1. The Republican contest is probably already down to two candidates: Mitt Romney v. Anyone Not Named Mitt.
2. Rick Santorum, in a victory of timing, got to be "Anyone Not Named Mitt" yesterday, with previous "Anyones" --- Michele Bachmann, Rick Perry, Newt Gingrich --- fading to the point of departure without a surprise boost in the next few weeks.
3. Even with a limited share of the vote, this is good news for Romney. Iowa, with its distinction as town-meeting caucuses rather than a primary in the voting booth, usually throws up surprise victors --- anyone remember Arkansas Governor Mike Huckabee in 2008? The challenge for a front-runner is to avoid embarrassment, and Romney has accomplished that.