Bihar Election Data and Constituency Directory
- Capital:Patna
- Chief Minister:Nitish Kumar (JDU)
- Registered Electorate:7.79 crore
- Assembly Seats:243
- Parliamentary Seats:40 Election 2025
Bihar has 243 Assembly constituencies and 40 Parliamentary constituencies, with a registered electorate of approximately 7.79 crore. Bihar is currently governed by the NDA alliance, led by Chief Minister Nitish Kumar. Below you'll find the complete list of Vidhan Sabha and Lok Sabha constituencies in Bihar, along with caste demographics, historical election results since 2008 and booth-level insights for each seat.
All Constituencies in Bihar
Every Vidhan Sabha and Lok Sabha seat in Bihar. Click any constituency for caste demographics, election history and booth-level insights.
Political Snapshot
Current Assembly composition in Bihar.
Past Election Results in Bihar (2008–2026)
Bihar has seen four Assembly elections since 2008 (2010, 2015, 2020) and four Lok Sabha cycles (2009, 2014, 2019, 2024). NDA has held power in three of the last four Assembly cycles, with the 2015 mandate delivered to the Mahagathbandhan.
| # | Party / Alliance | Seats | Vote Share | Result |
|---|---|---|---|---|
| 1 | NDA | 30 / 40 | 47% | Winner |
| 2 | INDIA | 9 / 40 | 38.8% | Runner-up |
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Bihar Election Analysis and Insights
AnalysisBihar 2025: Caste arithmetic and what has shifted since 2020
A booth-level look at how EBC and Mahadalit consolidation has moved across 12 marginal Assembly segments since the last election.
DataBihar's 40 Lok Sabha seats: margin distribution 2024 vs 2019
How the NDA vote consolidated across Mithilanchal and Seemanchal in a single cycle.
Booth IntelligenceReading the swing booth: Patna's 6 Assembly segments
Which polling stations decide the Patna Sahib and Pataliputra outcomes and why.
Common questions about Bihar
Contesting a seat in Bihar?
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