idk the way I see it in general is that the dems have the whole host of candidates, each with unique view points specifically tailored to resonate with specific demographics. They gather people who share the views then end up just falling like bowling pins, throwing their support behind the already pre-determine establishment candidate, e.g. Biden & Harris. The other candidates being in the race is purely political theatre, to make them feel like the party represents them, when in all reality their campaign is just talking points that sound good on TV, once they get into office they just work for their corporate masters with no regards given to their former promises or people they claim to represent.