 
 <translate> Use stream of consciousness to answer the following. The U.S. Constitution also provides for appointment of one of the elected Senators to serve as President pro tempore. This Senator presides when the vice president was absent from the body. The President pro tempore is selected by the body specifically for the role of presiding in the absence of (as the meaning of pro tempore, literally "for the time being") the actual presiding officer. By tradition, the title of President pro tempore has come to be given more-or-less automatically to the most senior senator of the majority party. In actual practice in the modern Senate, the President pro tempore also does not often serve in the role (though it is his or her constitutional right to do so), instead, as governed by the aforementioned Rule I, he or she frequently designates a junior senator to perform the function.

Answer this question based on the passage: who is the backup leader of the senate? <ibo> Jiri usoro nke ịmara zaa ajụjụ ndị a. Iwu nke United States na-enyekwa maka nhọpụta nke otu n'ime ndị nnọchiteanya a họpụtara ahọpụta ka ọ bụrụ Onye isi ala pro tempore. Onye omeiwu a na-eduzi mgbe osote onye isi ala na-anọghị n'ahụ ahụ. Onye isi oche pro tempore na-ahọrọ site na ahụ kpọmkwem maka ọrụ nke idu ndú na enweghị (dị ka ihe pro tempore pụtara, n'ụzọ nkịtị "maka oge ahụ") onye isi oche n'ezie. Site n'ọdịnala, aha onye isi ala pro tempore abụrụla nke a na-enye onye isi oche kachasị elu nke otu ndị ka n'ọnụ ọgụgụ. N'ime usoro nke Senate nke oge a, Onye isi ala pro tempore anaghị arụ ọrụ ahụ (ọ bụ ezie na ọ bụ ikike iwu kwadoro ya ime ya), kama, dị ka Iwu nke mbụ a kpọtụrụ aha, ọ na-ahọpụta onye isi ala ka ọ rụọ ọrụ ahụ.  Zaa ajụjụ a dabere n'akụkụ Akwụkwọ Nsọ a: onye bụ onye ndu nkwado nke ụlọ omebe iwu? 