STORY: Tuesday's elections delivered a split result for Trump, who has endorsed more than 150 candidates as he tries to shape his Republican Party ahead of a possible 2024 presidential run.
In Nebraska, his choice for governor, Charles Herbster, lost to rival Jim Pillen, according to Edison Research, even though Trump had hosted a rally for him a little more than a week earlier.
In West Virginia, voters opted for Representative Alex Mooney, a candidate who has backed Trump's false claims about fraud in the 2020 presidential election.
Tuesday's elections are part of a series of nominating contests that will set the stage for November 8 elections in which Republicans are favored to win control of at least one chamber of Congress, which would give them the power to bring Democratic President Joe Biden's legislative agenda to a halt.
Trump's influence will be put to the test in high-profile Senate contests later this month in Pennsylvania, North Carolina and Georgia.