Longtime Republican Sen. Mitch McConnell announced on Thursday he will not seek reelection next year.

McConnell, who turned 83 today, was largely expected to end his Senate tenure at the conclusion of his term in January 2027 but made it official in a floor speech.

The Kentucky lawmaker stepped down from his role as party leader last year after a record-breaking 18 years atop the GOP conference.

This is a developing story. Please check back for updates.