The thing here are the timing and the seal right. If they just want to know who vote what, they no need to do that on the spot. Then there six months to finding the "right" timing. Of course the boxes are seal and sign on the spot by representives of both parties. Shocking to you those seals can be forge quite easily once they are done with it. I know my client alway ask me to recreat things they have not fix or put on their product prototype on to their product image. So what a seal with two signature? Easy. Of course unless they are check by professional before they are burn. Where I got the idea? See the movies

Oh in the first place I was stating it does not need to take 999 manhours to counter check who vote whom if they want to

And I don't think they will