I believe Fox has called Alabama for Huckabee.

UPDATE: Other networks have not. But I direct you to Fox:

McCain’s opponents seemed to benefit from a home town advantage. Former Massachusetts Gov. Mitt Romney won Massachusetts, and former Arkansas Gov. Mike Huckabee won Arkansas Tuesday. Huckabee also won Alabama with the help of evangelical voters, after taking a victory in the West Virginia state GOP convention earlier in the day, proving that he’s more than just a spoiler for Romney, as the former Massachusetts governor had suggested.