I wouldn't overreact to Michigan. Santorum came within three points of the "frontrunner" in his homestate. Pretty disappointing to Romney.
Santorum looks very good here in Ohio, he has my vote and my fathers who told me the other day, "He prefers Santorum to Romney". He'll take Ohio, quite possibly Washington before then and other Super Tuesday states in the primaries we will see both of them compete in next week. I wouldn't worry at all.
But it is odd, every fellow Republican I talk to wants Santorum, but Romney still has support. From where, I don't know.
Considering Santorum had a 10% lead in the polls last week to lose by 3% suggests Romney's saturation bombing and his ridiculous comments about education, women and JFK... didn't help.
Going into ST, Romney has the expectations favouring him... otherwise known as, he's not expected to dominate. So Romney can easily spin any wins outside of MA, VA, VT and maybe ID as a huge win against the odds.
Poll
