Newsweek/Factcheck.org cover McCain's shamelessness:

On the defensive over the extent of multiple McCain homes, the GOP candidate strikes back. But his TV spot gives an oversimplified and misleading account of how Obama bought his own $1.6 million house in Chicago.

The ad says Chicago power broker Tony Rezko got "political favors" including "$14 million from taxpayers." But there's no evidence of any connection to the Obama home purchase. The $14 million was to build apartments for low-income seniors. Obama wrote a letter supporting the "worthy" project, but both men say Rezko didn't ask for the letter.

It says Rezko "purchased part of the property [Obama] couldn't afford." Rezko's wife did buy an adjoining tract but later sold the land at a profit. Obama paid market price for his home.

Earth to McCain's campaign...Earth to McCain's campaign: this line of attack failed the first time around.

It's embarrassingly clear that McCain has nothing. Everything he's come up with to date has been concocted by someone's pasty, wrinkled imagination. Obama, on the other hand, has been drawing from a bottomless well of caught-on-tape McCain gaffes, misstatements and acts of out of touch. And that's just McCain--his surrogates are another gold mine (not to mention the slew of f###-ups they'll commit between now and November).

It requires the suspension of belief to think that Obama, with his humble roots, has abandoned the middle class he's been fighting for his entire adult life, whereas McMansion is suddenly their champion. But that's all McCain can ask of his voters--suspend your belief. According to Bush's approval ratings, these voters should put 26-30% of the electorate in McCain's corner: