Pete/Pcb21 said:
Articles can be renominated for deletion as many times as is necessary in order to get them deleted (although it is considered poor form to renominate soon after the last time it survived).
I think there's a good consensus now (alas, one I inadvertently created) that the community will not bear excessive renominations. I forget how many tried that troll article had, but it was at least four. It seems that four unsuccessful attempts to delete is considered to be far too many.