One of the principal (if not only) cards played by the Billary machine is the FUD-style reasoning: we don't know what we're going to get with Obama, while we do with Clinton. Also, they play up the experience card, despite the fact that Obama has more legislative experience than her (8 years in IL State Senate + 3 in US Senate > her 7 in US Senate), and being First Lady or a governor's wife (which she was for 19 of her 35 touted years of experience) should not be equivocated with being co-President or being co-governor.
Well, Frank Rich has decimated the first line of reasoning by pointing out the serious and lingering questions that remain un-investigated surrounding Bill's post-presidential affairs (not necessarily the extra-marital kind) and the funding of their presidential library by Saudis. This almost seems like an opening salvo to begin the actual "vetting" of Billary post-2000. Frank goes on to point out the utter inability of the Bill&Hill 2nd presidency to bring about change, something voters are crying out for, and the likelihood of stirring up the "vast right wing conspiracy" against them.
Furthermore, Hillary's lines about "experience" and being "tested" would not fare well against John McCain, whose actual life exploits make her experience and tests a bit of a satire.
Things are heating up...