I like him a lot because:
-He has consistently articulated since Iraq starting making the news regularly again last year a coherent and realistic critique of the war and the Bush Admin's policy.
-But he hasn't just been saying "Bush is bad." Or "war is bad." Clark has clearly and intelligently articulated why he thinks war was unnecesary AND presented a realistic, multilateral alternative that would be better for both America and the world community, in both terms of both morality and law.
-He is a very clear speaker who is able to communicate complex positions in terms normal people can understand, but without dumbing down his message. He's quick on his feet and does very well in interviews. He doesn't mince words and he doesn't come across as whiny or negative.
-He takes a long-term view of the environment, the economy, and the constitution. He's a solid progressive who can articulate his positions in terms that make them seem reasonable to moderate conservatives. So even though he's not officially a Dem, that's the only party right now he'd consider running for. Most Clark supporters agree that his unwillingness to say he's a Dem is partially a smart ploy and partially sincere. It's true that he's spent most of his life in a non-partisan public service position, so he really has never been a member of a party. But holding off declaring as long as possible is a pretty smart way to attract independents and moderate GOPers and not get labelled by the SCLM. And it makes it easier for him to keep getting media gigs as a "non-political" military commentator (although those are getting harder, since people always ask him if he's decided to run even if it's totally unrelated to the topic).
-He's from the south, he's telegenic, has great academic, military, and business credentials. He has a moderate position on guns, no political record, and a background as a general, so it's very hard to paint him as a "librul radical." People know him from his stint as CNN war analyst. And of course can speak to security issues with a great deal of credibility. All of this gives him a prima facie great profile in terms of electability.
-Clinton likes him and thinks he'd make a good prez. A good number of traditional lefty Dems are among his supporters. He has a burgeoning Internet draft movement that's generating a lot of buzz and some money, and he's done nothing to promote it. So between the Big Dog and grassroots supporters, he has a lot of support waiting for him.
And he is no Ross Perot.
Everyone around him, including his son, have said that if he runs, he will only run as a Democrat. He will NOT run as a Republican, an Independent, or for a third party. This is consistent with his pragmatism and his great dislike of Bush's policies.
Why hasn't he declared his affiliation as a Democrat? It's because (1) He really has spent all of his life except for the past 3 years as a non-partisan public servant; and (2) It's good strategic sense. His comparative advantage, his schtick, if you will, if his ability to appeal to independents and crossover voters. He sensibly wants to maximize this and to give the SCLM as little of a chance to stick the liberal/partisan label on his as possible. As long as he isn't "officially" a Democrat, he gets to lob bombs at the Republicans (as he has with great skill over the past few months) without being immediately dismissed by the media as "just a partisan Democrat."
If you're really curious, you'll start at this great
http://www.esquire.com/features/articles/2003/030801_mfe_clark_1.html">Esquire profile and this
http://wesleyclark.blogspot.com/">blog.