When has BO corrected his own supporters or disowned anything they've said (when he wasn't forced to, that is, and then only in a minimal weasel way)?
McCain said this ONCE, meanwhile authorizing the smear ads, hiring the goons, and sending Palin into the field with the fear and bigotry agenda.
Obama has held his so-called "negative" ads down to a level of 34% (him) to 100% (McCain), and FactCheck.org has determined that the majority of McCain's are "misleading" or "outright lies", Obama's have been almost entirely fact checked as "TRUE" or at worst, "misleading". Look it up. The organization is NON-partisan.
Meanwhile, he has told all of his people not to mention McCain's failing health, the Keating 5 scandal (talk about associations!), made Palin's childen and home life OFF LIMITS, etc. etc.
When Obama tries to bridge the divide by agreeing with McCain during the debates on issues where we all have no differences, McCain's response to to put out ads deriding Obama for saying "I agree the with the good Senator" and to respond dismissively to a man with a higher IQ and a much better memory as "he doesn't understand" over and over again.
When PALIN stops inciting racial hatred disguised as "terrorist" fearmongering, then I will know that McCain is stepping back up to the plate as the man he USED to be 10 years ago.
Notice how Biden has never even started to take the Palin attack dog mode in this campaign? Who do you think made the executive decision to run his campaign this way and commanded the respect to enforce it?