Nevada state Sen. Carrie Buck won the Republican nomination for Nevada’s 1st Congressional District on Tuesday, defeating businessman Michael Boris and other candidates in a closely watched primary contest to challenge Democratic Rep. Dina Titus in November.Buck’s victory comes after receiving endorsements from President Donald Trump and Gov. Joe Lombardo, as well as backing from national Republican groups focused on protecting and expanding the party’s House majority.

Trump-endorsed candidate Marty O’Donnell advanced in a crowded GOP primary race to face off against Democratic incumbent Rep. Susie Lee in Nevada’s 3rd congressional district.O’Donnell is best known as the composer for the popular “Halo” and “Destiny” video game franchises and has run his campaign on putting “families first,” as well as promoting small businesses and community safety.

Nevada Attorney General Aaron Ford defeated Washoe County Commissioner Alexis Hill in Tuesday’s Democratic primary, advancing to a showdown with Republican Gov. Joe Lombardo in one of the nation’s most competitive governor’s races.Ford entered the race as the Democratic frontrunner in a field that included Hill, Sunshine Arterburn, Miqehl Bayfield, Emile Bouari and James Cooper.

Incumbent Rep. Susie Lee, D-Nev., won Nevada’s 3rd Congressional District Democratic primary Tuesday.Lee’s district, comprising the southern end of the Las Vegas metro area and extending through sparsely populated communities like the late Sen. Harry Reid’s hometown of Searchlight, is one of the West’s most competitive swing districts, with a Cook Political Report rating of D+1.