▁the ▁national ▁level , ▁de ▁fact o ▁non part isan ▁systems ▁mostly ▁represent ▁very ▁small ▁populations , ▁such ▁as ▁in ▁Ni ue , ▁Tu valu , ▁and ▁Pal au . ▁Several ▁Pers ian ▁G ulf ▁states ▁are ▁de ▁j ure ▁non part isan , ▁including ▁O man ▁and ▁K uw ait ; ▁the ▁legisl atures ▁in ▁these ▁govern ments ▁typically ▁have ▁advis ory ▁capacity ▁only , ▁as ▁they ▁may ▁comment ▁on ▁laws ▁proposed ▁by ▁the ▁executive ▁branch ▁but ▁are ▁unable ▁to ▁create ▁laws ▁themselves . ▁De ▁j ure ▁non part isan ▁national ▁govern ments ▁sometimes ▁res emble ▁one - party ▁states , ▁but ▁govern ments ▁of ▁the ▁latter ▁type ▁explicitly ▁recognize ▁a ▁single ▁political ▁party ▁that ▁all ▁officials ▁are ▁required ▁to ▁be ▁a ▁member ▁of . ▁ ▁Unless ▁there ▁are ▁legal ▁restrictions ▁on ▁political ▁parties , ▁fa ctions ▁within ▁non part isan ▁govern ments ▁may ▁evol ve ▁into ▁political ▁parties . ▁The ▁United ▁States ▁of ▁America ▁initially ▁did ▁not ▁have ▁enf ranch ised ▁political ▁parties , ▁but ▁these ▁evol ved ▁soon ▁after ▁independence . ▁ ▁Com parison ▁with ▁other ▁political ▁systems ▁A ▁non part isan ▁system ▁diff ers ▁from ▁a ▁one - party ▁system ▁in ▁that ▁the ▁gover ning ▁fa ction ▁in ▁a ▁one - party ▁system ▁ident ifies ▁itself ▁as ▁a ▁party , ▁where ▁membership ▁might ▁provide ▁benefits ▁not ▁available ▁to ▁non - members . ▁A ▁single - party ▁government ▁often ▁requires ▁government ▁officials ▁to ▁be ▁members ▁of ▁the ▁party , ▁features ▁a ▁complex ▁party ▁hierarchy ▁as ▁a ▁key ▁institution ▁of ▁government