The Senate Majority and Minority Leaders are two United States Senators who are elected by the party caucuses that hold the majority and the minority. These leaders have the most time serving in the senate from both major parties.
The current leaders are Republican Majority Leader Mitch McConnell of Kentucky and Democratic Minority Leader Chuck Schumer of New York. The current Assistant Majority Leader is Republican John Cornyn of Texas. The current Assistant Minority Leader is Democrat Dick Durbin of Illinois.