Immediately clear is that Cruz is quite ideologically in-line with Republican voters in these four states. In fact, his estimated ideological score is to the left of (i.e., more liberal than) the median Republican in Iowa, South Carolina and Florida.
Instead, Bush is the candidate who appears to be the most ideologically out of step with Republican primary electorates in these four states. His score places him to the left of at least 70 percent of Republican voters in every state.
Which is why the RNC will try to engineer his nomination. The last two elections they have managed to nominate the least liked candidate. Whatever it takes to keep us from electing anyone who will stop the invasion.