Her private email server--who cares, right?
I'll bet the first two are certain. But I'm fairly certain neither Russia nor China will release any emails. Reason is that both those adversaries would far, far rather have a thoroughly corrupt socialist as president of the U.S. than the admittedly volatile, unpredictable Trump. Why would they want to help the more formidable candidate win?
I'm also pretty sure nothing about Hillary's emails will cost her a single vote, because the media and Comey have done their job of making the whole email topic a non-issue.