| Constituency | Const. No. | Winner Candidate | Winner Party | Runner Candidate | Runner Party | Margin |
| Araria | 9 | TASLEEM UDDIN | Rashtriya Janata Dal | PRADEEP KUMAR SINGH | Bharatiya Janata Party | 146504 |
| Arrah | 32 | RAJ KUMAR SINGH | Bharatiya Janata Party | SRIBHAGWAN SINGH KUSHWAHA | Rashtriya Janata Dal | 135870 |
| Aurangabad | 37 | SUSHIL KUMAR SINGH | Bharatiya Janata Party | NIKHIL KUMAR | Indian National Congress | 66347 |
| Banka | 27 | JAI PRAKASH NARAYAN YADAV | Rashtriya Janata Dal | PUTUL KUMARI | Bharatiya Janata Party | 10144 |
| Begusarai | 24 | BHOLA SINGH | Bharatiya Janata Party | MD. TANVEER HASSAN | Rashtriya Janata Dal | 58335 |
| Bhagalpur | 26 | SHAILESH KUMAR URPH BULO MANDAL | Rashtriya Janata Dal | SYED SHAHNAWAZ HUSSAIN | Bharatiya Janata Party | 9485 |
| Buxar | 33 | ASHWINI KUMAR CHOUBEY | Bharatiya Janata Party | JAGADANAND SINGH | Rashtriya Janata Dal | 132338 |
| Darbhanga | 14 | KIRTI AZAD | Bharatiya Janata Party | MD. ALI ASHRAF FATMI | Rashtriya Janata Dal | 35043 |
| Gaya (SC) | 38 | HARI MANJHI | Bharatiya Janata Party | RAMJI MANJHI | Rashtriya Janata Dal | 115504 |
| Gopalganj (SC) | 17 | JANAK RAM | Bharatiya Janata Party | DR. JYOTI BHARTI | Indian National Congress | 286936 |
| Hajipur (SC) | 21 | RAMVILAS PASWAN | Lok Jan Shakti Party | SANJEEV PRASAD TONI | Indian National Congress | 225500 |
| Jahanabad | 36 | DR. ARUN KUMAR | Rashtriya Lok Samta Party | SURENDRA PRASAD YADAV | Rashtriya Janata Dal | 42340 |
| Jamui (SC) | 40 | CHIRAG KUMAR PASWAN | Lok Jan Shakti Party | SUDHANSU SHEKHAR BHASKAR | Rashtriya Janata Dal | 85947 |
| Jhanjharpur | 7 | BIRENDRA KUMAR CHAUDHARY | Bharatiya Janata Party | MANGANI LAL MANDAL | Rashtriya Janata Dal | 55408 |
| Karakat | 35 | UPENDRA KUSHWAHA | Rashtriya Lok Samta Party | KANTI SINGH | Rashtriya Janata Dal | 105241 |
| Katihar | 11 | TARIQ ANWAR | Nationalist Congress Party | NIKHIL KUMAR CHOUDHARY | Bharatiya Janata Party | 114740 |
| Khagaria | 25 | CHOUDHARY MAHBOOB ALI KAISER | Lok Jan Shakti Party | KRISHNA KUMARI YADAV | Rashtriya Janata Dal | 76003 |
| Kishanganj | 10 | MOHAMMAD ASRARUL HAQUE | Indian National Congress | DR DILIP KUMAR JAISWAL | Bharatiya Janata Party | 194612 |
| Madhepura | 13 | RAJESH RANJAN @ PAPPU YADAV | Rashtriya Janata Dal | SHARAD YADAV | Janata Dal (United) | 56209 |
| Madhubani | 6 | HUKM DEO NARAYAN YADAV | Bharatiya Janata Party | ABDUL BARI SIDDIQUI | Rashtriya Janata Dal | 20535 |
| Maharajganj | 19 | JANARDAN SINGH “SIGRIWAL” | Bharatiya Janata Party | PRABHU NATH SINGH | Rashtriya Janata Dal | 38415 |
| Munger | 28 | VEENA DEVI | Lok Jan Shakti Party | RAJIV RANJAN SINGH ALIAS LALAN SINGH | Janata Dal (United) | 109084 |
| Muzaffarpur | 15 | AJAY NISHAD | Bharatiya Janata Party | AKHILESH PD SINGH | Indian National Congress | 222422 |
| Nalanda | 29 | KAUSHLENDRA KUMAR | Janata Dal (United) | SATYA NAND SHARMA | Lok Jan Shakti Party | 9627 |
| Nawada | 39 | GIRIRAJ SINGH | Bharatiya Janata Party | RAJ BALLABH PRASAD | Rashtriya Janata Dal | 140157 |
| Paschim Champaran | 2 | DR. SANJAY JAISWAL | Bharatiya Janata Party | PRAKASH JHA | Janata Dal (United) | 110254 |
| Pataliputra | 31 | RAM KRIPAL YADAV | Bharatiya Janata Party | MISHA BHARTI | Rashtriya Janata Dal | 40322 |
| Patna Sahib | 30 | SHATRUGHANA SINHA | Bharatiya Janata Party | KUNAL SINGH | Indian National Congress | 265805 |
| Purnia | 12 | SANTOSH KUMAR | Janata Dal (United) | UDAY SINGH ALIAS PAPPU SINGH | Bharatiya Janata Party | 116669 |
| Purvi Champaran | 3 | RADHA MOHAN SINGH | Bharatiya Janata Party | BINOD KUMAR SRIVASTAVA | Rashtriya Janata Dal | 192163 |
| Samastipur (SC) | 23 | RAM CHANDRA PASWAN | Lok Jan Shakti Party | DR. ASHOK KUMAR | Indian National Congress | 6872 |
| Saran | 20 | RAJIV PRATAP RUDY | Bharatiya Janata Party | RABRI DEVI | Rashtriya Janata Dal | 40948 |
| Sasaram (SC) | 34 | CHHEDI PASWAN | Bharatiya Janata Party | MEIRA KUMAR | Indian National Congress | 63327 |
| Sheohar | 4 | RAMA DEVI | Bharatiya Janata Party | MD ANWARUL HAQUE | Rashtriya Janata Dal | 136239 |
| Sitamarhi | 5 | RAM KUMAR SHARMA | Rashtriya Lok Samta Party | SITARAM YADAV | Rashtriya Janata Dal | 147965 |
| Siwan | 18 | OM PRAKASH YADAV | Bharatiya Janata Party | HENA SHAHAB | Rashtriya Janata Dal | 113847 |
| Supaul | 8 | RANJEET RANJAN | Indian National Congress | DILESHWAR KAMAIT | Janata Dal (United) | 59672 |
| Ujiarpur | 22 | NITYANAND RAI | Bharatiya Janata Party | ALOK KUMAR MEHTA | Rashtriya Janata Dal | 49440 |
| Vaishali | 16 | RAMA KISHORE SINGH | Lok Jan Shakti Party | RAGHUVANSH PRASAD SINGH | Rashtriya Janata Dal | 95729 |
| Valmiki Nagar | 1 | SATISH CHANDRA DUBEY | Bharatiya Janata Party | PURNMASI RAM | Indian National Congress | 117793 |
