Rick Santorum is surging in Iowa even later than Ron Paul. Newt Gingrich is fading and is probably going to concentrate on South Carolina and then Florida. Mitt Romney is near the lead. To be honest I'm not sure who is going to win but I'm confident in predicting this; if Romney wins Iowa, the primary contest is over.
Romney hasn't worked too hard in Iowa compared to New Hampshire and if he wins Iowa, he will come out of the gate with back to back wins. That spells big trouble for the other candidates and speaks volumes for his ground game and/or negative ads against Gingrich.
It's late, I just got home from visiting relatives and that's all I've got right now.