Design the Republican candidate who would be Hillary's worst nightmare

[Fuzzy Bear]

There is no possible GOP candidate that would be a "worst nightmare" for Hillary.  Anyone new is likely too inexperienced to beat her.  Anyone who has the goods on her probably has baggage themselves.  Hillary can be beaten, but the likelihood of her losing by anything other than self-implosion is small.  There is not a single GOP candidate I can think of that would make her think she's significantly vulnerable, and not a single GOP candidate that would scare away any of her donors.