I have the simple solution to Sandra's conundrum.
If--after speaking with each of her coworkers--she had one staunch holdout whose vote would be the tiebreaker, simply offer to pay him or her $1,000 out-of-pocket to vote in your favor. Boom! Problem solved. Sure, it'll cost you a grand but that's nothing compared to losing your entire salary. Sandra was being penny wise and pound foolish. Money talks, baby! Make it happen like Mariah Carey.