The other side (pssst...Republicans) are really scared.
The golden test of credibility is that when you don't have anything positive to say about you, then you spend your time (and money) saying negative things about the others. That's old Karl Rove tactics used by Bush 2000 and Bush 2004.
Another proof that McCain=McBush.
Same old candidate
Same old politics,
same old tactics,
same failed policies.
McSame as Bush 2008