That's true. Large numbers of Republican and independent voters will likely swing to vote for Hillary, if Obama isn't nominated. Feminists, along with
religious (see '90s "swing vote") and import interests (China, for one) are hoping that Hillary will be nominated. Many are afraid that McCain will be too hawkish about defense (that he'll stop Iran from building nukes and the like).
The best thing for the Republicans is for Obama to finish Hillary Clinton now. All what the evil woman needs to do if she is the nominee is to win Ohio and she is going to be President.