Discussed here; Sanders needs to organize it. It could be built on the remnants of trusted people who had worked in his campaign.
Blue Sky: Should Petitions for 2026-2028 Independent Candidates be getting Organized NOW?
Starting a new alliance other than one with the specific focus of working class issues and gatekept by former Sanderites (and eventually newcomers that prove their tustworthiness…) is going to be a messaging mess. You might as well enlist Harris to give another unburdening speech…