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Skipping should not affect your rating, but skipping too fast does seem to trigger a cooldown, just like going too fast on other submissions that you do review can. Really study the nomination before you decide to skip it. Ask questions here in Review Support to know for the next time you see a similar nomination. Trying to skip through to get to ones from a certain area may look like voting ring abuse, but I don’t know that for a fact. We are not given very much information about the review process, and that is intentional to make it harder to be abused.
Here is a comment from staff about rating: