▁G over ning ▁magazine ▁project ed ▁the ▁race ▁as ▁" likely ▁Republican ". ▁ ▁Pol ling ▁ ▁Results ▁ ▁Att orney ▁General ▁Inc umb ent ▁Republican ▁Att orney ▁General ▁Mark ▁Br nov ich ▁won ▁re - e lection ▁to ▁a ▁second ▁term . ▁ ▁Republican ▁primary ▁Mark ▁Br nov ich , ▁inc umb ent , ▁former ▁director ▁of ▁the ▁Arizona ▁Department ▁of ▁G aming , ▁former ▁Ass istant ▁US ▁Att orney , ▁and ▁Ass istant ▁Att orney ▁General . ▁ ▁Primary ▁results ▁ ▁End ors ements ▁ ▁Democratic ▁primary ▁ ▁C andid ates ▁January ▁Con tr eras , ▁former ▁director ▁of ▁Arizona ▁Department ▁of ▁Health ▁Services ▁and ▁a ▁senior ▁ad visor ▁to ▁Hom eland ▁Security ▁Secretary ▁Jan et ▁Nap olit ano . ▁ ▁Primary ▁results ▁ ▁Libert arian ▁primary ▁Michael ▁K iel sky ▁( write - in ▁candidate ), ▁ ▁End ors ements ▁ ▁General ▁election ▁ ▁Pol ling ▁ ▁Results ▁ ▁State ▁Tre as urer ▁Inc umb ent ▁Republican ▁State ▁Tre as urer ▁Jeff ▁De W it ▁announced ▁on ▁April ▁ 6 , ▁ 2 0 1 6 ▁that ▁he ▁would ▁not ▁run ▁for ▁re - e lection ▁to ▁a ▁second ▁term ▁as ▁State ▁Tre as urer . ▁De W it ▁res igned ▁in ▁April ▁ 2 0 1 8 ▁to ▁become ▁C FO ▁of ▁NASA ▁and ▁his ▁replacement , ▁E ile en ▁Klein , ▁announced ▁that ▁she ▁would ▁not ▁be ▁running ▁for ▁re - e lection . ▁ ▁Republican ▁primary ▁Kim ber ly ▁Y ee , ▁state ▁sen ator ▁Jo ▁Ann