Some thoughts from Rich Lowry on the Huckabee strategy here. An excerpt:

He has thrived on exactly what was in theory going to boost Fred—superior communications skills that have shined in the debates and in interviews; good gut political instinct; Southern charm and an inherit likeability; a very grounded sense of authenticity. Plus, the grass roots enthusiasm of social conservatives. 

Lowry’s thoughts about Huckabee’s interesting “Fair Tax” proposal here.