A senior source involved in the process told me fairly late last night:

“We’re going into this vote and we don’t have 50 right now.”

“There’s been a lot of work that was done today, by members wading through this material. I don’t want to put my thumb on the scale. Things keep moving — so much, it feels like we’re walking on quicksand. So I don’t even want to say confidence or not confidence.”

“Sometimes you just have to vote,” the source added. “But what if … something f—g happens in the morning? This whole process has just been … so much drama, so many balls coming out at the last minute.”