Rep. Julia Letlow (R-La.) announced on Tuesday that she's launching a primary challenge to Sen. Bill Cassidy (R-La.), just days after President Trump preemptively backed her for a Senate run in Louisiana. "I have fought alongside President Trump to put America first, standing up for our parents, securing our borders, supporting law enforcement, rooting out waste, fraud and abuse that drives up inflation and fighting to fix an education system too focused on woke ideology instead of teaching," she said in a two-minute launch ad. "A state as conservative as ours, we shouldn't have to wonder how our senator will vote when the pressure's on," she continued, not mentioning Cassidy by name. "Louisiana deserves conservative champions, leaders who will not flinch." Cassidy wrote on X that Letlow, who's represented Louisiana's 5th Congressional District since 2021, had called him earlier on Tuesday to let him know of her candidacy.