| Referendum du 29 mai 2005 | ||||||||
| UDESR 91 | Inscrits | Votants | Exprimés | Participation | OUI | % | NON | % |
| Total Département | 686 382 | 490 387 | 480 479 | 63,73% | 236 520 | 49,23% | 243 959 | 50,77% |
| 1° Circonscription Manuel VALLS | Inscrits | Votants | Exprimés | Participation | ||||
| Corbeil-Essonnes | 17 609 | 11 443 | 11 223 | 63,73% | 4 450 | 39,65% | 6 773 | 60,35% |
| Villabé | 2 744 | 2 015 | 1 974 | 71,94% | 765 | 38,75% | 1 209 | 61,25% |
| Total Corbeil-Villabé | 20 353 | 13 458 | 13 197 | 64,84% | 5 215 | 39,52% | 7 982 | 60,48% |
| Bondoufle | 6 574 | 4 499 | 4 403 | 66,98% | 2 213 | 50,26% | 2 190 | 49,74% |
| Courcouronnes | 6 611 | 4 679 | 4 583 | 69,32% | 2 329 | 50,82% | 2 254 | 49,18% |
| Evry | 20 860 | 13 668 | 13 378 | 64,13% | 6 064 | 45,33% | 7 314 | 54,67% |
| Lisses | 4 764 | 3 298 | 3 219 | 67,57% | 1 349 | 41,91% | 1 870 | 58,09% |
| Total cantons Evry | 38 809 | 26 144 | 25 583 | 65,92% | 11 955 | 46,73% | 13 628 | 53,27% |
| Total circonscription 1 | 59 162 | 39 602 | 38 780 | 65,55% | 17 170 | 44,28% | 21 610 | 55,72% |
| 2° Circonscription | Inscrits | Votants | Exprimés | Participation | OUI | % | NON | % |
| Boissy le Sec | 477 | 343 | 336 | 70,44% | 155 | 46,13% | 181 | 53,87% |
| Boutervilliers | 245 | 182 | 175 | 71,43% | 82 | 46,86% | 93 | 53,14% |
| Bouville | 479 | 372 | 367 | 76,62% | 184 | 50,14% | 183 | 49,86% |
| Brière les Scelles | 658 | 524 | 518 | 78,72% | 214 | 41,31% | 304 | 58,69% |
| Chalo St Mars | 773 | 605 | 592 | 76,58% | 251 | 42,40% | 341 | 57,60% |
| Etampes | 10 542 | 7 304 | 7 131 | 67,64% | 2 688 | 37,69% | 4 443 | 62,31% |
| Morigny-Champigny | 3 180 | 2 211 | 2 169 | 68,21% | 1 017 | 46,89% | 1 152 | 53,11% |
| Ormoy la Rivière | 678 | 506 | 490 | 72,27% | 229 | 46,73% | 261 | 53,27% |
| Puiselet le Marais | 212 | 174 | 167 | 78,77% | 87 | 52,10% | 80 | 47,90% |
| St Hilaire | 260 | 205 | 205 | 78,85% | 91 | 44,39% | 114 | 55,61% |
| Valpuiseaux | 416 | 317 | 313 | 75,24% | 134 | 42,81% | 179 | 57,19% |
| Total canton Etampes | 17 920 | 12 743 | 12 463 | 69,55% | 5 132 | 41,18% | 7 331 | 58,82% |
| Baulne | 780 | 590 | 576 | 73,85% | 246 | 42,71% | 330 | 57,29% |
| Boissy le Cutté | 716 | 505 | 495 | 69,13% | 180 | 36,36% | 315 | 63,64% |
| Boutigny/Essonne | 2 168 | 1 585 | 1 557 | 71,82% | 657 | 42,20% | 900 | 57,80% |
| Cerny | 2 147 | 1 548 | 1 521 | 70,84% | 676 | 44,44% | 845 | 55,56% |
| D'Huison-Longueville | 893 | 674 | 658 | 73,68% | 309 | 46,96% | 349 | 53,04% |
| La Ferté Alais | 2 587 | 1 720 | 1 696 | 65,56% | 827 | 48,76% | 869 | 51,24% |
| Guigneville | 655 | 474 | 466 | 71,15% | 202 | 43,35% | 264 | 56,65% |
| Itteville | 3 542 | 2 666 | 2 622 | 74,03% | 1 089 | 41,53% | 1 533 | 58,47% |
| Mondeville | 496 | 363 | 352 | 70,97% | 157 | 44,60% | 195 | 55,40% |
| Orveau | 156 | 117 | 115 | 73,72% | 62 | 53,91% | 53 | 46,09% |
| Vayres/Essonne | 613 | 438 | 431 | 70,31% | 180 | 41,76% | 251 | 58,24% |
| Videlles | 468 | 388 | 379 | 80,98% | 169 | 44,59% | 210 | 55,41% |
| Total canton La Ferté-Alais | 15 221 | 11 068 | 10 868 | 71,40% | 4 754 | 43,74% | 6 114 | 56,26% |
| Auvernaux | 181 | 137 | 135 | 74,59% | 57 | 42,22% | 78 | 57,78% |
| Ballancourt | 4 439 | 3 129 | 3 048 | 68,66% | 1 341 | 44,00% | 1 707 | 56,00% |
| Champcueil | 1 495 | 1 116 | 1 095 | 73,24% | 502 | 45,84% | 593 | 54,16% |
| Chevannes | 903 | 716 | 708 | 78,41% | 325 | 45,90% | 383 | 54,10% |
| Coudray-Montceaux | 2 065 | 1 424 | 1 405 | 68,04% | 714 | 50,82% | 691 | 49,18% |
| Echarcon | 538 | 388 | 380 | 70,63% | 178 | 46,84% | 202 | 53,16% |
| Fontenay le Vicomte | 614 | 491 | 481 | 78,34% | 230 | 47,82% | 251 | 52,18% |
| Mennecy | 8 846 | 6 434 | 6 312 | 71,35% | 3 764 | 59,63% | 2 548 | 40,37% |
| Nainville les Roches | 313 | 236 | 228 | 72,84% | 101 | 44,30% | 127 | 55,70% |
| Ormoy | 897 | 696 | 682 | 76,03% | 332 | 48,68% | 350 | 51,32% |
| Vert le Grand | 1 432 | 1 076 | 1 055 | 73,67% | 509 | 48,25% | 546 | 51,75% |
| Vert le Petit | 1 658 | 1 161 | 1 132 | 68,28% | 519 | 45,85% | 613 | 54,15% |
| Total canton Mennecy | 23 381 | 17 004 | 16 661 | 71,26% | 8 572 | 51,45% | 8 089 | 48,55% |
| Abbeville la Rivière | 211 | 161 | 161 | 76,30% | 72 | 44,72% | 89 | 55,28% |
| Angerville | 2 071 | 1 430 | 1 386 | 66,92% | 526 | 37,95% | 860 | 62,05% |
| Arrancourt | 111 | 86 | 85 | 76,58% | 33 | 38,82% | 52 | 61,18% |
| Blandy | 85 | 69 | 66 | 77,65% | 29 | 43,94% | 37 | 56,06% |
| Bois-Herpin | 48 | 35 | 35 | 72,92% | 10 | 28,57% | 25 | 71,43% |
| Boissy la Rivière | 419 | 280 | 278 | 66,35% | 140 | 50,36% | 138 | 49,64% |
| Brouy | 102 | 80 | 72 | 70,59% | 36 | 50,00% | 36 | 50,00% |
| Chalou-Moulineux | 302 | 227 | 224 | 74,17% | 78 | 34,82% | 146 | 65,18% |
| Champmotteux | 174 | 130 | 127 | 72,99% | 51 | 40,16% | 76 | 59,84% |
| Congerville-Thionville | 170 | 123 | 119 | 70,00% | 61 | 51,26% | 58 | 48,74% |
| Estouches | 158 | 117 | 116 | 73,42% | 39 | 33,62% | 77 | 66,38% |
| Fontaine la Rivière | 120 | 90 | 87 | 72,50% | 37 | 42,53% | 50 | 57,47% |
| La Forêt Ste Croix | 319 | 234 | 231 | 72,41% | 90 | 38,96% | 141 | 61,04% |
| Guillerval | 582 | 397 | 390 | 67,01% | 159 | 40,77% | 231 | 59,23% |
| Marolles en Beauce | 135 | 112 | 107 | 79,26% | 40 | 37,38% | 67 | 62,62% |
| Méréville | 2 176 | 1 551 | 1 515 | 69,62% | 626 | 41,32% | 889 | 58,68% |
| Mespuits | 129 | 108 | 107 | 82,95% | 35 | 32,71% | 72 | 67,29% |
| Monnerville | 270 | 183 | 177 | 65,56% | 68 | 38,42% | 109 | 61,58% |
| Pussay | 1 082 | 793 | 774 | 71,53% | 294 | 37,98% | 480 | 62,02% |
| Roinvilliers | 61 | 53 | 51 | 83,61% | 29 | 56,86% | 22 | 43,14% |
| Saclas | 1 016 | 766 | 755 | 74,31% | 281 | 37,22% | 474 | 62,78% |
| St Cyr la Rivière | 332 | 288 | 274 | 82,53% | 113 | 41,24% | 161 | 58,76% |
| Total canton Méréville | 10 073 | 7 313 | 7 137 | 70,85% | 2 847 | 39,89% | 4 290 | 60,11% |
| Boigneville | 390 | 279 | 275 | 64,13% | 127 | 46,18% | 148 | 53,82% |
| Buno-Bonnevaux | 354 | 290 | 282 | 79,66% | 133 | 47,16% | 149 | 52,84% |
| Courances | 276 | 228 | 226 | 81,88% | 128 | 56,64% | 98 | 43,36% |
| Courdimanche/Essonne | 217 | 174 | 171 | 78,80% | 77 | 45,03% | 94 | 54,97% |
| Dannemois | 554 | 451 | 445 | 80,32% | 240 | 53,93% | 205 | 46,07% |
| Gironville/Essonne | 491 | 370 | 363 | 73,93% | 156 | 42,98% | 207 | 57,02% |
| Maisse | 1 840 | 1 272 | 1 240 | 67,39% | 484 | 39,03% | 756 | 60,97% |
| Milly la Forêt | 3 247 | 2 355 | 2 310 | 71,14% | 1 115 | 48,27% | 1 195 | 51,73% |
| Moigny/Ecole | 972 | 722 | 706 | 72,63% | 335 | 47,45% | 371 | 52,55% |
| Oncy/Ecole | 652 | 514 | 509 | 78,07% | 237 | 46,56% | 272 | 53,44% |
| Prunay/Essonne | 239 | 188 | 184 | 76,99% | 86 | 46,74% | 98 | 53,26% |
| Soisy/Ecole | 973 | 713 | 703 | 72,25% | 370 | 52,63% | 333 | 47,37% |
| Total canton Milly-la-Forêt | 10 205 | 7 556 | 7 414 | 72,65% | 3 488 | 47,05% | 3 926 | 52,95% |
| Total circonscription 2 | 76 800 | 55 684 | 54 543 | 71,02% | 24 793 | 45,46% | 29 750 | 54,54% |
| 3° Circonscription | Inscrits | Votants | Exprimés | Participation | OUI | % | NON | % |
| Arpajon | 5 201 | 3 550 | 3 466 | 66,64% | 1 673 | 48,27% | 1 793 | 51,73% |
| Avrainville | 465 | 365 | 358 | 76,99% | 179 | 50,00% | 179 | 50,00% |
| Bruyères le Chatel | 1 913 | 1 471 | 1 435 | 75,01% | 782 | 54,49% | 653 | 45,51% |
| Cheptainville | 1 072 | 832 | 818 | 76,31% | 392 | 47,92% | 426 | 52,08% |
| Egly | 2 926 | 2 070 | 2 031 | 69,41% | 920 | 45,30% | 1 111 | 54,70% |
| Guibeville | 436 | 332 | 323 | 74,08% | 146 | 45,20% | 177 | 54,80% |
| Leuville | 3 380 | 2 500 | 2 458 | 72,72% | 1 098 | 44,67% | 1 360 | 55,33% |
| La Norville | 2 842 | 2 171 | 2 111 | 74,28% | 1 039 | 49,22% | 1 072 | 50,78% |
| Ollainville | 2 543 | 1 896 | 1 855 | 72,95% | 912 | 49,16% | 943 | 50,84% |
| St Germain lès Arpajon | 4 910 | 3 221 | 3 163 | 64,42% | 1 309 | 41,38% | 1 854 | 58,62% |
| Total canton Arpajon | 25 688 | 18 408 | 18 018 | 70,14% | 8 450 | 46,90% | 9 568 | 53,10% |
| Brétigny | 11 983 | 8 637 | 8 449 | 70,51% | 3 918 | 46,37% | 4 531 | 53,63% |
| Leudeville | 841 | 662 | 638 | 75,86% | 333 | 52,19% | 305 | 47,81% |
| Marolles en H. | 3 380 | 2 500 | 2 458 | 72,72% | 1 098 | 44,67% | 1 360 | 55,33% |
| Le Plessis-Pâté | 2 342 | 1 791 | 1 738 | 74,21% | 897 | 51,61% | 841 | 48,39% |
| St Vrain | 1 872 | 1 390 | 1 366 | 72,97% | 703 | 51,46% | 663 | 48,54% |
| Total canton Brétigny | 20 418 | 14 980 | 14 649 | 71,75% | 6 949 | 47,44% | 7 700 | 52,56% |
| Authon la Plaine | 236 | 181 | 174 | 73,73% | 67 | 38,51% | 107 | 61,49% |
| Chatignonville | 67 | 61 | 61 | 91,04% | 38 | 62,30% | 23 | 37,70% |
| Corbreuse | 1 033 | 816 | 799 | 77,35% | 376 | 47,06% | 423 | 52,94% |
| Dourdan | 5 756 | 4 140 | 4 057 | 70,48% | 2 011 | 49,57% | 2 046 | 50,43% |
| La Forêt le Roi | 319 | 234 | 231 | 72,41% | 90 | 38,96% | 141 | 61,04% |
| Les Granges le Roi | 741 | 522 | 508 | 68,56% | 219 | 43,11% | 289 | 56,89% |
| Mérobert | 368 | 282 | 274 | 74,46% | 113 | 41,24% | 161 | 58,76% |
| Plessis-St Benoist | 218 | 176 | 174 | 79,82% | 83 | 47,70% | 91 | 52,30% |
| Richarville | 319 | 277 | 273 | 85,58% | 124 | 45,42% | 149 | 54,58% |
| Roinville | 732 | 575 | 561 | 76,64% | 274 | 48,84% | 287 | 51,16% |
| St Escobille | 300 | 219 | 216 | 72,00% | 98 | 45,37% | 118 | 54,63% |
| Total canton Dourdan | 10 089 | 7 483 | 7 328 | 72,63% | 3 493 | 47,67% | 3 835 | 52,33% |
| Auvers St Georges | 750 | 579 | 565 | 75,33% | 243 | 43,01% | 322 | 56,99% |
| Bouray sur Juine | 1 280 | 998 | 980 | 76,56% | 427 | 43,57% | 553 | 56,43% |
| Chamarande | 739 | 570 | 550 | 74,42% | 257 | 46,73% | 293 | 53,27% |
| Chauffour les Etréchy | 101 | 85 | 83 | 82,18% | 47 | 56,63% | 36 | 43,37% |
| Etréchy | 4 901 | 3 462 | 3 393 | 69,23% | 1 582 | 46,63% | 1 811 | 53,37% |
| Janville sur Juine | 1 344 | 1 035 | 1 022 | 76,04% | 468 | 45,79% | 554 | 54,21% |
| Lardy | 3 727 | 2 789 | 2 723 | 73,06% | 1 260 | 46,27% | 1 463 | 53,73% |
| Mauchamps | 192 | 152 | 149 | 77,60% | 75 | 50,34% | 74 | 49,66% |
| Souzy la Briche | 199 | 156 | 154 | 77,39% | 68 | 44,16% | 86 | 55,84% |
| Torfou | 189 | 156 | 152 | 80,42% | 93 | 61,18% | 59 | 38,82% |
| Villeconin | 510 | 390 | 382 | 74,90% | 205 | 53,66% | 177 | 46,34% |
| Villeneuve/Auvers | 446 | 337 | 327 | 73,32% | 111 | 33,94% | 216 | 66,06% |
| Total canton Etréchy | 14 378 | 10 709 | 10 480 | 72,89% | 4 836 | 46,15% | 5 644 | 53,85% |
| Angervilliers | 853 | 644 | 625 | 73,27% | 254 | 40,64% | 371 | 59,36% |
| Boissy sous St Yon | 2 575 | 1 873 | 1 839 | 71,42% | 763 | 41,49% | 1 076 | 58,51% |
| Breuillet | 5 022 | 3 609 | 3 562 | 70,93% | 1 844 | 51,77% | 1 718 | 48,23% |
| Breux-Jouy | 810 | 594 | 584 | 72,10% | 274 | 46,92% | 310 | 53,08% |
| St Chéron | 3 112 | 2 340 | 2 304 | 74,04% | 1 141 | 49,52% | 1 163 | 50,48% |
| St Cyr sous Dourdan | 753 | 546 | 530 | 70,39% | 297 | 56,04% | 233 | 43,96% |
| St Maurice Montcouronne | 1 101 | 768 | 757 | 68,76% | 388 | 51,25% | 369 | 48,75% |
| St Sulpice de Favières | 290 | 224 | 220 | 75,86% | 134 | 60,91% | 86 | 39,09% |
| Saint-Yon | 596 | 465 | 454 | 76,17% | 226 | 49,78% | 228 | 50,22% |
| Sermaise | 1 145 | 884 | 867 | 75,72% | 436 | 50,29% | 431 | 49,71% |
| Le Val St Germain | 992 | 769 | 753 | 75,91% | 437 | 58,03% | 316 | 41,97% |
| Total canton Saint-Chéron | 17 249 | 12 716 | 12 495 | 72,44% | 6 194 | 49,57% | 6 301 | 50,43% |
| Total circonscription 3 | 87 822 | 64 296 | 62 970 | 71,70% | 29 922 | 47,52% | 33 048 | 52,48% |
| 4° Circonscription | Inscrits | Votants | Exprimés | Participation | OUI | % | NON | % |
| Boullay les Troux | 450 | 374 | 360 | 80,00% | 239 | 66,39% | 121 | 33,61% |
| Briis sous Forges | 2 175 | 1 579 | 1 548 | 71,17% | 835 | 53,94% | 713 | 46,06% |
| Couson-Monteloup | 445 | 328 | 320 | 71,91% | 156 | 48,75% | 164 | 51,25% |
| Fontenay les Briis | 1 152 | 856 | 844 | 73,26% | 433 | 51,30% | 411 | 48,70% |
| Forges les Bains | 2 188 | 1 680 | 1 645 | 75,18% | 987 | 60,00% | 658 | 40,00% |
| Gometz la Ville | 708 | 574 | 567 | 80,08% | 403 | 71,08% | 164 | 28,92% |
| Gometz le Chatel | 1 305 | 1 021 | 1 008 | 77,24% | 620 | 61,51% | 388 | 38,49% |
| Janvry | 431 | 357 | 346 | 80,28% | 219 | 63,29% | 127 | 36,71% |
| Limours | 4 444 | 3 358 | 3 285 | 73,92% | 1 908 | 58,08% | 1 377 | 41,92% |
| Les Molières | 1 197 | 985 | 968 | 80,87% | 591 | 61,05% | 377 | 38,95% |
| Pecqueuse | 381 | 301 | 298 | 78,22% | 142 | 47,65% | 156 | 52,35% |
| Vaugrigneuse | 750 | 562 | 546 | 72,80% | 294 | 53,85% | 252 | 46,15% |
| Total canton Limours | 15 626 | 11 975 | 11 735 | 75,10% | 6 827 | 58,18% | 4 908 | 41,82% |
| Epinay sur Orge | 6 611 | 4 678 | 4 575 | 69,20% | 2 439 | 53,31% | 2 136 | 46,69% |
| Longjumeau | 11 926 | 7 796 | 7 608 | 63,79% | 3 545 | 46,60% | 4 063 | 53,40% |
| Villemoisson | 4 532 | 3 513 | 3 447 | 76,06% | 1 914 | 55,53% | 1 533 | 44,47% |
| Villiers sur Orge | 2 504 | 1 886 | 1 842 | 73,56% | 963 | 52,28% | 879 | 47,72% |
| Total canton Longjumeau | 25 573 | 17 873 | 17 472 | 68,32% | 8 861 | 50,72% | 8 611 | 49,28% |
| Linas | 3 266 | 2 424 | 2 372 | 72,63% | 1 176 | 49,58% | 1 196 | 50,42% |
| Longpont/Orge | 3 675 | 2 601 | 2 548 | 69,33% | 1 386 | 54,40% | 1 162 | 45,60% |
| Marcoussis | 4 906 | 3 638 | 3 549 | 72,34% | 1 891 | 53,28% | 1 658 | 46,72% |
| Montlhéry | 3 660 | 2 534 | 2 497 | 68,22% | 1 363 | 54,59% | 1 134 | 45,41% |
| Nozay | 2 762 | 2 083 | 2 048 | 74,15% | 1 172 | 57,23% | 876 | 42,77% |
| St Jean de Beauregard | 202 | 202 | 152 | 75,25% | 82 | 53,95% | 70 | 46,05% |
| La Ville du Bois | 3 735 | 2 628 | 2 576 | 68,97% | 1 265 | 49,11% | 1 311 | 50,89% |
| Total canton Montlhéry | 22 206 | 16 110 | 15 742 | 70,89% | 8 335 | 52,95% | 7 407 | 47,05% |
| Ballainvilliers | 1 988 | 1 523 | 1 494 | 75,15% | 838 | 56,09% | 656 | 43,91% |
| Champlan | 1 586 | 1 051 | 1 032 | 65,07% | 447 | 43,31% | 585 | 56,69% |
| Saulx les Chartreux | 3 015 | 2 292 | 2 237 | 74,20% | 1 059 | 47,34% | 1 178 | 52,66% |
| Villebon/yvette | 6 495 | 5 095 | 4 969 | 76,51% | 2 909 | 58,54% | 2 060 | 41,46% |
| Villejust | 1 096 | 818 | 813 | 74,18% | 379 | 46,62% | 434 | 53,38% |
| Total canton Villebon/Yvette | 14 180 | 10 779 | 10 545 | 74,37% | 5 632 | 53,41% | 4 913 | 46,59% |
| Total circonscription 4 | 77 585 | 56 737 | 55 494 | 71,53% | 29 655 | 53,44% | 25 839 | 46,56% |
| 5° Circonscription | Inscrits | Votants | Exprimés | Participation | OUI | % | NON | % |
| Bièvres | 2 874 | 2 184 | 2 147 | 74,70% | 1 449 | 67,49% | 698 | 32,51% |
| Saclay | 2 000 | 1 595 | 1 564 | 78,20% | 953 | 60,93% | 611 | 39,07% |
| St Aubin | 526 | 437 | 432 | 82,13% | 330 | 76,39% | 102 | 23,61% |
| Vauhallan | 1 450 | 1 166 | 1 145 | 78,97% | 721 | 62,97% | 424 | 37,03% |
| Verrières le Buisson | 10 922 | 8 476 | 8 355 | 76,50% | 5 860 | 70,14% | 2 495 | 29,86% |
| Villiers le Bâcle | 797 | 677 | 663 | 83,19% | 353 | 53,24% | 310 | 46,76% |
| Total canton Bièvres | 18 569 | 14 535 | 14 306 | 77,04% | 9 666 | 67,57% | 4 640 | 32,43% |
| Bures/Yvette | 6 128 | 4 965 | 4 868 | 79,44% | 3 323 | 68,26% | 1 545 | 31,74% |
| Orsay | 10 148 | 8 031 | 7 850 | 77,36% | 5 113 | 65,13% | 2 737 | 34,87% |
| Total canton Orsay | 16 276 | 12 996 | 12 718 | 78,14% | 8 436 | 66,33% | 4 282 | 33,67% |
| Gif/Yvette | 15 176 | 11 715 | 11 502 | 75,79% | 8 444 | 73,41% | 3 058 | 26,59% |
| Total canton Gif/Yvette | 15 176 | 11 715 | 11 502 | 75,79% | 8 444 | 73,41% | 3 058 | 26,59% |
| Les Ulis | 11 194 | 7 637 | 7 480 | 66,82% | 3 336 | 44,60% | 4 144 | 55,40% |
| Total canton Les Ulis | 11 194 | 7 637 | 7 480 | 66,82% | 3 336 | 44,60% | 4 144 | 55,40% |
| Total circonscription 5 | 61 215 | 46 883 | 46 006 | 75,15% | 29 882 | 64,95% | 16 124 | 35,05% |
| 6° Circonscription François LAMY | Inscrits | Votants | Exprimés | Participation | ||||
| Chilly-Mazarin | 10 519 | 7 244 | 7 107 | 67,56% | 3 494 | 49,16% | 3 613 | 50,84% |
| Morangis | 6 770 | 4 809 | 4 710 | 69,57% | 2 274 | 48,28% | 2 436 | 51,72% |
| Wissous | 3 893 | 2 697 | 2 627 | 67,48% | 1 419 | 54,02% | 1 208 | 45,98% |
| Total canton Chilly-Mazarin | 21 182 | 14 750 | 14 444 | 68,19% | 7 187 | 49,76% | 7 257 | 50,24% |
| Massy | 21 559 | 14 997 | 14 712 | 68,24% | 7 239 | 49,20% | 7 473 | 50,80% |
| Total cantons Massy | 21 559 | 14 997 | 14 712 | 68,24% | 7 239 | 49,20% | 7 473 | 50,80% |
| Igny | 6 559 | 4 904 | 4 800 | 73,18% | 2 812 | 58,58% | 1 988 | 41,42% |
| Palaiseau | 18 420 | 13 780 | 13 530 | 73,45% | 7 686 | 56,81% | 5 844 | 43,19% |
| Total canton Palaiseau | 24 979 | 18 684 | 18 330 | 73,38% | 10 498 | 57,27% | 7 832 | 42,73% |
| Total circonscription 6 | 67 720 | 48 431 | 47 486 | 70,12% | 24 924 | 52,49% | 22 562 | 47,51% |
| 7° Circonscription | Inscrits | Votants | Exprimés | Participation | OUI | % | NON | % |
| Athis-Mons | 15 900 | 10 140 | 9 933 | 62,47% | 4 276 | 43,05% | 5 657 | 56,95% |
| Paray | 4 779 | 3 172 | 3 110 | 65,08% | 1 265 | 40,68% | 1 845 | 59,32% |
| Total canton Athis-Mons | 20 679 | 13 312 | 13 043 | 63,07% | 5 541 | 42,48% | 7 502 | 57,52% |
| Juvisy/Orge | 7 419 | 5 256 | 5 152 | 69,44% | 2 598 | 50,43% | 2 554 | 49,57% |
| Total ville Juvisy/Orge | 7 419 | 5 256 | 5 152 | 69,44% | 2 598 | 50,43% | 2 554 | 49,57% |
| Savigny/Orge | 20 925 | 14 880 | 14 598 | 69,76% | 7 283 | 49,89% | 7 315 | 50,11% |
| Total ville Savigny/Orge | 20 925 | 14 880 | 14 598 | 69,76% | 7 283 | 49,89% | 7 315 | 50,11% |
| Viry-Châtillon | 16 635 | 11 802 | 11 552 | 69,44% | 4 864 | 42,11% | 6 688 | 57,89% |
| Total canton Viry-Châtillon | 16 635 | 11 802 | 11 552 | 69,44% | 4 864 | 42,11% | 6 688 | 57,89% |
| Total circonscription 7 | 65 658 | 45 250 | 44 345 | 67,54% | 20 286 | 45,75% | 24 059 | 54,25% |
| 8° Circonscription | Inscrits | Votants | Exprimés | Participation | OUI | % | NON | % |
| Brunoy | 15 747 | 11 332 | 11 125 | 70,65% | 5 622 | 50,53% | 5 503 | 49,47% |
| Total canton Brunoy | 15 747 | 11 332 | 11 125 | 70,65% | 5 622 | 50,53% | 5 503 | 49,47% |
| Montgeron | 13 872 | 9 984 | 9 798 | 70,63% | 4 720 | 48,17% | 5 078 | 51,83% |
| Total canton Montgeron | 13 872 | 9 984 | 9 798 | 70,63% | 4 720 | 48,17% | 5 078 | 51,83% |
| Vigneux/Seine | 13 985 | 9 217 | 9 008 | 64,41% | 2 976 | 33,04% | 6 032 | 66,96% |
| Total canton Vigneux/Seine | 13 985 | 9 217 | 9 008 | 64,41% | 2 976 | 33,04% | 6 032 | 66,96% |
| Crosne | 5 521 | 3 914 | 3 830 | 69,37% | 1 547 | 40,39% | 2 283 | 59,61% |
| Yerres | 18 882 | 13 757 | 13 503 | 71,51% | 5 723 | 42,38% | 7 780 | 57,62% |
| Total canton Yerres | 24 403 | 17 671 | 17 333 | 71,03% | 7 270 | 41,94% | 10 063 | 58,06% |
| Total circonscription 8 | 68 007 | 48 204 | 47 264 | 69,50% | 20 588 | 43,56% | 26 676 | 56,44% |
| 9° Circonscription | Inscrits | Votants | Exprimés | Participation | OUI | % | NON | % |
| Draveil | 17 283 | 12 313 | 12 057 | 69,76% | 5 767 | 47,83% | 6 290 | 52,17% |
| Total canton Draveil | 17 283 | 12 313 | 12 057 | 69,76% | 5 767 | 47,83% | 6 290 | 52,17% |
| Boussy St Antoine | 4 025 | 2 831 | 2 775 | 68,94% | 1 412 | 50,88% | 1 363 | 49,12% |
| Epinay sous Sénart | 5 964 | 3 801 | 3 730 | 62,54% | 1 482 | 39,73% | 2 248 | 60,27% |
| Quincy sous Sénart | 4 633 | 3 288 | 3 213 | 69,35% | 1 419 | 44,16% | 1 794 | 55,84% |
| Varennes-Jarcy | 1 481 | 1 126 | 1 099 | 74,21% | 612 | 55,69% | 487 | 44,31% |
| Total canton Epinay Ss Sénart | 16 103 | 11 046 | 10 817 | 67,17% | 4 925 | 45,53% | 5 892 | 54,47% |
| Ris-Orangis | 14 057 | 9 339 | 9 180 | 65,31% | 3 745 | 40,80% | 5 435 | 59,20% |
| Total canton Ris-Orangis | 14 057 | 9 339 | 9 180 | 65,31% | 3 745 | 40,80% | 5 435 | 59,20% |
| Etiolles | 2 155 | 1 644 | 1 617 | 75,03% | 1 085 | 67,10% | 532 | 32,90% |
| Morsang/Seine | 422 | 302 | 299 | 70,85% | 189 | 63,21% | 110 | 36,79% |
| Saintry/Seine | 3 274 | 2 522 | 2 471 | 75,47% | 1 212 | 49,05% | 1 259 | 50,95% |
| Soisy/Seine | 4 910 | 3 822 | 3 752 | 76,42% | 2 508 | 66,84% | 1 244 | 33,16% |
| St Germain les Corbeil | 4 889 | 3 733 | 3 661 | 74,88% | 2 227 | 60,83% | 1 434 | 39,17% |
| St Pierre du Perray | 3 843 | 2 779 | 2 717 | 70,70% | 1 298 | 47,77% | 1 419 | 52,23% |
| Tigery | 939 | 720 | 699 | 74,44% | 332 | 47,50% | 367 | 52,50% |
| Total canton St Germain les C. | 20 432 | 15 522 | 15 216 | 74,47% | 8 851 | 58,17% | 6 365 | 41,83% |
| Total circonscription 9 | 67 875 | 48 220 | 47 270 | 69,64% | 23 288 | 49,27% | 23 982 | 50,73% |
| 10° Circonscription Julien DRAY | Inscrits | Votants | Exprimés | Participation | ||||
| Grigny | 9 059 | 5 227 | 5 122 | 56,54% | 1 843 | 35,98% | 3 279 | 64,02% |
| Total canton Grigny | 9 059 | 5 227 | 5 122 | 56,54% | 1 843 | 35,98% | 3 279 | 64,02% |
| Fleury-Mérogis | 2 516 | 1 649 | 1 610 | 63,99% | 423 | 26,27% | 1 187 | 73,73% |
| Morsang sur Orge | 12 502 | 8 651 | 8 486 | 67,88% | 3 617 | 42,62% | 4 869 | 57,38% |
| Total canton Morsang/Orge | 15 018 | 10 300 | 10 096 | 67,23% | 4 040 | 40,02% | 6 056 | 59,98% |
| Ste Geneviève des Bois | 19 021 | 13 192 | 12 922 | 67,94% | 6 204 | 48,01% | 6 718 | 51,99% |
| Total canton Ste Geneviève | 19 021 | 13 192 | 12 922 | 67,94% | 6 204 | 48,01% | 6 718 | 51,99% |
| St Michel/Orge | 11 440 | 8 361 | 8 181 | 71,51% | 3 925 | 47,98% | 4 256 | 52,02% |
| Total canton St Michel/Orge | 11 440 | 8 361 | 8 181 | 71,51% | 3 925 | 47,98% | 4 256 | 52,02% |
| Total circonscription 10 | 54 538 | 37 080 | 36 321 | 66,60% | 16 012 | 44,08% | 20 309 | 55,92% |