You can’t possibly have missed the coverage today about McCain’s many homes, fueled by his own odd inability to total them up for Politico. The gaffe has given Obama’s new populist push a kick-off beyond the campaign’s wildest dreams. The best clue to how flustered it has the GOP machine? Heard Rush Limbaugh on the way to work, fulminating and defending McCain by pointing out that he, Limbaugh, also has a grand total of seven homes. Sweet.