2nd Electoral Unit of Republika Srpska
The second electoral unit of Republika Srpska is a parliamentary constituency used to elect members to the House of Representatives of Bosnia and Herzegovina since 2000. It consists of the municipalities of Derventa,
Brod,
Vukosavlje,
Modriča
Doboj,
Petrovo,
Teslic,
Ugljevik,
Šamac,
Donji Žabar,
Pelagićevo,
Bijeljina and
Lopare as well as the Brcko District.
Demographics
| Ethnicity | Population | % |
| Bosniaks | 84,509 | 19.2 |
| Croats | 34,797 | 7.9 |
| Serbs | 310,903 | 70.7 |
| Did Not declare | 2,871 | 0.7 |
| Others | 5,675 | 1.3 |
| Unknown | 706 | 0.2 |
| Total | 439,461 |