If Al Gore's surprise endorsement of Howard Dean has you rethinking some of your assumptions about Dean's "electability," take a look at this revealing electoral college infographic that the Times ran last week. To me, it calls into question a lot of what we've heard about how the Democrats can't win without a Southern centrist (the line usually trotted out to explain why Dean will be a huge fiasco in a national election.) But as this chart shows, there's basically no South for the Democrats to win: every Southern state save Florida is firmly in Bush's column, and as we know, Florida isn't really a Southern state anyway. (Too coastal, urban, multicultural, etc.) The undecideds are basically all the Rust Belt states, plus Arizona, New Mexico, New Hampshire, Maine, Oregon, and Nevada.
This chart doesn't say to me that the Democrats need a Southerner. It says that they can win decisively if they can find someone who'll play well in the industrial midwest, who can pick up Maine and New Hampshire, and win Florida. Dean could do all those things, I think -- though it does make you wonder whether a Dean/Graham ticket makes more sense than the Dean/Clark ticket I've been fantasizing about since this summer, given the importance of Florida.
It's easy for mainstream Democrats to dismiss the fact that Dean has energized the "democratic wing of the democratic party", but I think that force shouldn't be underestimated. For as long as I can remember, the Republicans have had far more unity between the centrist and their ultra-conservative wings: Bush has passionate supporters at both ends of the party, as did Reagan. (The only Republican president who didn't have the far right's adoration, Bush Sr., didn't get re-elected.) But the reverse isn't true on the Left: the ultra-liberals and progressives were mostly disgusted by Clinton's DLC-style centrism and his welfare reform bills; they were Nader supporters or they believed that all mainstream politicians were beyond the pale. Partially because Bush has been so appalling, and partially because Dean is speaking at least in the tone of their language, if not the substance, that left-wing group finally has a candidate they can whole-heartedly embrace. Assuming that Dean can play his John McCain straight-talking maverick act to the midwest next year, I'm not at all sure that having such a passionate base is a liability, even if they are to the left of the rest of the country. In fact, I'd wager it's a strength.