▁was ▁elected ▁to ▁the ▁Const itu ent ▁Congress ▁as ▁Senator ▁for ▁São ▁Paulo . ▁Due ▁to ▁his ▁leading ▁position ▁in ▁the ▁Party , ▁he ▁was ▁chosen ▁by ▁his ▁pe ers ▁as ▁President ▁of ▁the ▁Const itu ent ▁Congress , ▁that ▁prom ul g ated ▁the ▁Brazil ' s ▁first ▁republic an ▁Constitution ▁in ▁ 1 8 9 1 . ▁ ▁Mor ais ▁ran ▁in ▁the ▁first ▁Brazil ian ▁president ial ▁election ▁( con duct ed ▁by ▁the ▁Const itu ent ▁Congress ▁after ▁the ▁prom ul g ation ▁of ▁the ▁Constitution ▁and ▁in ▁accord ance ▁with ▁its ▁trans itional ▁prov isions ), ▁but ▁lost ▁to ▁inc umb ent ▁Head ▁of ▁the ▁Pro vis ional ▁Government ▁De od oro ▁da ▁Fon se ca . ▁After ▁that ▁election ▁and ▁the ▁inaug uration ▁of ▁the ▁first ▁President ▁and ▁Vice - Pres ident , ▁the ▁Congress ' s ▁function ▁as ▁a ▁Const itu ent ▁Assembly ▁ceased , ▁and ▁it ▁became ▁an ▁ordinary ▁b ic amer al ▁National ▁Congress , ▁where up on ▁Mor ais ' ▁role ▁as ▁President ▁of ▁the ▁Const itu ent ▁Congress ▁ended . ▁Senator ▁Pr ud ente ▁de ▁M ora es ▁was ▁then ▁elected ▁Vice - Pres ident ▁of ▁the ▁Federal ▁Senate , ▁the ▁Legisl ature ' s ▁upper ▁house . ▁The ▁Pres iden cy ▁of ▁the ▁Senate ▁was ▁v ested ▁by ▁the ▁Constitution ▁in ▁the ▁Vice - Pres ident ▁of ▁the ▁Republic . ▁In ▁November ▁ 1 8 9 1 ▁however , ▁President ▁De od oro ▁da ▁Fon se ca ▁attempted ▁to ▁dissol ve