Floor Leaders are leaders of their political parties in each of the houses of the legislature. In the United States Senate, they 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. http://en.wikipedia.org/wiki/Floor_Leader

Party whips is the name give to the representatives of parties in the house. The assistant leader of the party with the most number of members is called the deputy majority chief whip.

There is one Majority Leader in the United States Senate. This position is held by the leader of the political party that holds the most seats in the Senate. As of September 2021, the Majority Leader is Chuck Schumer of the Democratic Party.

As of August 2014, Mitch McConnell is the Senate Minority Leader in the United States Senate. He is a member of the Republican Party.

Republican Mitch McConnell of Kentucky is the current Minority Leader of the

United States Senate .