In John Kerry's latest e-mail (dated April 27, 2005):
No, I'm not running for mayor. But, my good friend, Antonio Villaraigosa is.
If Senator Kerry only has one good friend (which sounds about right to me):
But, my good friend, Antonio Villaraigosa, is.
If he has more than one:
But, my good friend Antonio Villaraigosa is.
Sadly, either way, he had it wrong. And that's his presidential campaign in a nutshell.