Gov. Huckabee isn’t my first choice, but, sometimes, losing a presidential nomination helps someone win the nomination (at least), later. That happened to Mitt Romney, John McCain, Bob Dole, George H.W. Bush, and Ronald Reagan.
Also, those other guys were really working hard for the nomination between campaigns and were ahead coming out of the starting gate. That's not the case with Huck. He's closer to the middle of the field.