Not just that. An org can always do one-way support to get a candidate elected and then have no means or desire for discipline once they are in v office. This is the norm for US organizations that support electoral candidates.

So the org itself must prioritize discipline and be ready to cut any elected official loose. Unfortunately, the orgs most interested in electoralism are inherently the least principled and most opportunist and view simply having someone elected in their name as the main goal and success in itself.

therefore even if he weren't such a piece of shit

There is no such thing as a non-POS Democrat.