Seat data is not available for this selection.
| Sno. | Constituency | Type | State | Winning Candidate | Party | Electors | Votes | Turnout | Margin | Margin% | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 45-Sheohar | GEN | Bihar | Ram Dulari Singh | Indian National Congress | 839483 | 491973 | 58.60% | 80553 | 16.40% | 1984 |
| 2 | 46-Sitamarhi | GEN | Bihar | Ranshresth Khirhar | Indian National Congress | 878566 | 478099 | 54.40% | 121544 | 25.40% | 1984 |
| 3 | 47-Madhubani | GEN | Bihar | Abdul Hannan An | Indian National Congress | 846577 | 576056 | 68.10% | 148820 | 25.80% | 1984 |
| 4 | 48-Jhanjharpur | GEN | Bihar | Gauri Shankar Rajhans | Indian National Congress | 782753 | 589464 | 75.30% | 205392 | 34.80% | 1984 |
| 5 | 50-Araria | SC | Bihar | Doomar Lal Baitha | Indian National Congress | 791489 | 472148 | 59.70% | 198886 | 42.10% | 1984 |
| 6 | 51-Kishanganj | GEN | Bihar | Jamilur Rahman | Indian National Congress | 798096 | 444904 | 55.80% | 116130 | 26.10% | 1984 |
| 7 | 52-Katihar | GEN | Bihar | Tariq Anwar | Indian National Congress | 672232 | 470487 | 70.00% | 45943 | 9.80% | 1984 |
| 8 | 53-Purnia | GEN | Bihar | Madhuree Singh | Indian National Congress | 773952 | 442678 | 57.20% | 190400 | 43.00% | 1984 |
| 9 | 54-Madhepura | GEN | Bihar | Mahabir Prasad Yadav | Indian National Congress | 836565 | 557547 | 66.70% | 75297 | 13.50% | 1984 |
| 10 | 55-Darbhanga | GEN | Bihar | Vijay Kumar Mishra | Lok Dal | 770111 | 442007 | 57.40% | 72167 | 16.30% | 1984 |
| 11 | 56-Muzaffarpur | GEN | Bihar | Laliteshwar Prasad Shahi | Indian National Congress | 805213 | 556443 | 69.10% | 148974 | 26.80% | 1984 |
| 12 | 57-Vaishali | GEN | Bihar | Kishori Sinha | Indian National Congress | 808346 | 571719 | 70.70% | 19953 | 3.50% | 1984 |
| 13 | 58-Gopalganj | GEN | Bihar | Kali Prasad Pandey | Independent | 785919 | 493043 | 62.70% | 177092 | 35.90% | 1984 |
| 14 | 59-Siwan | GEN | Bihar | Abdul Ghafoor | Indian National Congress | 781000 | 421832 | 54.00% | 137992 | 32.70% | 1984 |
| 15 | 60-Maharajganj | GEN | Bihar | Krishnapratap Singh | Indian National Congress | 818305 | 409900 | 50.10% | 133904 | 32.70% | 1984 |
| 16 | 62-Hajipur | SC | Bihar | Ram Ratan Ram | Indian National Congress | 834167 | 593853 | 71.20% | 51216 | 8.60% | 1984 |
| 17 | 64-Samastipur | GEN | Bihar | Ramdeo Rai | Indian National Congress | 909700 | 579340 | 63.70% | 108361 | 18.70% | 1984 |
| 18 | 65-Begusarai | GEN | Bihar | Krishna Shahi | Indian National Congress | 834398 | 535039 | 64.10% | 281636 | 52.60% | 1984 |
| 19 | 66-Khagaria | GEN | Bihar | Chandra Shekhar Prasad Verma | Indian National Congress | 765769 | 490839 | 64.10% | 141526 | 28.80% | 1984 |
| 20 | 67-Bhagalpur | GEN | Bihar | Bhagwat Jha Azad | Indian National Congress | 851928 | 571619 | 67.10% | 30485 | 5.30% | 1984 |
| 21 | 68-Banka | GEN | Bihar | Manorma Singh | Indian National Congress | 770286 | 487005 | 63.20% | 151972 | 31.20% | 1984 |
| 22 | 69-Munger | GEN | Bihar | Devendra Pd. Yadav | Indian National Congress | 862284 | 550090 | 63.80% | 163343 | 29.70% | 1984 |
| 23 | 70-Nalanda | GEN | Bihar | Vijay Kumar Yadav | Communist Party Of India | 903642 | 630485 | 69.80% | 39471 | 6.30% | 1984 |
| 24 | 71-Patna Sahib | GEN | Bihar | C. P. Thakur | Indian National Congress | 963346 | 504781 | 52.40% | 72181 | 14.30% | 1984 |
| 25 | 73-Arrah | GEN | Bihar | Bali Ram Bhagat | Indian National Congress | 890008 | 432394 | 48.60% | 154922 | 35.80% | 1984 |
| 26 | 74-Buxar | GEN | Bihar | Kamla Kant Tiwari | Indian National Congress | 881047 | 456203 | 51.80% | 55702 | 12.20% | 1984 |
| 27 | 75-Sasaram | SC | Bihar | Jagjiwan Ram | Indian Congress (J) | 826256 | 435671 | 52.70% | 1372 | 0.30% | 1984 |
| 28 | 77-Jahanabad | GEN | Bihar | Ramasharay Pd. Singh | Communist Party Of India | 939919 | 755148 | 80.30% | 30976 | 4.10% | 1984 |
| 29 | 78-Aurangabad | GEN | Bihar | Satyendra Narain Singh | Indian National Congress | 826531 | 486447 | 58.90% | 166035 | 34.10% | 1984 |
| 30 | 80-Nawada | SC | Bihar | Kunwar Ram | Indian National Congress | 957846 | 553442 | 57.80% | 237102 | 42.80% | 1984 |
| 31 | 141-Rajmahal | ST | Bihar | Seth Hembrom | Indian National Congress | 692614 | 318578 | 46.00% | 78856 | 24.80% | 1984 |
| 32 | 142-Dumka | ST | Bihar | Prithiwi Chand Kisku | Indian National Congress | 708326 | 380961 | 53.80% | 97187 | 25.50% | 1984 |
| 33 | 143-Godda | SC | Bihar | Ram Swaroop Ram | Indian National Congress | 811699 | 539430 | 66.50% | 84435 | 15.70% | 1984 |
| 34 | 143-Godda | GEN | Bihar | Saminuddin | Indian National Congress | 786972 | 435994 | 55.40% | 120373 | 27.60% | 1984 |
| 35 | 144-Chatra | GEN | Bihar | Yogeshwar Prasad Yogesh | Indian National Congress | 729752 | 382616 | 52.40% | 156542 | 40.90% | 1984 |
| 36 | 145-Kodarma | GEN | Bihar | Tilak Dhari Singh | Indian National Congress | 766871 | 366462 | 47.80% | 111383 | 30.40% | 1984 |
| 37 | 146-Giridih | GEN | Bihar | Sarfraj Ahmed | Indian National Congress | 735849 | 377359 | 51.30% | 124753 | 33.10% | 1984 |
| 38 | 147-Dhanbad | GEN | Bihar | Shankar Dayal Singh | Indian National Congress | 923926 | 503143 | 54.50% | 62295 | 12.40% | 1984 |
| 39 | 148-Ranchi | GEN | Bihar | Sheo Prasad Sahu | Indian National Congress | 737569 | 339918 | 46.10% | 108561 | 31.90% | 1984 |
| 40 | 149-Jamshedpur | GEN | Bihar | Gopeshwar | Indian National Congress | 752702 | 443298 | 58.90% | 66202 | 14.90% | 1984 |
| 41 | 150-Singhbhum | ST | Bihar | Begun Sumbrui | Indian National Congress | 614503 | 242288 | 39.40% | 60211 | 24.90% | 1984 |
| 42 | 151-Khunti | ST | Bihar | Simon Tigga | Indian National Congress | 625719 | 247762 | 39.60% | 33010 | 13.30% | 1984 |
| 43 | 152-Lohardaga | ST | Bihar | Sumati Oraon | Indian National Congress | 678981 | 273347 | 40.30% | 102067 | 37.30% | 1984 |
| 44 | 153-Palamau | SC | Bihar | Kamla Kumari | Indian National Congress | 754787 | 357940 | 47.40% | 185050 | 51.70% | 1984 |
| 45 | 154-Hazaribagh | GEN | Bihar | Damodar Pandey | Indian National Congress | 794720 | 380727 | 47.90% | 60381 | 15.90% | 1984 |
| 46 | 551-Bagaha | SC | Bihar | Bhola Raut | Indian National Congress | 708093 | 310166 | 43.80% | 165534 | 53.40% | 1984 |
| 47 | 553-Barh | GEN | Bihar | Prakash Chandra | Indian National Congress | 853413 | 610745 | 71.60% | 222736 | 36.50% | 1984 |
| 48 | 554-Bettiah | GEN | Bihar | Manoj Kumar Pande | Indian National Congress | 748524 | 406295 | 54.30% | 135268 | 33.30% | 1984 |
| 49 | 555-Bikramganj | GEN | Bihar | Tapeshwar Singh | Indian National Congress | 849458 | 589876 | 69.40% | 1413 | 0.20% | 1984 |
| 50 | 556-Chapra | GEN | Bihar | Ram Bahadur Singh | Janta Party | 780710 | 460294 | 59.00% | 26006 | 5.60% | 1984 |
| 51 | 557-Motihari | GEN | Bihar | Prabhawati Gupta | Indian National Congress | 789198 | 434105 | 55.00% | 144295 | 33.20% | 1984 |
| 52 | 558-Rosera | SC | Bihar | Ram Bhagat Paswan | Indian National Congress | 808683 | 472110 | 58.40% | 97218 | 20.60% | 1984 |
| 53 | 559-Saharsa | GEN | Bihar | Chandra Kishore Pathak | Indian National Congress | 913235 | 638061 | 69.90% | 108084 | 16.90% | 1984 |
| 54 | 734-Balia | GEN | Bihar | Chandra Bhanu Devi | Indian National Congress | 769052 | 492389 | 64.00% | 123901 | 25.20% | 1984 |