The current majority leader of the U.S. Senate is Senator John Thune (R-South Dakota). He was elected as the Senate majority leader by Senate Republicans on November 13, 2024, and assumed the role with the start of the 119th Congress in January 2025
. John Thune succeeded Mitch McConnell as the Republican leader in the Senate and leads the Republican majority, which holds 53 seats in the Senate as of 2025
