| Name of the Candidate | Party Name | Results |
| LAKSHMESHWAR ROY | Janata Dal (United) | 79971 |
| PRAMOD KUMAR PRIYEDARSHI | Bharatiya Janata Party | 56138 |
| MANOJ KUMAR 'BIHARI' | Shivsena | 14455 |
| RAMPARI DEVI | Communist Party of India (Marxist) | 5393 |
| DINESH PRASAD SAH | Independent | 4110 |
| SURENDRA PRASAD YADAV | Samajwadi Party | 3856 |
| BHUPINDER PRASAD YADAV | Independent | 3295 |
| SURENDRA PRASAD SUMAN | Independent | 2409 |
| POONAM GOIT | Jan Adhikar Party (Loktantrik) | 2187 |
| SHAKUNTALA | Bahujan Samaj Party | 1881 |
| PRABHAKAR PRASAD | Independent | 1460 |
| SHIV KUMAR PRASAD | Bhartiya Deshbhakt Party | 1327 |
| AMAN KUMAR SAMAJSEBI | Independent | 1217 |
| ABADUL GAFFAR | Independent | 838 |
| None of the Above | None of the Above | 4698 |
| AC No | Category | Poll Phases | Last Date of Nominations | Date of Polls | Result |
| 40 | GEN | Phase V | Oct 8th 2015 | Nov 5th 2015 | Nov 8th 2015 |
Laukaha assembly segment is a part of the Jhanjharpur Lok Sabha constituency is in Madhubani district of the state. According to the Delimitation Commission of India, 2008, the Laukaha assembly constituency covers Laukahi and Laukaha CD blocks, Siswar, Ekhatha, Kalapatti, Bathnaha, Sugapatti, Gohumabairia, Dhanouja and Saini gram panchayats of Phulparas community development block. A total of 2,85,441 eligible voters of whom 1,47,732 are men and 1,37,705 women.
One of the ten assembly segments located in the Madhubani district of Bihar, Laukaha assembly constituency is currently being represented by Satish Sah who retained the seat for the Janata Dal (United) by defeating his nearest Rashtriya Janata Dal (RJD) rival Mukhtar Ahmad by an impressive margin of 22763 votes in a byepoll held in 2011, necessitated due to the sudden death of the sitting MLA and the former Panchayati Raj Minister Hari Prasad Sah who had won the seat in 2000, 2005 and 2010. In the byelection, Satish Sah polled 64,425 votes, Mukhtar Ahmad secured 41,662 votes. All the other eleven candidates in the fray forfeited their security deposits.
Satish Sah is a son of Hari Prasad Sah who had won the seat in the last general assembly elections in 2010 by defeating the RJD candidate Chitaranjan Prasad Yadav by a margin of 17566 votes. In that election, while 47849 votes were polled in favour of Hari Prasad Sah, Chitaranjan Prasad Yadav received 30283 votes and was followed by Tajmmul Hussain who secured 15034 votes. Dev Naraian Mandal who entered the fray as a Congress candidate, came fourth with 15019 votes.
In 2005, while Hari Prasad Sah won the November election, Anis Ahmad of RJD emerged victorious in February assembly poll. Bihar went to the assembly polls twice in 2005 because the earlier one held in February threw hung assembly necessitating the holding of the second assembly polls in the month of November of the same year.
Lal Bihari Yadav of the Communist Party of India (CPI) was elected from Laukaha in 1980, 1990 and 1995. Former Haryana governor Dhaniklal Mandal had won the seat in 1972.
Laukaha is one of the six assembly constituencies that unite to create the parliamentary constituency of Jhanjharpur which is currently represented by Birendra Kumar Chaudhary of the BJP who won it by defeating his nearest rival and sitting MP and RJD candidate Mangani Lal Mandal in the last Lok Sabha general elections in 2014. Mangani Lal Mandal had won the seat in the previous Lok Sabha election on the ticket of the Janata Dal (United).
BJP has fielded Pramod Priyadarshi in Laukaha. JD(U) has nominated Lakshmeswar Rai to take on the challenge from the NDA candidate. BJP must be having a good smile to find the fragmented Left forces are forging electoral unity to make the upcoming electoral battle in the state a triangular affair. The saffron party may benefit from it as the united Left will only dent the support base of the grand alliance of RJD, JD(U) and Congress especially at the constituencites in Madhubani district.
Hari Prasad Sah is the sitting MLA of JD(U) representing this constituency in the assembly. Sah got 47,849 votes in the assembly elections of 2010 and defeated RJD's Chitranjan Prasad Yadav who bagged 30,283 votes. Laukaha assembly segment is a part of the Jhanjharpur Lok Sabha constituency and comes under Madhubani district.