Incumbent Prime Minister Ranil Wickremesinghe has topped the UNP Colombo district list with 500,566votes. UPFA former parliamentarian Wimal Weerawansa, who obtained 313,801 votes, has topped the UPFA list.
Colombo District list
| UNP | |
| Ranil Wickremesinghe | 500,566 |
| Sujeewa Senasinghe | 117,049 |
| Harsha de Silva | 114,148 |
| Ravi Karunanayake | 111,394 |
| Patali Champika Ranawaka | 100,444 |
| S.M. Marikkar | 92,526 |
| Mujibur Rahman | 83,884 |
| Eran Wickramaratne | 82,738 |
| Wijedasa Rajapaksa | 81,758 |
| Hirunika Premachandra | 70,584 |
| M. Ganesan | 69,064 |
| UPFA | |
| Wimal Weerawansa | 313,801 |
| Udaya Gammanpila | 198,818 |
| Susil Premajayanth | 174,075 |
| Dinesh Gunawardena | 124,451 |
| Bandula Gunawardane | 96,057 |
| Mohan Lal Grero | 65,703 |
| Gamini Lokuge | 58,527 |
| JVP | |
| Anura Kumara Dissanayaka | 65,966 |
Gampaha District list
| UNP | ||
| 01 | Ranjan Ramanayake | 216,463 |
| 02 | Arjuna Ranatunga | 165,890 |
| 03 | Ruwan Wijewardene | 157,932 |
| 04 | Harshana Supun Rajakaruna | 122,455 |
| 05 | Ajith mannapperuma | 113,889 |
| 06 | John Emmanuel Amaratunga | 83,070 |
| 07 | Dr. Kavinda Jayawardena | 81,383 |
| 08 | Chathura Senarathne | 71,243 |
| 09 | Earl Gunasekara | 65,874 |
| UPFA | ||
| 01 | Prasanna Ranatunga | 384,448 |
| 02 | Prasanna Ranaweera | 112,395 |
| 03 | Nimal Lanza | 94,375 |
| 04 | Sisira Jayakody | 90,749 |
| 05 | Indika Anuruddha | 78,109 |
| 06 | Sudarshani Fernandopulle | 73,553 |
| 07 | Dulip Wijesekara | 58,936 |
| 08 | Lasantha Alagiyawanna | 57,450 |
| JVP | ||
| 01 | Vijitha Herath | 55,299 |
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