LIVE: Republicans are facing 3 huge tests in the first primary elections of the season

Results 43% precincts reporting (these will be updated as numbers come in):

Mike Braun: 41.1%

Rep. Luke Messer: 29.5%

Rep. Todd Rokita: 29.4%

Sen. Joe Donnelly (incumbent, unchallenged)

The Senate race in Indiana was the expensive primary battle in the country, according to the Indianapolis Star, which noted that candidates spent $1 million dollars on ads in the run-up to Tuesday’s primary, with Braun, a self-funded candidate and businessman, taking the lead on that front.

Trump won Indiana in the 2016 presidential election by about 19 points.

Results 0.6% precincts reporting (these will be updated as numbers come in):

Rep. Jim Renacci: 46.7%

Mike Gibbons: 31.9%

Sen. Sherrod Brown (incumbent, unchallenged)

President Donald Trump gave Renacci the thumbs-up in Ohio, a state where Trump won more than 51% of the vote in the 2016 general election.

Unlike West Virginia and Indiana, the president's endorsement could be particularly consequential, for better or worse. While Trump flipped the state in 2016, a majority of voters there picked Barack Obama in 2008 and 2012.