Mitch McConnell, a U.S. senator for Kentucky, will not run for reelection in 2026. McConnell is the same age as Vermont's U.S. Sen. Bernie Sanders. Sanders is currently the second-oldest sitting ...

Considering all of this, it’s no surprise that several Senators have served well into their 80s and beyond. In fact, the oldest person to ever serve as a senator was Strom Thurmond (R.- ...