| Name of the Candidate | Party Name | Results |
| POONAM DEVI YADAV | Janata Dal (United) | Won 64767 |
| RAJESH KUMAR URF ROHIT KUMAR | Hindustani Awam Morcha (Secular) | 39202 |
| MANOHAR KUMAR YADAV | Jan Adhikar Party (Loktantrik) | 12791 |
| MUKESH KUMAR | Independent | 3701 |
| SANJAY KUMAR | Communist Party of India (Marxist) | 3508 |
| GOPAL KRISHNA KUMAR CHANDAN | Independent | 3115 |
| MANOJ KUMAR | Bahujan Mukti Party | 2155 |
| BIRENDRA KUMAR | Independent | 1348 |
| BABITA DEVI | Independent | 1124 |
| BIRENDRA YADAV | Independent | 917 |
| SHIV NARAYAN SINGH | Independent | 787 |
| GANESH THAKUR | Garib Janta Dal (Secular) | 753 |
| UMESH THAKUR | Naya Daur Party | 646 |
| None of the Above | None of the Above | 4687 |
| AC No | Category | Poll Phases | Last Date of Nominations | Date of Polls | Result |
| 149 | GEN | Phase I | Sep 23rd 2015 | Oct 12th 2015 | Nov 8th 2015 |
Khagaria legislative assembly segment is part of Khagaria Lok Sabha constituency. It is composed of the following: Khagaria municipality; Mansi community development block; Bhadas Dakshini, Bhadas Uttari,Kasimpur, Mathurapur, Bachhouta, Sanhouli, Ranko, Sansarpur, Gourashakti, Marar Dakshni, Marar Uttari, Rasounk, Uttar Marar, Rahimpur Uttari, Rahimpur Madhya, Rahimpur Dakshin, Labhganva, Kothia gram panchayats of Khagaria CD Block.
Khagaria, one of the four assembly constituencies located in the district of the same name in the state of Bihar, is currently held by Poonam Devi Yadav of the Janata Dal (United) who retained the seat by defeating her nearest Lok Janashakti Party (LJP) rival Sushila Devi by a good margin of 26853 votes in the last general assembly polls to the state in 2010.
In that election, Poonam Devi Yadav polled 48841 votes, the LJP candidate who had the backing of the Rashtirya Janata Dal (RJD), secured 21988 votes and was followed Independent candidate Dharmendra Kumar who got 15237 votes. The Congress candidate Priti Verma was relegated to the fifth place with just 4553 votes. The Congress, which went to the polls alone, managed to win only four seats.
Poonam Devi Yadav, who had won the previous two elections in 2005 held in the months of February and November on the tickets of LJP and JD (U), is the wife of former Khagaria MLA Ranveer Yadav who had won the seat in 1990 as an independent by defeating his nearest rival Satyadev Singh of Congress. However, in the next assembly elections in 1995, Ranveer was defeated by Chandramukhi Devi of BJP who lost the next poll to Yogendra Singh of the CPM. In February 2005 assembly elections, Poonam Yadav, then an LJP candidate, won the seat by trouncing Chandramukhi Devi of the BJP.
While Sushila Devi is the daughter-in-law of former Khagaria MLA Ramsharan Yadav, who was elected in 1972, 1977 and 1980, Ranveer is the son of Haribalabh Yadav, a brother of Ramsharan Yadav. Ranveer, known for his muscle power, was charged of attempt to murder his cousin Bharat, husband of Sushila Devi. He was also convicted of carrying Lakshmipur-Taufir Diara carnage of 1985 in which nine persons lost their lives.
Khagaria is one of the six assembly constituencies that combine to form the parliamentary constituency of the same name which is currently held by Mehboob Ali Kaiser who had defeated Krishna Yadav of the Lalu Prasad’s Rahstriya Janata Dal (RJD) by 76003 votes in the last general Lok Sabha elections in 2014 which paved the way of the formation of the BJP led National Democratic Alliance (NDA) government at the centre.
Other five assembly segments that are part of Khagaria parliamentary constituency are Beldaur, Simri Bakhtiarpur, Hasanpur, Alauli and Parbatta.
It was peaceful polling in the first phase of Bihar assembly election in which voters in 49 assembly constituencies exercised their franchise on Oct 12. The voter turnout recorded until 4 pm in Khagaria 61.32%,.
The proposed rail-cum-road bridge over the Ganga has turned out to be a poll issue in Khagaria. It’s been almost 13 years since the construction began on this bridge. In 2002, the then PM Atal Behari Vajpayee had laid the foundation of the 3.90 km bridge to connect Munger with Khagaria, as part of a major development initiative. The project cost has now gone up to Rs 2,500 crore from the original estimate of Rs 930 crore, but the bridge remains incomplete. Once completed, the bridge will serve as the main link connecting north and south-east Bihar regions via Munger and Khagaria. In the absence of any reliable communication link, people of Khagaria have to rely on the heavily congested Vikramshila setu near Bhagalpur to cross over.