The Majority Leader and Minority Leader are elected by their respective party conferences to serve as the chief Senate spokesmen for their parties and to manage and schedule the legislative and executive business of the Senate. By custom, the Presiding Officer gives the floor leaders priority in obtaining recognition to speak on the floor of the Senate.
The minority and majority leader positions in the U.S. Senate did not exist until the 1920s.
-  US Senate Reference
- Elving, Ron (August 17, 2019). How Does One Man Have So Much Power Without Being President? NPR. Retrieved August 18, 2019.