I don't think there should be a vote at all. The scientist must be free from petty and false ethics, the artist must be free from the censor and the strong must not be held back by the weak; regardless of how luddites vote.
We are talking about experimentation on the non-living. Irrational beings which cannot hold an opinion, and which cannot respect the rights of the living. If something is incapable of mutual respect for rights, then it is unable to possess rights of its own.
We are talking about inhuman parasites like this
We can sacrifice infinite amounts, providing we have the consent of their owners, to cure one living man and it would be far more moral than the repulsive priests who denounce it.