The Republican-controlled Wisconsin Legislature has asked that a liberal state Supreme Court justice step aside in a pending case that seeks to overturn a 2011 law that effectively ended collective bargaining for most state workers.

Two years after Wisconsin was subject to the most expensive judicial race in U.S. history, the ideological leaning of the Wisconsin Supreme Court is yet again in the hands of voters in the state’s April election.

The Wisconsin Supreme Court general election set to be held in April will determine ideological control of the court.