partisanship
//ˈpɑːr.tɪ.zən.ʃɪp//
Noun
partisanshipSingular
partisanshipsPlural
1
Strong, often uncritical support for a particular political party, cause, or person, especially when accompanied by bias against opposing views.
The debate was ruined by excessive partisanship on both sides.
2
The state or quality of being partisan; prejudice in favor of one side in a dispute or conflict.
The journalist was criticized for showing partisanship in her reporting.