My favorite quotes from the article:
When you have eliminated the impossible, as Sherlock Holmes told Watson, then whatever remains, however improbable, must be the truth. This rule holds for presidential contests as well as for whodunits: Romney is improbable, but his rivals are impossible, and so he will be the nominee.
Romney’s path to the nomination is more wide open than for any nonincumbent in decades. He should win New Hampshire and Nevada, Florida and Michigan. He should dominate the Rust Belt, the Northeast and the Mountain West. And if need be, he can seal the nomination late, with wins in the New York and California primaries.