coan.net: I would think you would have to be careful with adding another option as it may get less voes only because it was not there when the first people voted. I would suggest doing one or both of the following (if this is even ever implemented):
1. send a message to everyone already voted to inform them of the new option. 2. mark the added option so everyone knows it was not there originally when viewing the results.
(Cacher) Jouez une partie en temps réel avec un joueur en ligne! Pour que cela soit possible, vous et votre adversaire devez choisir l'option "Jouer et rester ici" par défaut puis recharger la page avec la touche F5. (TeamBundy) (Montrer toutes les astuces)