I misread what was going on with the Culinary Union initially. My understanding, after doing some reporting, is that they were leaning Biden before Iowa and New Hampshire, but backed off after he was bad in the first two states. They figured he might struggle in Nevada and didn’t want to endorse someone who would lose and make the union look weak. It’s not clear, outside of an anti-Medicare-for-All flyer, how hard they went after Sanders. And not endorsing another candidate cleared the way for Sanders.
