Thread:RansomTime/@comment-5715450-20140802063425/@comment-5454372-20140802071303

According to Help:CheckUser, only an admin from a wiki can request an IP check on users from the same wiki, and this is supposed to be done via Special:Contact.

If you're an admin there, I'd suggest going to the wiki in question, accessing Special:Contact from your wiki and submitting a request yourself with full reasoning as to why you're requesting it. If you're not an admin, the best you can do is to let the current admins know about the procedures so they can submit a request if they choose to.

Procedural matters aside, if you fear that the vote is being manipulated, perhaps calling a freeze or an extension on it would be a good idea until after the CheckUser is done (if submitted). I would also suggest you pay attention to how many "new" users seem to be voting: on one of my communities, users can only participate in votes if they have at least a certain number of edits and have been around for a certain period of time (obviously not foolproof, but it makes sockpuppeting votes much harder unless you've set it up several months in advance).