Why? Is Gov. Palin a bitter Man-hater? [sarcasm] Seriously, I'd like to see McCain's numbers on how well she polls with certain demographics. My guess is that the Alaska Governor is not on most peoples' radar screens outside of FreeRepublic -- that's not necessarily a bad thing.
If Romney is out this is a huge mistake by McCain. Palin has zero name recognition. This reaks of McCain desparately trying to pander to the female voters. It reminds me of the Mondale / Ferraro ticket and will probably be as successful.