[snip] And McKinnon has indicated he would review his options, should Secretary of State Condoleezza Rice or the president's brother, Florida Gov. Jeb Bush, run in 2008.
This article begins with the unequivocal statement that McKinnon has commited to help McCain, and the remainder of the article says that McKinnon is keeping his options open.
Wishful thinking on the part of the author?
No, for him to say he'll sign up with McCain barring two very unlikely scenarios (runs by Rice or Jeb) is a serious commitment.