South Carolinians like their politics red meat - which Trump can supply.
Iowans like their politics “nice” and “orderly” - which Trump doesn’t supply.
Alpha males do well here.. remember we voted for tough talking media hating Newt Gingrich over Romney which shocked everybody... Trump has been well ahead here for many months because of his tough stance on Immigration (we are getting overwhelmed down here) and rebuilding the military,, big military and retired military.. and I can’t see a Cruz or Rubio coming in and changing people’s minds enough to take it from him.. unless Trump has a huge faux pas between now and primary day I’d be shocked if he didn’t win here