President Trump might have inadvertently damaged Republican chances of flipping a Democratic House seat in Nevada when he cleared the field for Sen. Dean Heller in the GOP Senate primary.

Trump convinced Republican Danny Tarkanian to drop his challenge against Heller and run for the open, Las Vegas-area 3rd Congressional District. The development boosts Senate Republicans and the vulnerable Heller, who can now focus on a tough fall campaign in a purple Nevada without having to protect his right flank in the June primary.