The Jewish Week talks up how the Jewish vote would break down in a potential Obama/Huckabee 2012 match-up. Basically, their conclusion is that Huckabee's far-right views on Israel could energize the "single-issue" pro-Israel Jewish right, but his far-right, well, everything else, would similarly galvanize the broader Jewish community against him. The result would be a wash (which is to say, the normal Democratic domination), but perhaps more money flowing into GOP coffers than normal.
Can I point out the inconvenient fact that Huckabee isn't actually pro-Israel in any meaningful sense of the word? I get that there are some more repulsive members of my community for whom pro-Israelness is measured by how much utter disdain and contempt one can express towards any Palestinian desire or ambition. Nonetheless, if there is one lodestone of what it means to be "pro-Israel" in the modern world, it is opposition to a single-state solution -- that is, a unified state "from the river to the sea". That's Hamas' goal, and the resultant state would very soon have a Jewish minority and would have to cease existence as a Jewish state. Mike Huckabee endorses this position, possibly alone amongst presidential contenders (he's the only one I know of, anyway). That he may do this out of abject ignorance is no excuse -- it just goes to show how disconnected the Governor is from actual Jews who actually care about Israel and know how disastrous his positions would be for the stability and well-being of the state.
The only single-issue Israel voters who should be attracted to Huckabee are those whose single-issue is seeing Israel obliterated. That's the Huckabee plank.