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President pro tempore of the United States Senate - Wikipedia
About the President Pro Tempore - U.S. Senate
List of presidents pro tempore of the United States Senate
About the President Pro Tempore | Historical Overview - U.S. Senate
About the President Pro Tempore | Presidents Pro Tempore - U.S. Senate
Patty Murray - Wikipedia
President pro tempore of the United States Senate
President of the U.S. Senate - Ballotpedia
The President Pro Tempore of the Senate: History and Authority …