Sen. Mitch McConnell has announced he won’t seek reelection next year, ending a decadeslong tenure as a power broker who championed conservative causes but ultimately ceded ground to the fierce populism of President Donald Trump.

LOUISVILLE, Ky. − Sen. Mitch McConnell, who has spent nearly half a century in the nation's Capitol shaping Republican priorities while thwarting Democratic policies, will not seek reelection when his term expires next year.