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137th President Pro Tempore of the Senate
137th President Pro Tempore of the Senate
135th President Pro Tempore of the Senate
136th President Pro Tempore of the Senate
133rd President Pro Tempore of the Senate
134th President Pro Tempore of the Senate
131st President Pro Tempore of the Senate
132nd President Pro Tempore of the Senate
129th President Pro Tempore of the Senate
130th President Pro Tempore of the Senate