_in a polling place_ no less

I see they were invited in by the person they wanted to intimidate, so that she wouldn't be alone, and there were no voters present. "Better judgement" would have been to not invite them and to not accept the invitation, but after the fact I could say it's preferable to the alternative. The person who decided to take action against this lady should be fired though.

Maybe you should ask them for an ID to make sure they belong there.