Awesome news! Lot of work but it's worth it.
Having gone through an election at Sysco just a year ago:
1) Keep talking to everybody. Job #1 for Sysco over the next week will be to either charm or scare the hell out of enough of the 77 card signers to win. Think "divide and conquer", if they can get you all fighting amongst yourselves they'll be able to pick you off one at a time.
2) Document everything they say to you in meetings and save all of the letters they're going to mail to your house to "inform" you of why you should vote no. It's you vs an army of attorneys, if they break the law to win you can't fight back without proof.
"Win now, pay the fines later" seems to be how they operate pre election and they seem to be getting more aggressive at each house that falls.
3) They've made "a list" of where they think each of you stand. Here the forced meetings were in small groups based on that list with the troublemakers all together. You need to try to find out what was said in those meetings as the dialogue will be tailored to each group and you need to counter their BS with your message. It's a propaganda war and they can't have the last word or that's what'll be in people's heads as they go to sleep the night before the election.
4) Try not to get too frustrated with the guys who seem to be falling for the company's sales pitch. Most are just scared, keep reminding them of why you need a union. A couple of our biggest critics here have become supporters in the last year, one to the point of apologizing for things he said during the campaign. Water under the bridge, after you win you'll have to hug it out in order to move forward because they'll want to keep you guys fighting as you work on your first contract.
Good luck. Every new location under contract makes all of us stronger.