Bernie's not going to do that. Buttigieg is not going to do that. Warren is not going to do that. Biden might, but he's added senility to his stupidity and evidence of his corruption grows daily, so they have to look back to Bernie... and the relook at their alternatives begins again with no realistic scenario for victory, to overstate the case.
I think unionistas will turn out for Bernie, those that aren’t voting for Trump. I’ve never understood the claim that Biden had the unionista crowd. Every hard core unionista leftist I ever met was a Bernie bot!