Elections Code § 20006
CHAPTER 1. Endorsements of Candidates
The superior court, in any case brought before it by any registered voter, may issue a temporary or permanent restraining order or injunction against the publication, printing, circulation, posting, broadcasting, or telecasting of any matter in violation of this chapter, and all cases of this nature shall be in a preferred position for purposes of trial and appeal, so as to assure the speedy disposition thereof.