As I said earlier, Romney and Palin are going to run way ahead of everyone else in raising the money they need to compete in the primaries. So perhaps Palin gets Iowa, Romney gets New Hampshire and Michigan, Palin takes Carolina, etc etc, and then it's Super Tuesday for all the marbles.
You know the best part? Obama, who will have no serious challengers, can pop some popcorn and watch Palin and Romney debating a dozen times in Iowa -- Romney who has had at least two positions on every issue, and Palin who has no clue at all on any issue. And then Obama steps in and destroys the bloodied survivor of the GOP race.