Michael Bloomberg, evidently seeking to further open the door to a 2008 campaign bid, is formally disaffiliating himself from the GOP. I wonder whether Bloomberg's partisan wanderings -- from D to R to I -- would hurt him in a presidential bid. On the one hand, voters hate "opportunist." On the other hand, they love "independence." Which Bloomberg is displaying here kind of depends on how you squint at things.
Speaking purely as someone who's going to have a professional obligation to write about the presidential campaign whether or not I get bored with it, I think the world is a more interesting place if Bloomberg runs simply because the map gets more complicated. One has to assume, however, that his choice will depend in part on the matchups. If, say, Rudy Giuliani is the GOP nominee it's a bit hard to see what political space Bloomberg's supposed to occupy.