MADISON, Wis. (WRN) — The election to fill a Wisconsin Supreme Court seat is quickly becoming a referendum on the Trump administration and a test of enthusiasm on both sides.

For national Republicans, the race is all about President Donald Trump. But Democrats are trying a new tactic, focusing their fire on Elon Musk, the billionaire who is the race’s biggest donor, by far.

The vote on April 1 will be the first major test of American politics since the president secured a second term in November, serving as an early barometer of how voters feel about the direction Trump is taking the country in one of the most contested battleground states.