Northam won’t resign, because he knows Fairfax is toast, and Herring is, too, if Northam resigns. Which would leave a REPUBLICAN next in line! Aaaarghh! What to do, what to do??
They might pull a fast one. If Northam appoints a Lt Gov to replace Fairfax, he could then resign having effectively appointed his own replacement. And the bidding starts at...
I'm not from VA, so I don't know the legalities there or if the above is really possible or politically feasible. I do know the Dems will do anything to keep a Republican out of the Gov's Mansion.