The 2019 Lok Sabha (Parliament) election in Bihar was held to elect Members of Parliament (MPs) from 40 parliamentary constituencies in the state. Bharatiya Janata Party emerged as the leading party, winning 17 seats. Janata Dal (United) came second with 16 seats.
A total of 70,293,144 electors were registered to vote across the state. Of these, 40,811,991 votes were polled, resulting in an overall voter turnout of 58.1%. The average victory margin across all constituencies was 220,483 votes, with the closest contest decided by just 1,751 votes and the largest margin reaching 454,940 votes.
A total of 4 political parties won at least one seat in this election. India's Lok Sabha elections use the First-Past-The-Post (FPTP) system, where the candidate with the most votes in each constituency wins the seat. The party or coalition winning a majority of Lok Sabha seats forms the central government and appoints the Prime Minister.
Seat data is not available for this selection.
Seat breakdown: Bharatiya Janata Party (17), Janata Dal (United) (16), Lok Jan Shakti Party (6), Indian National Congress (1).
Click on any constituency name to view the full candidate-wise breakdown with individual vote counts, vote share percentages, and party affiliations.
| Sno. | Constituency | Type | State | Winner | Party | Electors | Votes | Turnout | Margin | Margin% | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 42-Valmiki Nagar | GEN | Bihar | Baidyanath Prasad Mahto | Janata Dal (United) | 1641701 | 1032090 | 65.00% | 354616 | 34.40% | 2019 |
| 2 | 43-Paschim Champaran | GEN | Bihar | Dr. Sanjay Jaiswal | Bharatiya Janata Party | 1606271 | 1012936 | 65.90% | 293906 | 29.00% | 2019 |
| 3 | 44-Purvi Champaran | GEN | Bihar | Radha Mohan Singh | Bharatiya Janata Party | 1631187 | 999400 | 62.70% | 293648 | 29.40% | 2019 |
| 4 | 45-Sheohar | GEN | Bihar | Rama Devi | Bharatiya Janata Party | 1660635 | 1004559 | 60.90% | 340360 | 33.90% | 2019 |
| 5 | 46-Sitamarhi | GEN | Bihar | Sunil Kumar Pintu | Janata Dal (United) | 1738001 | 1038849 | 60.40% | 250539 | 24.10% | 2019 |
| 6 | 47-Madhubani | GEN | Bihar | Ashok Kumar Yadav | Bharatiya Janata Party | 1780846 | 963708 | 54.40% | 454940 | 47.20% | 2019 |
| 7 | 48-Jhanjharpur | GEN | Bihar | Ramprit Mandal | Janata Dal (United) | 1835089 | 1060562 | 58.30% | 322951 | 30.50% | 2019 |
| 8 | 49-Supaul | GEN | Bihar | Dileshwar Kamait | Janata Dal (United) | 1680576 | 1110805 | 66.70% | 266853 | 24.00% | 2019 |
| 9 | 50-Araria | GEN | Bihar | Pradeep Kumar Singh | Bharatiya Janata Party | 1469717 | 1169630 | 81.00% | 137241 | 11.70% | 2019 |
| 10 | 51-Kishanganj | GEN | Bihar | Dr. Mohammad Jawed | Indian National Congress | 1652940 | 1101603 | 67.80% | 34466 | 3.10% | 2019 |
| 11 | 52-Katihar | GEN | Bihar | Dulal Chandra Goswami | Janata Dal (United) | 1645713 | 1117734 | 69.20% | 57203 | 5.10% | 2019 |
| 12 | 53-Purnia | GEN | Bihar | Santosh Kumar | Janata Dal (United) | 2055471 | 1153940 | 57.00% | 263461 | 22.80% | 2019 |
| 13 | 54-Madhepura | GEN | Bihar | Dinesh Chandra Yadav | Janata Dal (United) | 1874003 | 1147274 | 63.30% | 301527 | 26.30% | 2019 |
| 14 | 55-Darbhanga | GEN | Bihar | Gopal Jee Thakur | Bharatiya Janata Party | 1644671 | 964996 | 59.90% | 267979 | 27.80% | 2019 |
| 15 | 56-Muzaffarpur | GEN | Bihar | Ajay Nishad | Bharatiya Janata Party | 1710868 | 1058086 | 62.40% | 409988 | 38.70% | 2019 |
| 16 | 57-Vaishali | GEN | Bihar | Veena Devi (W/o Dinesh Prasad Singh) | Lok Jan Shakti Party | 1721658 | 1074730 | 63.00% | 234584 | 21.80% | 2019 |
| 17 | 58-Gopalganj | SC | Bihar | Dr. Alok Kumar Suman | Janata Dal (United) | 1832200 | 1024876 | 58.80% | 286434 | 27.90% | 2019 |
| 18 | 59-Siwan | GEN | Bihar | Kavita Singh | Janata Dal (United) | 1780670 | 984810 | 55.80% | 116958 | 11.90% | 2019 |
| 19 | 60-Maharajganj | GEN | Bihar | Janardan Singh 'sigriwal" | Bharatiya Janata Party | 1793406 | 972703 | 55.50% | 230772 | 23.70% | 2019 |
| 20 | 61-Saran | GEN | Bihar | Rajiv Pratap Rudy | Bharatiya Janata Party | 1655736 | 941656 | 58.60% | 138429 | 14.70% | 2019 |
| 21 | 62-Hajipur | SC | Bihar | Pashu Pati Kumar Paras | Lok Jan Shakti Party | 1810137 | 1006817 | 57.00% | 205449 | 20.40% | 2019 |
| 22 | 63-Ujiarpur | GEN | Bihar | Nityanand Rai | Bharatiya Janata Party | 1588209 | 969284 | 61.90% | 277278 | 28.60% | 2019 |
| 23 | 64-Samastipur | SC | Bihar | Ramchandra Paswan | Lok Jan Shakti Party | 1655671 | 1019025 | 63.70% | 251643 | 24.70% | 2019 |
| 24 | 65-Begusarai | GEN | Bihar | Giriraj Singh | Bharatiya Janata Party | 1942769 | 1225594 | 64.10% | 422217 | 34.40% | 2019 |
| 25 | 66-Khagaria | GEN | Bihar | Choudhary Mehboob Ali Kaiser | Lok Jan Shakti Party | 1653928 | 966813 | 58.90% | 248570 | 25.70% | 2019 |
| 26 | 67-Bhagalpur | GEN | Bihar | Ajay Kumar Mandal | Janata Dal (United) | 1811980 | 1042518 | 59.30% | 277630 | 26.60% | 2019 |
| 27 | 68-Banka | GEN | Bihar | Giridhari Yadav | Janata Dal (United) | 1687940 | 995806 | 59.40% | 200532 | 20.10% | 2019 |
| 28 | 69-Munger | GEN | Bihar | Rajiv Ranjan Singh Alias Lalan Singh | Janata Dal (United) | 1870993 | 1036268 | 55.90% | 167937 | 16.20% | 2019 |
| 29 | 70-Nalanda | GEN | Bihar | Kaushlendra Kumar | Janata Dal (United) | 1809760 | 1031286 | 57.50% | 256137 | 24.80% | 2019 |
| 30 | 71-Patna Sahib | GEN | Bihar | Ravi Shankar Prasad | Bharatiya Janata Party | 2136800 | 982285 | 46.20% | 284657 | 29.00% | 2019 |
| 31 | 72-Pataliputra | GEN | Bihar | Ram Kripal Yadav | Bharatiya Janata Party | 1909112 | 1077749 | 56.80% | 39321 | 3.60% | 2019 |
| 32 | 73-Arrah | GEN | Bihar | R. K. Singh | Bharatiya Janata Party | 2055316 | 1080684 | 53.60% | 147285 | 13.60% | 2019 |
| 33 | 74-Buxar | GEN | Bihar | Ashwini Kumar Choubey | Bharatiya Janata Party | 1806004 | 986861 | 55.60% | 117609 | 11.90% | 2019 |
| 34 | 75-Sasaram | SC | Bihar | Chhedi Paswan | Bharatiya Janata Party | 1771935 | 974749 | 56.10% | 165745 | 17.00% | 2019 |
| 35 | 76-Karakat | GEN | Bihar | Mahabali Singh | Janata Dal (United) | 1759358 | 868798 | 50.60% | 84542 | 9.70% | 2019 |
| 36 | 77-Jahanabad | GEN | Bihar | Chandeshwar Prasad | Janata Dal (United) | 1573907 | 822065 | 54.00% | 1751 | 0.20% | 2019 |
| 37 | 78-Aurangabad | GEN | Bihar | Sushil Kumar Singh | Bharatiya Janata Party | 1737821 | 941595 | 55.50% | 72607 | 7.70% | 2019 |
| 38 | 79-Gaya | SC | Bihar | Vijay Kumar | Janata Dal (United) | 1698772 | 957248 | 58.10% | 152426 | 15.90% | 2019 |
| 39 | 80-Nawada | GEN | Bihar | Chandan Singh | Lok Jan Shakti Party | 1892017 | 942462 | 51.70% | 148072 | 15.70% | 2019 |
| 40 | 81-Jamui | SC | Bihar | Chirag Kumar Paswan | Lok Jan Shakti Party | 1709356 | 949137 | 57.80% | 241049 | 25.40% | 2019 |
Data-driven analysis of the 2019 Bihar Lok Sabha election results, covering competitiveness, candidate performance, and voter behaviour.
The victory margin is the difference in votes between the winning candidate and the runner-up. A constituency with a margin under 5,000 votes is considered closely fought. The average margin in Bihar 2019 was 220,483 votes.
The 10 parliamentary constituencies decided by the narrowest margins.
| Constituency | Winner | Party | Margin |
|---|
Candidates receiving less than one-sixth (16.67%) of valid votes forfeit their security deposit. A high forfeiture rate indicates a party fielded candidates in constituencies with little voter support.
NOTA (None of the Above) allows voters to reject all candidates. When NOTA votes exceed the victory margin, it signals significant voter dissatisfaction.
| Constituency | NOTA Votes | Win Margin | NOTA > Margin? |
|---|
The Lok Sabha (House of the People) is the lower house of India's Parliament. Members of Parliament (MPs) are directly elected by voters in their respective parliamentary constituencies through universal adult suffrage.
Bihar is divided into 40 parliamentary constituencies. The constituencies are categorized as: GEN (34 seats), SC (6 seats). SC and ST reserved constituencies ensure representation for historically marginalized communities.
India follows the First-Past-The-Post (FPTP) electoral system. The candidate who receives the highest number of votes wins the seat. Elections are conducted by the Election Commission of India (ECI) using Electronic Voting Machines (EVMs) and Voter Verifiable Paper Audit Trail (VVPAT).