Robert F. Kennedy, Jr., has filed legal arguments with the Illinois State Officers Electoral Board, hoping to stop the petition challenge. He argues that the objectors failed to serve the Kennedy candidates for presidential elector, and that this is a fatal error. Duffy v Kennedy Electoral Board, 24-SOEB-GE 508. Thanks to Sam Cahnman for this news.

Meantime, the preliminary process for a petition challenge has been completed, with representatives of the Kennedy campaign and the objectors having hashed out their positions on each one of the disputed signatures.