Oh, he’s running for Gov.
Danny Tarkanian, apparently at the urging of the President, has ended his primary challenge to Heller and is running for House district 3 instead. He narrowly lost district 3 in 2016, while Trump narrowly carried the district. Several other prominent Republicans appear to be running, the seat is open as freshman rat Jackie Rosen is running for Senate.
Heller has a few other primary challengers, all desultory, so he’s as good as renominated, with the support of the President.