The 2009 Lok Sabha (Parliament) election in Bihar was held to elect Members of Parliament (MPs) from 40 parliamentary constituencies in the state. Janata Dal (United) emerged as the leading party, winning 19 seats. Bharatiya Janta Party came second with 12 seats.
A total of 54,608,232 electors were registered to vote across the state. Of these, 24,890,432 votes were polled, resulting in an overall voter turnout of 45.6%. The average victory margin across all constituencies was 74,432 votes, with the closest contest decided by just 2,238 votes and the largest margin reaching 189,361 votes.
A total of 6 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: Janata Dal (United) (19), Bharatiya Janta Party (12), Rashtriya Janata Dal (4), Independent (2), Indian National Congress (2) and 1 other parties.
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) | 1275653 | 598456 | 46.90% | 183675 | 30.70% | 2009 |
| 2 | 43-Paschim Champaran | GEN | Bihar | Dr. Sanjay Jaiswal | Bharatiya Janta Party | 1220868 | 515490 | 42.20% | 47343 | 9.20% | 2009 |
| 3 | 44-Purvi Champaran | GEN | Bihar | Radha Mohan Singh | Bharatiya Janta Party | 1187264 | 482094 | 40.60% | 79290 | 16.40% | 2009 |
| 4 | 45-Sheohar | GEN | Bihar | Rama Devi | Bharatiya Janta Party | 1269056 | 573012 | 45.20% | 125684 | 21.90% | 2009 |
| 5 | 46-Sitamarhi | GEN | Bihar | Arjun Roy | Janata Dal (United) | 1355817 | 576772 | 42.50% | 110566 | 19.20% | 2009 |
| 6 | 47-Madhubani | GEN | Bihar | Hukmadeo Narayan Yadav | Bharatiya Janta Party | 1397256 | 556572 | 39.80% | 9927 | 1.80% | 2009 |
| 7 | 48-Jhanjharpur | GEN | Bihar | Mangani Lal Mandal | Janata Dal (United) | 1418977 | 607835 | 42.80% | 72709 | 12.00% | 2009 |
| 8 | 49-Supaul | GEN | Bihar | Vishwa Mohan Kumar | Janata Dal (United) | 1279549 | 697682 | 54.50% | 166075 | 23.80% | 2009 |
| 9 | 50-Araria | GEN | Bihar | Pradeep Kumar Singh | Bharatiya Janta Party | 1311225 | 730459 | 55.70% | 22502 | 3.10% | 2009 |
| 10 | 51-Kishanganj | GEN | Bihar | Mohammad Asrarul Haque | Indian National Congress | 1186369 | 626914 | 52.80% | 80269 | 12.80% | 2009 |
| 11 | 52-Katihar | GEN | Bihar | Nikhil Kumar Choudhary | Bharatiya Janta Party | 1272769 | 724942 | 57.00% | 14015 | 1.90% | 2009 |
| 12 | 53-Purnia | GEN | Bihar | Uday Singh Alias Pappu Singh | Bharatiya Janta Party | 1305396 | 704866 | 54.00% | 186227 | 26.40% | 2009 |
| 13 | 54-Madhepura | GEN | Bihar | Sharad Yadav | Janata Dal (United) | 1508361 | 756468 | 50.20% | 177621 | 23.50% | 2009 |
| 14 | 55-Darbhanga | GEN | Bihar | Kirti Azad | Bharatiya Janta Party | 1307067 | 545726 | 41.80% | 46453 | 8.50% | 2009 |
| 15 | 56-Muzaffarpur | GEN | Bihar | Captain Jai Narayan Prasad Nishad | Janata Dal (United) | 1339949 | 621870 | 46.40% | 47809 | 7.70% | 2009 |
| 16 | 57-Vaishali | GEN | Bihar | Raghuvansh Prasad Singh | Rashtriya Janata Dal | 1278891 | 624863 | 48.90% | 22308 | 3.60% | 2009 |
| 17 | 58-Gopalganj | SC | Bihar | Purnmasi Ram | Janata Dal (United) | 1349072 | 504611 | 37.40% | 42472 | 8.40% | 2009 |
| 18 | 59-Siwan | GEN | Bihar | Om Prakash Yadav | Independent | 1282480 | 642234 | 50.10% | 63430 | 9.90% | 2009 |
| 19 | 60-Maharajganj | GEN | Bihar | Uma Shanaker Singh | Rashtriya Janata Dal | 1312219 | 599531 | 45.70% | 2797 | 0.50% | 2009 |
| 20 | 61-Saran | GEN | Bihar | Lalu Prasad | Rashtriya Janata Dal | 1268338 | 580830 | 45.80% | 51815 | 8.90% | 2009 |
| 21 | 62-Hajipur | SC | Bihar | Ram Sundar Das | Janata Dal (United) | 1327075 | 555110 | 41.80% | 37954 | 6.80% | 2009 |
| 22 | 63-Ujiarpur | GEN | Bihar | Aswamedh Devi | Janata Dal (United) | 1229327 | 564247 | 45.90% | 25312 | 4.50% | 2009 |
| 23 | 64-Samastipur | SC | Bihar | Maheshwar Hazari | Janata Dal (United) | 1312948 | 584752 | 44.50% | 104376 | 17.80% | 2009 |
| 24 | 65-Begusarai | GEN | Bihar | Munde Gopinathrao Pandurang | Bharatiya Janta Party | 1637239 | 1074052 | 65.60% | 140952 | 13.10% | 2009 |
| 25 | 66-Khagaria | GEN | Bihar | Dinesh Chandra Yadav | Janata Dal (United) | 1342970 | 624966 | 46.50% | 138755 | 22.20% | 2009 |
| 26 | 67-Bhagalpur | SC | Bihar | Arjun Charan Sethi | Biju Janata Dal | 1372356 | 929526 | 67.70% | 54938 | 5.90% | 2009 |
| 27 | 68-Banka | GEN | Bihar | Digvijay Singh | Independent | 1338025 | 652097 | 48.70% | 28716 | 4.40% | 2009 |
| 28 | 69-Munger | GEN | Bihar | Rajiv Ranjan Singh Alias Lalan Singh | Janata Dal (United) | 1564604 | 651035 | 41.60% | 189361 | 29.10% | 2009 |
| 29 | 70-Nalanda | GEN | Bihar | Kaushalendra Kumar | Janata Dal (United) | 1719503 | 568233 | 33.10% | 152677 | 26.90% | 2009 |
| 30 | 71-Patna Sahib | GEN | Bihar | Shatrughan Sinha | Bharatiya Janta Party | 1641976 | 552538 | 33.70% | 166770 | 30.20% | 2009 |
| 31 | 72-Pataliputra | GEN | Bihar | Ranjan Prasad Yadav | Janata Dal (United) | 1526241 | 628364 | 41.20% | 23541 | 3.70% | 2009 |
| 32 | 73-Arrah | GEN | Bihar | Meena Singh | Janata Dal (United) | 1555122 | 556364 | 35.80% | 74720 | 13.40% | 2009 |
| 33 | 74-Buxar | GEN | Bihar | Jagada Nand Singh | Rashtriya Janata Dal | 1340892 | 623629 | 46.50% | 2238 | 0.40% | 2009 |
| 34 | 75-Sasaram | SC | Bihar | Meira Kumar | Indian National Congress | 1402789 | 599031 | 42.70% | 42954 | 7.20% | 2009 |
| 35 | 76-Karakat | GEN | Bihar | Mahabali Singh | Janata Dal (United) | 1386634 | 577454 | 41.60% | 20483 | 3.50% | 2009 |
| 36 | 77-Jahanabad | GEN | Bihar | Jagdish Sharma | Janata Dal (United) | 1276912 | 599175 | 46.90% | 21327 | 3.60% | 2009 |
| 37 | 78-Aurangabad | GEN | Bihar | Sushil Kumar Singh | Janata Dal (United) | 1376323 | 598332 | 43.50% | 72058 | 12.00% | 2009 |
| 38 | 79-Gaya | SC | Bihar | Hari Manjhi | Bharatiya Janta Party | 1329192 | 563429 | 42.40% | 62453 | 11.10% | 2009 |
| 39 | 80-Nawada | GEN | Bihar | Bhola Singh | Bharatiya Janta Party | 1397512 | 581583 | 41.60% | 34917 | 6.00% | 2009 |
| 40 | 81-Jamui | SC | Bihar | Bhudeo Choudhary | Janata Dal (United) | 1404016 | 535288 | 38.10% | 29797 | 5.60% | 2009 |
Data-driven analysis of the 2009 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 2009 was 74,432 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 (33 seats), SC (7 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).