Limbaugh is saying Bunker Joe Hiden will not debate,  while making some excuse. Rush went so far as to say they might even offer up Klamidia Harris as a "stand in" debate replacement. 
That would be interesting.
  Would the democ-rats dare to let Kalam(ity) Harris stand in?  Wouldn't that be admitting that Joe is incapable?  Of course, they may want to place the kalamity in a debaate with Trump, so she can play the "vulnerable woman" part against "Trump the bully ".
  But of course, the democ-rats wouldn't mind if Joe is a waste, they will vote for a democ-rat, no matter what..and let their party's billionaire "handlers" work out the details. !