A group backed by billionaire Elon Musk is behind a new set of deceptive attack ads and text messages targeting voters just weeks ahead of the election for a seat on Wisconsin’s Supreme Court.

A vast majority of Wisconsin voters have not heard of either candidate in the state’s Supreme Court race, but among those who have, they view the conservative candidate more favorably. A poll from Marquette University Law School found that conservative Waukesha County Judge Brad Schimel,

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.