It will be Pelosi, who will then proceed to knock her off using either NBC disqualification or the orgy pix that they have been holding on to since she ran for California AG...that everyone knew about
Pelosi is already acting as President, and did for the last month of Trump’s term. She wants to formalize it. She’s close.
I would note that if Harris has *any* say in it - which I doubt anyone will even bother to ask her - she would be a fool to advocate for Clinton or Pelosi. That would be literal suicide. No way Harris would last even 4 months. Putting yourself as the only thing between either of those monsters and the Presidency...might as well off yourself. At least that way you could make it quick and painless.