where instead of nominating the winner of the primary the candidate, the delegates from each state can nominate someone else, and the DNC will need to reach a consensus. This is if Biden “decides “ to step down. The open convention is not a good visual for the Democrats. And that’s why Gavin Newsome, the governor of California, quikly offered his support for Biden after the debate, because he is probably one of the likely replacement for Biden and he wants to calm down the panic. at this point someone like Obama , Harris or Pelosi can offer the pivotal support for Biden , or vice versa. Open convention is not a remote possibility at this point.