HIllary can't win a one-on-one battle against any GOP nominee. Whether it's Rudy, Ron Paul, Duncan Hunter, or even Jeb Bush. She's just too abrasive and b!tchy to get the necessary votes, and she knows it. More importantly, so does the media.
The only way she can win is if the GOP nominates a RINO (with the media's help) and social conservatives either vote for a true conservative running as an independent (Ron Paul, Duncan, etc, etc...), or simply stay home.
The independent candidate will draw off just enough Rudy votes to allow Hillary to slide into victory with 38% of the vote. And even if she doesn't win, Rudy does, which is actually better for them. Why? Because now they've done serious damage to the GOP. The RNC will have proven they can win elections with liberal nominees, so long as those nominees are a hair to the right of the dem candidate. That pretty much leaves the social conservative without a home, politically speaking. (though it could be argued that they don't have a home now)
I won't vote for Rudy, and I won't vote for Hillary. I'll vote independent if a true conservative emerges. If not, I'll stay home. To vote for Rudy is to surrender the GOP to RINOs in its entirety.
In the mean time, I've sent Hunter some $$.