Number: RL30960 Title: The President Pro Tempore of the Senate: History and Authority of the Office Authors: Christopher M. Davis, Government and Finance Division Abstract: This report traces the constitutional origins and development of the office of the President pro tempore of the Senate, reviews its current role and authority, and provides information on Senators who have held this office, and the more recently created subsidiary offices, over the past two centuries. Pages: 32 Date: Updated April 2, 2008