Okay, here are my predictions;
Romney;
Massachusetts, Vermont, Virginia, Idaho, Ohio
Gingrich;
Georgia
Santorum;
Oklahoma, Tennessee
Paul;
North Dakota
Idaho will have surprisingly strong Paul support, but not enough to turn it in his favor. Ohio will be very close between Romney and Santorum, with Romney getting a slight edge in the popular vote, while getting significantly more delegates due to Santorum not filling out all of the proper paperwork (even if Santorum were to win Ohio in a landslide, he's literally ineligible to win at least a quarter of the state's delegates because of a clerical error).
As for Alaska, I have absolutely no idea. It will be close between Romney and Paul. Santorum will do better than expected, but will be running for second there rather than first.
No one will drop out after today. All of the candidates will declare that they did better than expected and attempt to spin the results to their advantage. We're nowhere near the end of this thing.