McCain's strategy is that there is enough of a "Bradley effect" that the election is 3%-5% closer than the polls indicate, and that scare tactics can convince another 3%-5% of white voters not to vote Obama.
To the frustrated Democrats who have responded to Obama's stationary poll position by wailing for their candidate to quit dancing and fight like a man, now I hope you see where the low road will take you.
Palin quickly picked up the fallen standard of those Hillary voters who put "18 million cracks" in the glass ceiling. She didn't crack anything. John McCain helicoptered her to the roof, and they led her down the back stairs.