Updated September 19, 2026.
Quick answer: McConnell led Senate Republicans for 18 years, from 2007 through 2025, serving as majority leader from 2015 to 2021.
Leadership record
The Senate records him as Republican leader from 2007 through 2025, with majority-leader service from 2015 to 2021 and minority-leader service before and after that period.
Areas of influence
His tenure was closely associated with judicial confirmations, Republican legislative priorities, appropriations and Senate procedure. His leadership also covered periods when legislation required cross-party negotiations.
After 2024
McConnell stepped down as Republican leader after the 2024 election. John Thune became Republican leader in January 2025, while McConnell remained a senator.
Supporters credit McConnell with advancing Republican priorities and judicial nominees; critics focus on his use of procedural power and opposition to Democratic priorities. Those are competing interpretations of a documented record.
