BJP won Kodarma, defeating second-placed RJD by 1797 votes. It had also won Kodarma in the previous election, and retained the seat with a narrow margin.
Kodarma is in the North Chotanagpur region of Jharkhand. It is a predominantly rural constituency.
Dr. Neera Yadav of the BJP received 31.3% of the vote, compared to 30.5% of the RJD's Amitabh Kumar. BJP's voteshare fell by 12.2% from 2014, while RJD's voteshare fell by 6.1%.
The constituency saw a 3-cornered contest, with Bharatiya Janata Party, Rashtriya Janata Dal, AJSU Party all getting a voteshare of 10% of more.
| Party | Name | Votes | Vote (%) | Party Voteshare Change |
|---|---|---|---|---|
| Bharatiya Janata Party | Dr. Neera Yadav | 63675 | 31.3% | -12.2% |
| Rashtriya Janata Dal | Amitabh Kumar | 61878 | 30.5% | -6.1% |
| AJSU Party | Shalini Gupta | 45014 | 22.2% | +22.2% |
| Jharkhand Vikas Morcha (Prajatantrik) | Ramesh Harshdhar | 9557 | 4.7% | -0.8% |
| Independent | Yogendra Kumar Pandit | 4169 | 2.1% | - |
| Bahujan Samaj Party | Prakash Ambedkar | 3627 | 1.8% | +0.3% |
| Independent | Chandradev Yadav | 2449 | 1.2% | - |
| Independent | Bhuneshwar Giri | 2384 | 1.2% | - |
| Independent | Raj Kumar Pd. Yadav | 1745 | 0.9% | - |
| None of the Above | Nota | 1536 | 0.8% | +0.8% |
| Independent | Dhiraj Kumar | 1346 | 0.7% | - |
| Independent | Deepak Yadav | 1318 | 0.6% | - |
| Lok Jan Shakti Party | Rajiv Kumar Pandey | 938 | 0.5% | +0.5% |
| Independent | Gulam Mustafa | 861 | 0.4% | - |
| Moolniwasi Samaj Party | Mahendr Prasad | 771 | 0.4% | +0.4% |
| Samajwadi Party | Subhash Mistry | 676 | 0.3% | -1.7% |
| Aam Aadmi Party | Santosh Kumar Singh | 620 | 0.3% | +0.3% |
| Pragatishil Samajwadi Party (Lohia) | Md. Mubark | 557 | 0.3% | +0.3% |