io ▁Cob os , ▁considered ▁a ▁likely ▁U CR ▁primary ▁candidate , ▁had ▁stated ▁his ▁intention ▁to ▁run ▁only ▁in ▁August , ▁during ▁the ▁coal ition ▁prim aries ; ▁he ▁dropped ▁out ▁in ▁April ▁as ▁well . ▁ ▁The ▁U CR ▁and ▁the ▁Social ist ▁Party ▁( part ners ▁in ▁the ▁C iv ic ▁and ▁Social ▁Ag re ement ) ▁part ed ▁ways ▁in ▁May ▁ 2 0 1 1 , ▁with ▁Alf ons ín ▁and ▁Santa ▁Fe ▁Governor ▁Herm es ▁B inner ▁running ▁on ▁separate ▁sl ates ▁for ▁the ▁prim aries ▁in ▁August , ▁and ▁likely ▁in ▁the ▁general ▁election , ▁as ▁well . ▁ ▁Alf ons ín ▁secured ▁an ▁al liance ▁with ▁Federal ▁Per on ist ▁candidate ▁Francisco ▁de ▁Nar vá ez ▁in ▁Buenos ▁Aires ▁Province , ▁De ▁Nar vá ez ▁ran ▁for ▁governor ▁with ▁his ▁senior ▁partner ' s ▁end ors ement ▁in ▁return ▁for ▁his ▁support ▁for ▁Alf ons ín ' s ▁president ial ▁campaign . ▁Alf ons ín ▁nominated ▁former ▁Central ▁Bank ▁President ▁J avier ▁González ▁F rag a , ▁a ▁non - part isan ▁econom ist ▁close ▁to ▁both ▁the ▁U CR ▁and ▁Federal ▁Per on ism , ▁as ▁his ▁running - mate ▁on ▁ 2 ▁June . ▁ ▁De ▁Nar vá ez ▁with d rew ▁his ▁end ors ement ▁of ▁Alf ons ín ▁in ▁favor ▁of ▁Rodríguez ▁Sa á ▁following ▁the ▁ 1 4 ▁August ▁prim aries , ▁though ▁he ▁continued ▁his ▁campaign ▁for ▁Governor ▁of ▁Buenos ▁Aires ▁with ▁Alf ons ín ' s ▁end ors