Wisconsin Supreme Court Justice David Prosser will not be charged after a special prosecutor found a lack of evidence to support fellow Justice Ann Walsh Bradley’s claim that Prosser put her in a “chokehold” in a confrontation in her chambers. Four other justices were in the room at the time of the incident.

The incident between Bradley and Prosser took place in mid-June after Prosser’s contentious, but successful, reelection bid against JoAnne Kloppenburg. As the collective bargaining legislation initiated by Gov. Scott Walker, R-Wis., headed to the Wisconsin Supreme Court, Prosser’s reelection campaign devolved into a referendum on the law. Pro-union groups hope to replace Prosser, known as a conservative justice, with the liberal Kloppenburg and thus shift the court from 4-3 conservative majority to a 4-3 liberal majority.