"The next 45 days are about whether Rudy or Mitt runs against Hillary," - Hugh Hewitt.
This strikes me as more plausible:
On February 7, presumptive nominee Mike Huckabee pledges a campaign of "compassion, comparison, and civility" against presumptive Democratic nominee Barack Obama. New York City mayor Mike Bloomberg announces the formation of an exploratory committee for an independent presidential campaign. Rumored budget: $1.5 billion. The cover of TIME magazine screams: "Tsunami 2008: The Year of the Upset."