Two lower courts had already rejected the legal challenge by Democrat Josh Kaul, who argues that Musk's offer violates a state law.

On Sunday, a few thousand people in Green Bay, Wisconsin, gathered to hear Elon Musk speak — and give away two giant cardboard checks for $1 million. Attendance at the event was limited to people who had added their names to a petition against “activist judges,

Republican observers and other experts say Elon Musk's involvement in Brad Schimel's Wisconsin Supreme Court campaign backfired as a strategy.