Senator Bill Cassidy, a Louisiana Republican and chair of the high chamber’s education committee, conceded his loss in the Louisiana primary Saturday. The incumbent placed third in a three-way race, ousted by a Trump-backed opponent, Rep. Julia Letlow, and state treasurer John Fleming, who will both advance to a June 27 runoff.

Sen. Bill Cassidy of Louisiana faces two challengers — one endorsed by the president — in Saturday’s primary, five years after voting to convict Trump.

Louisiana voters will participate in a revamped and stripped-down state primary Saturday and decide the political fate of an embattled Republican U.S. senator targeted for defeat…