A liberal just won the Wisconsin Supreme Court race. Republicans are already talking about impeaching her.

Janet Protasiewicz may have just won a seat on the Wisconsin state Supreme Court, flipping the ideological balance of the court to the bench’s liberal bloc for the first time in 15 years. But if a newly elected Republican state senator gets his way, that could all come crashing down. A GOP win in another Wisconsin race this week — the state Senate's 8th District — gave Republicans a supermajority in the chamber. With that power, Republicans in the state Senate will have the ability to pursue removal proceedings of...