My son lives in Wisconsin. After college he got a computer job in Madison. The man has done amazing things with very angry opposition. He survived a recall election and was handily reelected. Once while visiting there a few years ago, my son took me on a tour of the state capitol. As we walked out of the building, we got caught in an organized crowd that was shouting, "recall Walker." It took us one block or so to break free of the crowd.
Huckabee IMO is just another consummate establishment candidate like Romney or Mitch McConnell. If nominated the Republicans will lose. Walker from what I have seen is a refreshing change. There are several other candidates out there like Paul, Cruz, Rubio, and Carson. I would vote for any of them. In fact, think about a Walker Carson ticket. The only way the Democrats are going to win next year is or Republicans to nominate the typical liberal to moderate RINO like they pretty much have since Reagan left office.