Sure, John McCain's selection of Sarah Palin to be his running mate fully consumed a GOP convention that was supposed to be focused on thumping Barack Obama over the head. And it may have raised questions about McCain's own judgment and seriousness. But, as we have been told ad nauseam since the surprise choice was announced last Friday, Palin has already provided one unquestionable, invaluable assist to the Republican campaign: with one sweep of her perfectly manicured hand, she has supposedly erased McCain's Evangelical problem and united the base that proved so key to George W. Bush's victory in 2004....