The Ecumenical Patriarchate in America comprises six separate jurisdictions, along with a number of stavropegial institutions, and includes roughly two-thirds of all Orthodox Christians in America. The archbishop of the Greek Orthodox Archdiocese of America, by far the largest of Constantinopolitan jurisdictions in the US, is considered the local primate and may convene a holy synod of all the hierarchs of the Ecumenical throne in America.