Romney needs someone who is an experienced campaigner, who won’t make mistakes that hurt the campaign. The presidential campaign in the fall is not a good time or place to road test a candidate.
Running mates don’t usually help you win an election, but they can help you lose one.
Romney needs to avoid McCain’s mistake of picking a running mate who is more interesting and attracts more attention that he does.
Huckabee fits the bill perfectly. He not a guy to scare anyone, he’s run the presidential gauntlet and been fully vetted, and while a pleasant and interesting man, he is a familiar enough figure on the national scene not to outshine Mitt Romney with novelty.
Several others on the shortlist also satisfy these minimal requirements.
But Huckabee would do something else for Romney — something I don’t think any other person can do: shore up the evangelical base of the party and ignite genuine enthusiasm for getting Romney/Huckabee to the White House.