SLIPPED DISK No one is buying Terry McAuliffe's story that some innocent Democratic staffer happened upon a computer disk on a street corner that revealed the White House and the Republican Party's assessment of the 2002 elections. You'll recall, the DNC earlier this month announced that it had obtained through Republican bumbling a computer disk that contained a PowerPoint presentation prepared by Karl Rove, the White House and the RNC, and outlining their evaluation of the fall campaign. It was mildly embarrassing, if only because the presentation took a more cautious approach to certain elections: it didn't predict a sweep...