| Delmeria Sikumbang | Partai NasDem | 2019 |
| Gus Irawan Pasaribu | Partai Gerakan Indonesia Raya | 2014 |
| Iskan Qolba Lubis | Partai Keadilan Sejahtera | 2014 |
| Jhoni Allen Marbun | Partai Demokrat (Indonesia) | 2019 |
| Lamhot Sinaga | Partai Golongan Karya | 2019 |
| Martin Manurung | Partai NasDem | 2019 |
| Marwan Dasopang | Partai Kebangkitan Bangsa | 2014 |
| Rambe Kamarul Zaman | Partai Golongan Karya | 2014 |
| Rooslynda Marpaung | Partai Demokrat (Indonesia) | 2014 |
| Rufinus Hotmaulana Hutauruk | Partai Hati Nurani Rakyat | 2014 |
| Sahat Silaban | Partai NasDem | 2014 |
| Saleh P. Daulay | Partai Amanat Nasional | 2014 |
| Sihar Sitorus | Partai Demokrasi Indonesia Perjuangan | 2019 |
| Suasana Dachi | Partai Gerakan Indonesia Raya | 2014 |
| Trimedya Panjaitan | Partai Demokrasi Indonesia Perjuangan | 2014 |
| Trinovi Khairani | — | 2024 |