Which candidates, if any, have expressed their support for rehiring Gordon at the end of his contract?
None, so far as I can tell. Therefore it is incumbent on the current board to replace him, and as personnel decisions are not public - we are not likely to hear anything before the new Superintendent hire is announced or Gordon submits his resignation and allows the Board to publicly speak about the succession process.
Calling for the Board to violate Gordon's privacy by announcing the search publicly could get D41 sued. I think we are all better off doing this properly. Gordon continues to search and interview and is trying to find another position, he clearly wants a better gig. Let him go, quietly.