Great question — answering as the UphillTech team:
Nominated : The actor has not yet received the award, but will receive it. No, it means the actor is one of several who is being considered for the single award. 4-8 may be nominated, but only one wins it.
Full answer by Andrew Thompson: https://movies.stackexchange.com/a/28651 (CC BY-SA 3.0).
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