US Rep. Julia Letlow will win the Republican nomination for Senate in Louisiana, CNN’s Decision Desk projects, defeating state Treasurer John Fleming in a runoff in which she made her endorsement from President Donald Trump a centerpiece of her pitch.

President Donald Trump's choice for U.S. Senate in Louisiana is seeking to secure the GOP nomination and deliver another win for the president in his effort to replace Republicans…

Trump-backed Rep. Julia Letlow is facing state Treasurer John Fleming in Saturday’s race for the Republican nomination.