In the midst of economic discontent, George H.W. Bush ran against Bill Clinton on character and experience. Clinton pledged to fix the economy. Bush had little or nothing to offer the middle class, while Clinton (like Obama this year) promised those voters a tax cut.
So, by all means, McCain should highlight Obama's troubling friendships, but he has to be careful. If it's the candidate of "change" versus the candidate of "change the subject," he'll lose in an electoral landslide.
© Jed Lewison