Although McCain needs some executive (Governor) experience on the ticket, I don't seen him Choosing Huckabee.
For one - the thought of Huck becoming POTUS if McCain explodes during his tenure would scare even the right wing.
Plus, his brand of Evangelical prophecy is risky given McCain's recent pastor problems, and all the tape that surely exists from Huck's past.
I'd look for a less flamboyant, center-right governor - preferably a woman ;-)
Huck will do fine in media, which is where I suspect he's feeling his next calling anyway.
I truly like the guy, but God help us if he ever gets close to the reigns of power.

Given the declining number of voters who identify themselves as Republicans, McCain has a difficult decision to make. His choice depends entirely on which group of voters he views as more important to winning in November; religious conservatives or independents.

If McCain thinks Christian conservatives are more important, he’ll go for a very conservative running mate (I would have said Huckabee until I read Postman’s article) with confirmed conservative Christian credentials (how’s that for alliteration?). The problem with that is that by moving further to the right, McCain runs the risk of offending the independent voters he needs to win in November.

If McCain thinks the independents are more important (or that the Christian conservatives are likely to defect and vote for the Libertarian candidate), then he’ll go for a moderate, and maybe even Lieberman, trying to run from the center. But without the conservative Christians, that will be VERY difficult.

Either way, McCain will have a difficult struggle.

I think McCain spoke his personal truth when he called Christian fundementalists purveyors of intolerance.
He's flipped on that, then got burned with Haggee and Parsley (whatever their names are).
I just can't see him bringing-on a religious wacko like Huckabee. Better someone more centrist who has a strong commitment to conservative social values but doesn't bring "religion" into the picture as much.

Way too many negatives.

McCain needs some geographic diversity. Some New England juice, as it were.