Huckabee's big gov't sins are numerous and well documented. In a GOP that is now largely about limiting government Huckabee will have a hell of a hard time winning states outside the bible belt.
Since when did Republicans care about "big gov't sins"? The majority of them don't. Mitt Romney, John McCain, Rick Santorum, and the plethora of other Republican candidates have had those exact issues, and worse. Yet, they fall behind them just fine.
Newt Gingrich, divorced how many times? Won what "Bible belt" state? South Carolina?
If Rand can't win in Iowa or the "Bible belt", where will he be able to win? New Jersey against Chris Christie?