What are the essentials of a republican form of government?

A republic is a government deriving all its powers directly or indirectly from the great body of the people, and is administered by persons holding their offices during the pleasure of the people electing them, for a limited period or during good behavior.1. "Our American Government, What Is It? How Does It Function? 171 Questions and Answers", Washington, D. C., 1969, page 1.