Come up with a question and reasoning that would justify this answer: the most senior member of the majority party
The question is: The president pro tempore of the Senate is traditionally the most senior member of the majority party.

Answer this question based on the passage: who is the highest ranking member of the senate?
Step-by-step reasoning process: This is the relevant information: The president pro tempore of the Senate is traditionally the most senior member of the majority party.
