All assembly constituencies — Bihar assembly election, Feb 1990
324 assembly constituencies declared, sorted by largest victory.
| Assembly seat | State | Winner | Runner-up | Margin |
|---|---|---|---|---|
| KHAJAULI | Bihar | INCVILAT PASWAN 'VIHANGAM' | CPIRAM LAKHAN RAM 'RAMAN' | 1,0821.14% |
| GARHWA | Bihar | BJPGOPINATH SINGH | INCYUGAL KISHORE PANDEY | 7591.03% |
| JOKIHAT | Bihar | INCMOIDUR RAHMAN | INDBHUP NARAIN YADAV | 8940.98% |
| JALALPUR | Bihar | INCNIRMALA SINGH | CPIABHAY RAJ KISHOR RAI | 7590.91% |
| BIHAR | Bihar | BJPDEN NATH PRASAD | INCSHAKILUZZAMA | 1,4440.88% |
| BARAULI | Bihar | INDDHRUV NATH CHAUDHARY | JNPJPRAM PARVESH RAI | 8110.82% |
| BANIAPUR | Bihar | JNPJPRAM BAHADUR RAI | INCUMA PANDEY | 5980.77% |
| MAHAGAMA | Bihar | JDFAIAZ BHAGALPURI | INCAWADH BIHARI SINGH | 8200.73% |
| RUPAULI | Bihar | INDSARYUG MANDAL | BJPJAI KRISHNA SINGH | 6270.70% |
| MASAURHI | Bihar | IPFYOUGESHWAR GOP | INCPOONAM DEVI | 9660.70% |
| GOMIA | Bihar | INDMADHAW LAL SINGH | BJPCHHATRU RAM MAHTO | 5220.59% |
| SHAHPUR | Bihar | JNPJPDHARAM PAL SINGH | INDSHIVANAND TIWARI | 4550.51% |
| KATORIA | Bihar | INCSURESH PRASAD YADAV | JDHARI PRASAD YADAV | 3800.43% |
| ZIRADEI | Bihar | INDS.M. MASHABUDDIN | INCTRIBHUVAN SINGH | 3780.41% |
| HAYAGHAT | Bihar | JDKAFIL AHMAD | CPI(ML)UMADHAR PRASAD SINGH | 3820.40% |
| BHABHUA | Bihar | INCVIJAY SHANKAR PANDEY | CPIRAM LAL SINGH | 3670.39% |
| TUNDI | Bihar | JMMVINOD BIHAR MAHATO | INCUDAI KUMAR SINGH | 2990.38% |
| MANOHARPUR | Bihar | INCKRISHNA CHANDRA MUNDA | BJPGOVIND CHANDRA PURTY | 2000.35% |
| RUNISAIDPUR | Bihar | JDNAWAL KISHOR SAHI | BJPGIRJA NANDAN PRASAD YADAV | 3620.30% |
| HATIA | Bihar | BJPRAMJEE LAL SARDA | JDVIJENDRA SINGH ISHWAR | 2120.26% |
| ARARIA | Bihar | INDVINOD KU. ROY | INDNAND KISHORE MANDAL | 2230.24% |
| HUSSAINABAD | Bihar | BJPDASHRATH KUMAR SINGH | JDVIRENDER SINGH | 1630.24% |
| BAKHTIARPUR | Bihar | INCRAM JAIPAL SINGH YADAV | JDRAJENDER SINGH | 2390.19% |
| FATEHPUR | Bihar | JDRAM NARESH PRASAD | INCJITAN RAM MANJHI | 1820.15% |







