - Virginia 3 1.000 34 CA - California 30 1.000 35 CA - California 32 1.000 36 CA - California 33 1.000 37 CA - California 34 1.000 38 CA - California 35 1.000 39 CA - California 37 1.000 40 CA - California 38 1.000 41 TX - Texas 35 1.000 42 TX - Texas 34 1.000 43 TX - Texas 33 1.000 44 CA - California 40 1.000 45 CA - California 41 1.000 46 TX - Texas 30 1.000 47 TX - Texas 29 1.000 48 TX - Texas 28 1.000 49 CA - California 43 1.000 50 CA - California 44 1.000 51 CA - California 46 1.000 52 CA - California 47 1.000 53 CA - California 51 1.000 54 CA - California 53 1.000 55 CO - Colorado 1 1.000 56 TX - Texas 20 1.000 57 CO - Colorado 2 1.000 58 TX - Texas 18 1.000 59 CO - Colorado 7 1.000 60 TX - Texas 16 1.000 61 CT - Connecticut 1 1.000 62 CT - Connecticut 2 1.000 63 CT - Connecticut 3 1.000 64 CT - Connecticut 4 1.000 65 DE - Delaware 1 1.000 66 FL - Florida 5 1.000 67 TX - Texas 9 1.000 68 FL - Florida 9 1.000 69 FL - Florida 14 1.000 70 FL - Florida 20 1.000 71 FL - Florida 21 1.000 72 FL - Florida 22 1.000 73 FL - Florida 23 1.000 74 FL - Florida 24 1.000 75 GA - Georgia 2 1.000 76 TN - Tennessee 9 1.000 77 GA - Georgia 4 1.000 78 GA - Georgia 5 1.000 79 GA - Georgia 13 1.000 80 TN - Tennessee 5 1.000 81 HI - Hawaii 1 1.000 82 HI - Hawaii 2 1.000 83 IL - Illinois 1 1.000 84 IL - Illinois 2 1.000 85 IL - Illinois 3 1.000 86 IL - Illinois 4 1.000 87 SC - South Carolina 6 1.000 88 IL - Illinois 5 1.000 89 IL - Illinois 7 1.000 90 IL - Illinois 8 1.000 91 IL - Illinois 9 1.000 92 IL - Illinois 11 1.000 93 RI - Rhode Island 2 1.000 94 RI - Rhode Island 1 1.000 95 IL - Illinois 17 1.000 96 PA - Pennsylvania 17 1.000 97 IN - Indiana 1 1.000 98 IN - Indiana 7 1.000 99 PA - Pennsylvania 14 1.000 100 PA - Pennsylvania 13 1.000 101 KY - Kentucky 3 1.000 102 LA - Louisiana 2 1.000 103 MA - Massachusetts 1 1.000 104 MA - Massachusetts 2 1.000 105 MA - Massachusetts 3 1.000 106 MA - Massachusetts 4 1.000 107 MA - Massachusetts 5 1.000 108 MA - Massachusetts 6 1.000 109 MA - Massachusetts 7 1.000 110 MA - Massachusetts 8 1.000 111 PA - Pennsylvania 2 1.000 112 PA - Pennsylvania 1 1.000 113 MA - Massachusetts 9 1.000 114 OR - Oregon 4 1.000 115 OR - Oregon 3 1.000 116 MD - Maryland 2 1.000 117 OR - Oregon 1 1.000 118 MD - Maryland 3 1.000 119 MD - Maryland 4 1.000 120 MD - Maryland 5 1.000 121 MD - Maryland 7 1.000 122 MD - Maryland 8 1.000 123 ME - Maine 1 1.000 124 MI - Michigan 5 1.000 125 MI - Michigan 9 1.000 126 OH - Ohio 13 1.000 127 MI - Michigan 12 1.000 128 OH - Ohio 11 1.000 129 MI - Michigan 13 1.000 130 OH - Ohio 9 1.000 131 MI - Michigan 14 1.000 132 MN - Minnesota 4 1.000 133 MN - Minnesota 5 1.000 134 MO - Missouri 1 1.000 135 MO - Missouri 5 1.000 136 OH - Ohio 3 1.000 137 MS - Mississippi 2 1.000 138 NC - North Carolina 1 1.000 139 NC - North Carolina 4 1.000 140 NY - New York 26 1.000 141 NC - North Carolina 12 1.000 142 NJ - New Jersey 1 1.000 143 NJ - New Jersey 6 1.000 144 NJ - New Jersey 8 1.000 145 NJ - New Jersey 9 1.000 146 NY - New York 20 1.000 147 NJ - New Jersey 10 1.000 148 NJ - New Jersey 12 1.000 149 NY - New York 17 1.000 150 NY - New York 16 1.000 151 NY - New York 15 1.000 152 NY - New York 14 1.000 153 NY - New York 13 1.000 154 NY - New York 12 1.000 155 NM - New Mexico 1 1.000 156 NY - New York 10 1.000 157 NY - New York 9 1.000 158 NY - New York 8 1.000 159 NY - New York 7 1.000 160 NY - New York 6 1.000 161 NY - New York 5 1.000 162 NM - New Mexico 3 1.000 163 NV - Nevada 1 1.000 164 AZ - Arizona 9 0.990 165 CA - California 3 0.990 166 CA - California 26 0.990 167 CA - California 31 0.990 168 TX - Texas 15 0.990 169 CT - Connecticut 5 0.990 170 IA - Iowa 2 0.990 171 OR - Oregon 5 0.990 172 NY - New York 4 0.990 173 NH - New Hampshire 2 0.990 174 CA - California 36 0.980 175 NY - New York 18 0.980 176 MN - Minnesota 1 0.980 177 NV - Nevada 4 0.960 178 MN - Minnesota 7 0.950 179 NY - New York 25 0.940 180 VA - Virginia 4 0.920 181 NH - New Hampshire 1 0.910 182 MD - Maryland 6 0.900 183 FL - Florida 10 0.890 184 CA - California 52 0.880 185 NY - New York 3 0.830 186 IA - Iowa 1 0.830 187 TX - Texas 23 0.821 betting 188 CA - California 24 0.810 189 MN - Minnesota 2 0.781 betting 190 MN - Minnesota 8 0.770 191 FL - Florida 13 0.750 192 CA - California 7 0.730 193 NE - Nebraska 2 0.671 betting 194 NV - Nevada 3 0.670 195 NJ - New Jersey 5 0.641 betting 196 NY - New York 19 0.631 betting 197 IL - Illinois 10 0.601 betting 198 MI - Michigan 1 0.601 betting 199 AZ - Arizona 1 0.570 200 CA - California 10 0.560 201 CO - Colorado 6 0.551 betting 202 PA - Pennsylvania 16 0.520 203 CA - California 21 0.510 204 FL - Florida 26 0.501 betting 205 PA - Pennsylvania 8 0.501 betting 206 CA - California 49 0.491 betting 207 CA - California 25 0.490 208 ME - Maine 2 0.461 betting 209 NY - New York 22 0.461 betting 210 FL - Florida 18 0.411 betting 211 AZ - Arizona 2 0.380 212 MI - Michigan 7 0.370 213 IL - Illinois 12 0.360 214 VA - Virginia 10 0.351 betting 215 PA - Pennsylvania 6 0.290 216 MN - Minnesota 3 0.290 217 MI - Michigan 8 0.280 218 VA - Virginia 5 0.270 pivot for Democratic control 219 IA - Iowa 3 0.261 betting 220 NY - New York 21 0.250 221 FL - Florida 7 0.240 222 IN - Indiana 9 0.210 223 KS - Kansas 3 0.210 224 NY - New York 23 0.150 225 WI - Wisconsin 8 0.141 betting 226 UT - Utah 4 0.141 betting 227 MT - Montana 1 0.140 228 VA - Virginia 2 0.130 229 CO - Colorado 3 0.130 230 NY - New York 1 0.121 betting 231 IN - Indiana 2 0.120 232 NY - New York 24 0.101 betting 233 AK - Alaska 1 0.080 234 NJ - New Jersey 3 0.080 235 NC - North Carolina 13 0.060 236 IL - Illinois 13 0.060 237 FL - Florida 2 0.050 238 MI - Michigan 6 0.050 239 NY - New York 11 0.050 240 NJ - New Jersey 2 0.050 241 WI - Wisconsin 7 0.040 242 WI - Wisconsin 6 0.030 243 WA - Washington 8 0.030 244 WA - Washington 3 0.030 245 MI - Michigan 11 0.030 246 NC - North Carolina 2 0.030 247 MI - Michigan 3 0.030 248 PA - Pennsylvania 7 0.030 249 AR - Arkansas 2 0.020 250 WV - West Virginia 2 0.020 251 NJ - New Jersey 7 0.020 252 WI - Wisconsin 1 0.020 253 MI - Michigan 10 0.020 254 MI - Michigan 4 0.020 255 FL - Florida 15 0.020 256 GA - Georgia 12 0.020 257 IA - Iowa 4 0.020 258 OH - Ohio 14 0.010 259 OH - Ohio 15 0.010 260 PA - Pennsylvania 3 0.010 261 OH - Ohio 16 0.010 262 PA - Pennsylvania 5 0.010 263 WA - Washington 5 0.010 264 KY - Kentucky 6 0.010 265 MN - Minnesota 6 0.010 266 VA - Virginia 1 0.010 267 PA - Pennsylvania 11 0.010 268 OH - Ohio 10 0.010 269 CA - California 39 0.010 270 CA - California 45 0.010 271 OH - Ohio 6 0.010 272 KS - Kansas 2 0.010 273 CA - California 48 0.010 274 ND - North Dakota 1 0.010 275 IN - Indiana 8 0.010 276 PA - Pennsylvania 12 0.010 277 OH - Ohio 1 0.010 278 NJ - New Jersey 11 0.010 279 NY - New York 2 0.010 280 FL - Florida 6 0.010 281 FL - Florida 11 0.010 282 FL - Florida 16 0.010 283 FL - Florida 19 0.010 284 GA - Georgia 1 0.010 285 IL - Illinois 16 0.010 286 NM - New Mexico 2 0.010 287 IL - Illinois 14 0.010 288 MI - Michigan 2 0.010 289 SC - South Carolina 7 0.010 290 SC - South Carolina 5 0.010 291 NC - North Carolina 6 0.010 292 IL - Illinois 6 0.010 293 LA - Louisiana 5 0.000 294 SC - South Carolina 3 0.000 295 SC - South Carolina 2 0.000 296 SC - South Carolina 4 0.000 297 SC - South Carolina 1 0.000 298 PA - Pennsylvania 18 0.000 299 SD - South Dakota 1 0.000 300 TN - Tennessee 1 0.000 301 ID - Idaho 2 0.000 302 ID - Idaho 1 0.000 303 LA - Louisiana 6 0.000 304 OH - Ohio 5 0.000 305 MO - Missouri 3 0.000 306 NE - Nebraska 3 0.000 307 TN - Tennessee 2 0.000 308 TN - Tennessee 3 0.000 309 GA - Georgia 14 0.000 310 TN - Tennessee 4 0.000 311 PA - Pennsylvania 9 0.000 312 GA - Georgia 11 0.000 313 GA - Georgia 10 0.000 314 GA - Georgia 9 0.000 315 GA - Georgia 8 0.000 316 GA - Georgia 7 0.000 317 GA - Georgia 6 0.000 318 TN - Tennessee 6 0.000 319 TN - Tennessee 7 0.000 320 GA - Georgia 3 0.000 321 TN - Tennessee 8 0.000 322 IL - Illinois 15 0.000 323 FL - Florida 27 0.000 324 MS - Mississippi 4 0.000 325 FL - Florida 25 0.000 326 TX - Texas 1 0.000 327 TX - Texas 2 0.000 328 TX - Texas 3 0.000 329 TX - Texas 4 0.000 330 TX - Texas 5 0.000 331 NY - New York 27 0.000 332 MO - Missouri 6 0.000 333 FL - Florida 17 0.000 334 IL - Illinois 18 0.000 335 MS - Mississippi 3 0.000 336 TX - Texas 6 0.000 337 MO - Missouri 8 0.000 338 FL - Florida 12 0.000 339 PA - Pennsylvania 15 0.000 340 OH - Ohio 7 0.000 341 TX - Texas 7 0.000 342 FL - Florida 8 0.000 343 MD - Maryland 1 0.000 344 MO - Missouri 4 0.000 345 TX - Texas 8 0.000 346 FL - Florida 4 0.000 347 FL - Florida 3 0.000 348 NC - North Carolina 5 0.000 349 FL - Florida 1 0.000 350 TX - Texas 10 0.000 351 OR - Oregon 2 0.000 352 TX - Texas 11 0.000 353 TX - Texas 12 0.000 354 TX - Texas 13 0.000 355 TX - Texas 14 0.000 356 IN - Indiana 3 0.000 357 OK - Oklahoma 5 0.000 358 CO - Colorado 5 0.000 359 CO - Colorado 4 0.000 360 OH - Ohio 12 0.000 361 TX - Texas 17 0.000 362 TX - Texas 19 0.000 363 TX - Texas 21 0.000 364 IN - Indiana 4 0.000 365 TX - Texas 22 0.000 366 CA - California 50 0.000 367 IN - Indiana 5 0.000 368 IN - Indiana 6 0.000 369 NC - North Carolina 10 0.000 370 TX - Texas 24 0.000 371 KS - Kansas 1 0.000 372 TX - Texas 25 0.000 373 TX - Texas 26 0.000 374 CA - California 42 0.000 375 TX - Texas 27 0.000 376 TX - Texas 31 0.000 377 KS - Kansas 4 0.000 378 TX - Texas 32 0.000 379 TX - Texas 36 0.000 380 NC - North Carolina 7 0.000 381 UT - Utah 1 0.000 382 UT - Utah 2 0.000 383 UT - Utah 3 0.000 384 KY - Kentucky 1 0.000 385 NV - Nevada 2 0.000 386 KY - Kentucky 2 0.000 387 OH - Ohio 4 0.000 388 NJ - New Jersey 4 0.000 389 KY - Kentucky 4 0.000 390 NC - North Carolina 9 0.000 391 MS - Mississippi 1 0.000 392 NE - Nebraska 1 0.000 393 CA - California 23 0.000 394 CA - California 22 0.000 395 OK - Oklahoma 4 0.000 396 VA - Virginia 6 0.000 397 VA - Virginia 7 0.000 398 VA - Virginia 9 0.000 399 MO - Missouri 2 0.000 400 OK - Oklahoma 3 0.000 401 WA - Washington 4 0.000 402 KY - Kentucky 5 0.000 403 OK - Oklahoma 2 0.000 404 LA - Louisiana 1 0.000 405 WI - Wisconsin 5 0.000 406 NC - North Carolina 3 0.000 407 PA - Pennsylvania 10 0.000 408 CA - California 8 0.000 409 NC - North Carolina 11 0.000 410 OK - Oklahoma 1 0.000 411 OH - Ohio 8 0.000 412 CA - California 4 0.000 413 PA - Pennsylvania 4 0.000 414 WV - West Virginia 1 0.000 415 CA - California 1 0.000 416 MO - Missouri 7 0.000 417 AZ - Arizona 8 0.000 418 LA - Louisiana 3 0.000 419 AZ - Arizona 6 0.000 420 AZ - Arizona 5 0.000 421 AZ - Arizona 4 0.000 422 WV - West Virginia 3 0.000 423 OH - Ohio 2 0.000 424 NC - North Carolina 8 0.000 425 AR - Arkansas 4 0.000 426 AR - Arkansas 3 0.000 427 LA - Louisiana 4 0.000 428 AR - Arkansas 1 0.000 429 WY - Wyoming 1 0.000 430 AL - Alabama 6 0.000 431 AL - Alabama 5 0.000 432 AL - Alabama 4 0.000 433 AL - Alabama 3 0.000 434 AL - Alabama 2 0.000 435 AL - Alabama 1 0.000You can see that the pivot is the 5th district of Virginia with a probability of 0.27. If the Democrats win this district and all the districts above it, they have control of the House. According to the ranking assumption, the probabiity of this happening is 0.27.