The summary says workers voted "by a wide margin" for a union, but it looks like it was 2,654 votes for, 2,131 against, which is 55.5% to 44.5% or a margin of 11%. I wouldn't call that a wide margin, but maybe it could be considered so in these sorry-ass times of perpetual 51-to-49 deadlock.
In light of the fairly small margin of victory, maybe some employees were too undecided to vote. I also wouldn't be surprised if the demands of the job left some without the capacity to engage with the question. I share your disappointment, though.
