sentences:  The Presiding Bishop is elected by the General Convention, takes office on the 15th November following his predecessors retirement, and serves until the 14th November following his 72nd birthday; his successor having been elected at the previous General Convention.In the event of an unexpected vacancy, the senior bishop by date of consecration who has jurisdiction acts as Presiding Bishop until the next General Convention.The Presiding Bishop is assigned the following duties "to preside over meetings of the House of Bishops... ; take order for the consecration of bishops, duly elected; ...and perform such other duties as shall be assigned to him by the General Convention."