Okay, gaming this out.
If the election isn't settled by January 20th, law requires that the next in line to the Presidency step in as acting President. That's the Speaker of the House. But chatter says that the House will have a lot of difficulty electing a Speaker, given division from far leftists toward Pelosi, etc. Previously, sometimes it took the House 2 or 3 months to decide on a Speaker. And maybe Nan will be sitting in Gitmo soonly.
So if there's no Speaker on January 20, guess who's next in line?