Elon Musk, President Donald Trump‘s billionaire backer, has funneled more than $2.6 million and counting into a Wisconsin Supreme Court election that could decide on a case involving Tesla, his electric vehicle company.

The contest that will decide the political tilt of the swing state’s highest court is likely to be the most expensive state court race in U.S. history.

sk has set his sights on another questionable goal: electing Brad Schimel to the Wisconsin Supreme Court. “Very important to vote Republican for the Wisconsin Supreme Court to prevent voting fraud!” Musk posted last month on X, which he owns, along with everything else.